51-050.005

Series Series 51 Versatile. Attractive and compact. https://eao.com/ 51 51 Information about the Series Key advantages Mounting cut-outs § Compact construction § Various configuration options § Reliable and proven § Timeless and modern design § Raised or flush mounting § Low back panel depth (Stop Switch) § Ø 16.2 mm § Ø 22.3 mm § 21.2 mm x 21.2 § 21.2 mm x 27.2 Typical application areas § Soldering terminal § Plug-in terminal § Soldering/plug-in terminal § PCB (with PCB plug-in base) § Food and beverages § Special vehicles § Buildings services and § Public transportation § Medical engineering § Pushbutton § Illuminated pushbutton § Mushroom-head pushbutton § Selector switch § Keylock switch § Indicator § Stop switch Lens Material § Aluminium § Plastic Markings § Engraving § Laser marking § Hot stamping § Film insert/marking § Pad printing § Screen print plate Approvals § Flush § Raised IP front protection § IP65 Raitings § 42 VAC (100 mA) § 250 VAC (5 A) 572 Terminal automation Functions Design mm mm ​ § CB (IEC 61058) § CSA § CQC § ENEC (EN 61058) § DNV GL (vormals Germanischer § UL Lloyd) Conformities § CE § 2014/30/EU § 2014/35/EU § 2011/65/EU § 2006/42/EU (EMC) (LVD) (RoHS) (MD) eao.com § 05/2020 Index 51 Flush design Pushbutton round 574 Illuminated pushbutton square 577 Illuminated pushbutton rectangular 580 Illuminated pushbutton round 583 Selector switch 2 positions square 586 Selector switch 2 positions round 589 Keylock switch 2 positions square 592 Keylock switch 2 positions rectangular 595 Keylock switch 2 positions round 598 Keylock switch 3 positions square 601 Keylock switch 3 positions rectangular 603 Keylock switch 3 positions round 605 Indicator square 607 Indicator rectangular 609 Indicator round 611 Raised design Illuminated pushbutton square 613 Illuminated pushbutton rectangular 616 Illuminated pushbutton round 619 Mushroom-head pushbutton 622 Selector switch 2 positions, round 624 Selector switch 3 positions, round 628 Keylock switch 2 positions square 630 Keylock switch 2 positions rectangular 633 Keylock switch 2 positions round 636 Keylock switch 3 positions square 639 Keylock switch 3 positions rectangular 641 Keylock switch 3 positions round 643 Indicator square 645 Indicator rectangular 647 Indicator round 649 Stop switch 651 Components 653 Accessories 662 Technical data 669 Marking 674 Application guidelines 675 01 02 03 04 09 14 17 18 19 22 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 573 51 Flush design 01 Pushbutton round, IP65 Equipment consisting of (schematic overview) 1.5 ... 4 02 B 03 L C 2 Product can differ from the current configuration. Actuator 41 36.5 ... 59 3 Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm 14 Page 653 A 04 09 Lens 44 Front bezel set Page 658 Fixing nut 17 NJO NJO 18 19 Each Part Number listed below includes all the black components shown in the 3D-drawing. To obtain a complete unit, please select the red components from the pages shown.  ±
 22 Mounting cut-outs [mm] 31 41 45 51 Actuator, Front dimension Ø 25 mm Switching action Contacts Terminal Switching system Part No. Momentary 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-151.022F 247 27 1 NC / 1 NO Soldering terminal Snap-action switching element 51-151.0252F 247 27 2 NC / 2 NO Soldering terminal Snap-action switching element 51-152.0252F 251 27 3 NC / 3 NO Soldering terminal Snap-action switching element 51-153.0252F 253 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-154.0252F 255 27 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-281.022F 250 27 1 NC / 1 NO Soldering terminal Snap-action switching element 51-281.0252F 250 27 2 NC / 2 NO Soldering terminal Snap-action switching element 51-282.0252F 252 27 3 NC / 3 NO Soldering terminal Snap-action switching element 51-283.0252F 254 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-284.0252F 256 27 2 NO Universal terminal Low-level element 51-451.036F 245 27 2 NC Universal terminal Low-level element 51-452.036F 243 27 1 NC / 1 NO Universal terminal Low-level element 51-453.036F 239 27 1 NO Universal terminal Low-level element 51-455.036F 241 27 1 NC Universal terminal Low-level element 51-456.036F 237 27 2 NO Universal terminal Low-level element 51-481.036F 246 27 2 NC Universal terminal Low-level element 51-482.036F 244 27 1 NC / 1 NO Universal terminal Low-level element 51-483.036F 240 27 1 NO Universal terminal Low-level element 51-485.036F 242 27 1 NC Universal terminal Low-level element 51-486.036F 238 27 56 Maintained 57 61 Momentary 70 71 Maintained 82 84 Component Layout Wiring diagram Contacts: NC = Normally closed, NO = Normally open 92 96 574 eao.com § 05/2020 Flush design 51 Wiring diagrams 01 1 1 1 3 1 3 1 1 1 3 2 2 2 4 2 4 2 2 2 4 02 03 04 Wiring diagram 237 1 Wiring diagram 238 3 1 Wiring diagram 239 3 1 Wiring diagram 240 3 1 Wiring diagram 241 3 1 I Wiring diagram 242 3 1 I Wiring diagram 243 3 1 I 09 3 II 14 2 4 Wiring diagram 244 1 3 4 2 Wiring diagram 245 1 I 4 2 3 2 Wiring diagram 246 1 II 3 1 I 2 4 Wiring diagram 247 3 1 II 2 4 Wiring diagram 250 3 1 III 3 2 17 4 18 Wiring diagram 251 1 I 4 3 1 II 3 19 III 22 2 4 2 2 4 4 2 4 2 2 4 4 2 4 2 4 31 Wiring diagram 252 1 3 Wiring diagram 253 1 I 3 1 II 3 1 III 3 Wiring diagram 254 1 IV 3 1 I 3 1 II 3 1 III 41 3 IV 45 2 4 Wiring diagram 255 2 4 2 4 2 4 2 4 2 4 2 4 2 4 51 Wiring diagram 256 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 575 51 Flush design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 EAO Downloads. www.eao.com/downloads 56 EAO creates possibilities. Since 1947. 57 61 70 71 On our website you can download technical data, assembly instructions, catalogs, brochures and much more. 82 84 92 www.eao.com 96 576 ​ eao.com § 05/2020 Flush design 51 Illuminated pushbutton square, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 4 02 B Lens Page 653 44 L LED Page 660 03 A C 2 04 41 36.5 ... 59 3 09 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Front bezel set Product can differ from the current configuration. 14 Page 658 17 NJO 3
NBY NJO 18  
 Fixing nut Each Part Number listed below includes all the black components shown in the 3D-drawing. 19  
 To obtain a complete unit, please select the red components from the pages shown. 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension 24 mm x 24 mm Component Layout Switching action Contacts Terminal Switching system Part No. Wiring diagram Momentary 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-151.022F 18 27 1 NC / 1 NO Soldering terminal Snap-action switching element 51-151.0252F 18 27 2 NC / 2 NO Soldering terminal Snap-action switching element 51-152.0252F 24 27 3 NC / 3 NO Soldering terminal Snap-action switching element 51-153.0252F 26 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-154.0252F 28 27 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-281.022F 19 27 1 NC / 1 NO Soldering terminal Snap-action switching element 51-281.0252F 19 27 2 NC / 2 NO Soldering terminal Snap-action switching element 51-282.0252F 25 27 3 NC / 3 NO Soldering terminal Snap-action switching element 51-283.0252F 27 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-284.0252F 29 27 2 NO Universal terminal Low-level element 51-451.036F 11 27 2 NC Universal terminal Low-level element 51-452.036F 30 27 1 NC / 1 NO Universal terminal Low-level element 51-453.036F 7 27 1 NO Universal terminal Low-level element 51-455.036F 9 27 1 NC Universal terminal Low-level element 51-456.036F 11 27 2 NO Universal terminal Low-level element 51-481.036F 12 27 2 NC Universal terminal Low-level element 51-482.036F 31 27 1 NC / 1 NO Universal terminal Low-level element 51-483.036F 8 27 1 NO Universal terminal Low-level element 51-485.036F 10 27 1 NC Universal terminal Low-level element 51-486.036F 6 27 Maintained Momentary Maintained 45 51 56 57 61 70 71 82 84 Contacts: NC = Normally closed, NO = Normally open 92 96 05/2020 § eao.com 577 51 Flush design 01 Wiring diagrams 02 1 b+ 1 3 b+ 1 3 b+ 1 b+ 1 b+ 1 3 b+ 2 a- 2 4 a- 2 4 a- 2 a- 2 a- 2 4 a- 03 04 Wiring diagram 6 09 Wiring diagram 7 1 3 b+ Wiring diagram 8 1 3 b+ Wiring diagram 9 1 3 I x2+ Wiring diagram 10 1 I 3 1 3 x2+ 4 x1- Wiring diagram 11 II I 14 17 18 4 2 2 a- Wiring diagram 12 1 19 4 2 a- Wiring diagram 18 3 1 I 3 1 II 3 4 2 x1- Wiring diagram 19 x2+ 1 III 3 2 4 Wiring diagram 24 1 3 I 1 II 3 x2+ 4 x1- III 22 2 2 4 4 2 4 2 x1- 2 4 2 4 31 Wiring diagram 26 41 1 Wiring diagram 27 3 1 I 3 1 II 3 1 III 3 x2+ 1 3 IV 1 I 3 1 II 3 1 III 3 x2+ 4 x1- IV 45 2 51 56 4 2 2 4 Wiring diagram 28 1 57 3 4 2 x1- 2 4 Wiring diagram 30 2 4 4 2 4 2 Wiring diagram 29 b+ 1 3 b+ 1 3 1 I 61 70 2 4 a- 2 4 Wiring diagram 31 a- 2 3 II 4 2 4 Wiring diagram 252 71 82 84 92 96 578 ​ eao.com § 05/2020 Flush design 51 Component layouts 01 02 D 2 a b 2 4 a 04 3 1 3 1 10.16 b 2 4 1 3 a b 03 7.62 b 4 4 2 C 1 3 C a b 2 4 1 3 a b 4 2 C 1 3 C a b 2 4 4 2 a b 1 3 B a A 1 3 Ø1.0 (6x) 09 14 10.16 18 mm x 24 mm 5.08 18 mm x 18 mm 5.08 Ø18 mm 17 Ø1.0 (6x) 7.62 18 Component layout 27 19 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 22 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 579 51 Flush design 01 Illuminated pushbutton rectangular, IP65 Equipment consisting of (schematic overview) 1.5 ... 4 02 B 44 03 L 04 09 Page 653 LED Page 660 A C 2 Lens 41 36.5 ... 59 3 Actuator Product can differ from the current configuration. Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm 14 Front bezel set 17 Page 658 
NJO  
 NJO 3
NBY 18 19  
 22 Fixing nut Each Part Number listed below includes all the black components shown in the 3D-drawing. To obtain a complete unit, please select the red components from the pages shown. Mounting cut-outs [mm] 31 41 45 51 Actuator, Front dimension 30 mm x 24 mm Switching action Contacts Terminal Switching system Part No. Momentary 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-151.022F 18 27 1 NC / 1 NO Soldering terminal Snap-action switching element 51-151.0252F 18 27 2 NC / 2 NO Soldering terminal Snap-action switching element 51-152.0252F 24 27 3 NC / 3 NO Soldering terminal Snap-action switching element 51-153.0252F 26 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-154.0252F 28 27 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-281.022F 19 27 1 NC / 1 NO Soldering terminal Snap-action switching element 51-281.0252F 19 27 2 NC / 2 NO Soldering terminal Snap-action switching element 51-282.0252F 25 27 3 NC / 3 NO Soldering terminal Snap-action switching element 51-283.0252F 27 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-284.0252F 29 27 2 NO Universal terminal Low-level element 51-451.036F 11 27 2 NC Universal terminal Low-level element 51-452.036F 30 27 1 NC / 1 NO Universal terminal Low-level element 51-453.036F 7 27 1 NO Universal terminal Low-level element 51-455.036F 9 27 1 NC Universal terminal Low-level element 51-456.036F 11 27 2 NO Universal terminal Low-level element 51-481.036F 12 27 2 NC Universal terminal Low-level element 51-482.036F 31 27 1 NC / 1 NO Universal terminal Low-level element 51-483.036F 8 27 1 NO Universal terminal Low-level element 51-485.036F 10 27 1 NC Universal terminal Low-level element 51-486.036F 6 27 56 Maintained 57 61 Momentary 70 71 Maintained 82 84 Component Layout Wiring diagram Contacts: NC = Normally closed, NO = Normally open 92 96 580 eao.com § 05/2020 Flush design 51 Wiring diagrams 01 1 b+ 1 3 b+ 1 3 b+ 1 b+ 1 b+ 1 3 b+ 2 a- 2 4 a- 2 4 a- 2 a- 2 a- 2 4 a- 02 03 04 Wiring diagram 6 1 Wiring diagram 7 3 b+ Wiring diagram 8 1 3 b+ Wiring diagram 9 1 3 I x2+ Wiring diagram 10 1 3 1 I I 3 Wiring diagram 11 09 x2+ II 14 4 2 2 a- Wiring diagram 12 1 4 2 a- Wiring diagram 18 3 1 I 3 1 II 3 4 2 x1- Wiring diagram 19 x2+ 1 III 3 2 4 4 17 x1- 18 Wiring diagram 24 1 3 I 1 II 3 x2+ 4 x1- 19 III 22 2 2 4 4 2 4 2 x1- 2 4 2 4 31 Wiring diagram 26 1 Wiring diagram 27 3 1 I 3 1 II 3 1 III 3 x2+ 1 3 IV 1 I 3 1 II 3 1 III 3 41 x2+ IV 45 2 2 4 4 2 2 4 Wiring diagram 28 1 3 4 2 x1- 4 Wiring diagram 30 4 2 4 2 4 x1- 51 Wiring diagram 29 b+ 1 3 b+ 1 3 1 I 2 2 4 a- 2 4 Wiring diagram 31 a- 2 56 3 57 II 4 2 61 4 70 Wiring diagram 252 71 82 84 92 96 05/2020 § eao.com ​ 581 51 Flush design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 56 57 61 70 71 82 84 92 96 582 ​ eao.com § 05/2020 Flush design 51 Illuminated pushbutton round, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 4 02 B Lens Page 653 LED Page 660 44 L 03 A C 2 04 41 36.5 ... 59 3 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Front bezel set 09 Product can differ from the current configuration. 14 Page 658 17 NJO Page 659 18 NJO Anti-twist ring Fixing nut 19  Each Part Number listed below includes all the black components shown in the 3D-drawing. ±
 22 To obtain a complete unit, please select the red components from the pages shown. Mounting cut-outs [mm] 31 41 Actuator, Front dimension Ø 25 mm Component Layout Switching action Contacts Terminal Switching system Part No. Wiring diagram Momentary 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-151.022F 18 27 1 NC / 1 NO Soldering terminal Snap-action switching element 51-151.0252F 18 27 2 NC / 2 NO Soldering terminal Snap-action switching element 51-152.0252F 24 27 3 NC / 3 NO Soldering terminal Snap-action switching element 51-153.0252F 26 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-154.0252F 28 27 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-281.022F 19 27 1 NC / 1 NO Soldering terminal Snap-action switching element 51-281.0252F 19 27 2 NC / 2 NO Soldering terminal Snap-action switching element 51-282.0252F 25 27 3 NC / 3 NO Soldering terminal Snap-action switching element 51-283.0252F 27 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-284.0252F 29 27 2 NO Universal terminal Low-level element 51-451.036F 11 27 2 NC Universal terminal Low-level element 51-452.036F 30 27 1 NC / 1 NO Universal terminal Low-level element 51-453.036F 7 27 1 NO Universal terminal Low-level element 51-455.036F 9 27 1 NC Universal terminal Low-level element 51-456.036F 11 27 2 NO Universal terminal Low-level element 51-481.036F 12 27 2 NC Universal terminal Low-level element 51-482.036F 31 27 1 NC / 1 NO Universal terminal Low-level element 51-483.036F 8 27 1 NO Universal terminal Low-level element 51-485.036F 10 27 1 NC Universal terminal Low-level element 51-486.036F 6 27 Maintained Momentary Maintained 45 51 56 57 61 70 71 82 84 Contacts: NC = Normally closed, NO = Normally open 92 96 05/2020 § eao.com 583 51 Flush design 01 Wiring diagrams 02 1 b+ 1 3 b+ 1 3 b+ 1 b+ 1 b+ 1 3 b+ 2 a- 2 4 a- 2 4 a- 2 a- 2 a- 2 4 a- 03 04 Wiring diagram 6 09 Wiring diagram 7 1 3 b+ Wiring diagram 8 1 3 b+ Wiring diagram 9 1 3 I x2+ Wiring diagram 10 1 I 3 1 3 x2+ 4 x1- Wiring diagram 11 II I 14 17 18 4 2 2 a- Wiring diagram 12 1 19 4 2 a- Wiring diagram 18 3 1 I 3 1 II 3 4 2 x1- Wiring diagram 19 x2+ 1 III 3 2 4 Wiring diagram 24 1 3 I 1 II 3 x2+ 4 x1- III 22 2 2 4 4 2 4 2 x1- 2 4 2 4 31 Wiring diagram 26 41 1 Wiring diagram 27 3 1 I 3 1 II 3 1 III 3 x2+ 1 3 IV 1 I 3 1 II 3 1 III 3 x2+ 4 x1- IV 45 2 51 56 4 2 2 4 Wiring diagram 28 1 57 3 4 2 x1- 2 4 Wiring diagram 30 2 4 4 2 4 2 Wiring diagram 29 b+ 1 3 b+ 1 3 1 I 61 70 2 4 a- 2 4 Wiring diagram 31 a- 2 3 II 4 2 4 Wiring diagram 252 71 82 84 92 96 584 ​ eao.com § 05/2020 Flush design 51 Component layouts 01 02 D 2 a b 2 4 a 04 3 1 3 1 10.16 b 2 4 1 3 a b 03 7.62 b 4 4 2 C 1 3 C a b 2 4 1 3 a b 4 2 C 1 3 C a b 2 4 4 2 a b 1 3 B a A 1 3 Ø1.0 (6x) 09 14 10.16 18 mm x 24 mm 5.08 18 mm x 18 mm 5.08 Ø18 mm 17 Ø1.0 (6x) 7.62 18 Component layout 27 19 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 22 31 41 45 51 Follow us. We are on LinkedIn! 56 EAO creates possibilities. Since 1947. 57 61 70 71 Come take a look at our LinkedIn profi le today! Be sure to give us a follow so that you can fully interact with us. 82 https://www.linkedin.com/company/eao/ 84 92 www.eao.com 05/2020 § eao.com 96 ​ 585 51 Flush design 01 Selector switch 2 positions square, IP65 Equipment consisting of (schematic overview) 1.5 ... 4 02 B 48 03 L 04 LED Page 660 2 Product can differ from the current configuration. 14 17 Page 657 C 9.5 09 Lever A 41 … 63.5 45 3 Actuator Dimensions [mm] A = Solder terminal B = Solder terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm General information Front bezel set NJO • Illuminative Page 658 Fixing nut  
 NJO 3
NBY 18 19 Each Part Number listed below includes all the black components shown in the 3D-drawing.  
 To obtain a complete unit, please select the red components from the pages shown. 22 Mounting cut-outs [mm] 31 0 41 I 0 I 45 Actuator, Front dimension 24 mm x 24 mm 51 56 Switching action Terminal Switching system Contacts Switching angle Part No. Rest - Momentary Plug-in terminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.022 272 Soldering terminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.0252 271 Soldering terminal Snap-action switching element 2 NC / 2 NO 42° right 52-132.0252 273 Soldering terminal Snap-action switching element 3 NC / 3 NO 42° right 52-133.0252 274 Soldering terminal Snap-action switching element 4 NC / 4 NO 42° right 52-134.0252 275 Plug-in terminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.022 277 Soldering terminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.0252 276 Soldering terminal Snap-action switching element 2 NC / 2 NO 90° right 52-272.0252 278 Soldering terminal Snap-action switching element 3 NC / 3 NO 90° right 52-273.0252 279 Soldering terminal Snap-action switching element 4 NC / 4 NO 90° right 52-274.0252 280 Universal terminal Low-level element 1 NC / 1 NO 42° right 52-433.036 264 27 Universal terminal Low-level element 1 NO 42° right 52-435.036 265 27 Universal terminal Low-level element 1 NC 42° right 52-436.036 263 27 Universal terminal Low-level element 2 NO 90° right 52-471.036 270 27 Universal terminal Low-level element 2 NC 90° right 52-472.036 269 27 Universal terminal Low-level element 1 NC / 1 NO 90° right 52-473.036 267 27 Universal terminal Low-level element 1 NO 90° right 52-475.036 268 27 Universal terminal Low-level element 1 NC 90° right 52-476.036 266 27 57 Rest - Maintained 61 70 Component Layout Wiring diagram Rest - Momentary 71 Rest - Maintained 82 84 Contacts: NC = Normally closed, NO = Normally open 92 96 586 eao.com § 05/2020 Flush design 51 Wiring diagrams 01 1 b+ 1 3 b+ 1 b+ 1 b+ 2 a- 2 4 a- 2 a- 2 a- 02 03 04 Wiring diagram 263 Wiring diagram 264 1 3 Wiring diagram 265 b+ 1 Wiring diagram 266 b+ 1 3 09 b+ 14 4 2 a- 2 Wiring diagram 267 Wiring diagram 268 1 3 2 a- 4 17 a- 18 Wiring diagram 269 b+ 1 3 x2+ 1 I 3 b+ 4 a- 19 I 22 4 2 2 a- 4 2 x1- 31 Wiring diagram 270 Wiring diagram 271 1 3 1 I 3 Wiring diagram 272 x2+ 1 II 3 1 I 3 1 II 3 41 x2+ III 45 2 2 4 4 2 x1- Wiring diagram 273 2 4 4 2 4 x1- 51 Wiring diagram 274 1 3 1 I 2 3 1 II 2 4 3 1 III 4 2 3 56 x2+ 1 IV 4 2 3 x2+ 4 x1- 57 I 4 2 x1- Wiring diagram 275 61 70 Wiring diagram 276 1 3 b+ 1 I 3 1 I 3 71 x2+ II 82 2 Wiring diagram 277 4 2 a- 4 2 4 x1- 84 Wiring diagram 278 92 96 05/2020 § eao.com ​ 587 51 Flush design 01 Wiring diagrams 1 02 3 1 I 3 1 II 3 x2+ 1 III 3 1 I 3 1 II 3 1 III 3 x2+ 4 x1- IV 03 2 2 4 4 2 4 2 x1- 2 4 4 2 4 2 04 Wiring diagram 279 Wiring diagram 280 09 Component layouts 17 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 b 4 2 a b 2 4 2 1 3 a b 1 3 C a b 2 4 C 4 2 1 3 a 1 3 41 b C a b 2 4 a C 4 2 B 1 3 31 b 22 a A 1 3 19 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 18 5.08 14 Ø1.0 (6x) 7.62 45 Component layout 27 51 56 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 57 61 70 71 82 84 92 96 588 ​ eao.com § 05/2020 Flush design 51 Selector switch 2 positions round, IP65 Equipment consisting of (schematic overview) 01 1.5 ... 4 02 B Lever 48 Page 657 L LED 03 A Page 660 04 C 2 9.5 Actuator Front bezel set 41 … 63.5 45 3 Dimensions [mm] A = Solder terminal B = Solder terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm 14 General information Page 658 NJO 17 • Illuminative 18 NJO Anti-twist ring 09 Product can differ from the current configuration. Page 659 Fixing nut 19  ±
 Each Part Number listed below includes all the black components shown in the 3D-drawing. To obtain a complete unit, please select the red components from the pages shown. 0 I 22 Mounting cut-outs [mm] 31 41 0 I 45 Actuator, Front dimension Ø 25 mm 51 Component Layout Switching action Terminal Switching system Contacts Switching angle Part No. Wiring diagram Rest - Momentary Plug-in terminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.022 272 Soldering terminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.0252 271 Soldering terminal Snap-action switching element 2 NC / 2 NO 42° right 52-132.0252 273 Soldering terminal Snap-action switching element 3 NC / 3 NO 42° right 52-133.0252 274 Soldering terminal Snap-action switching element 4 NC / 4 NO 42° right 52-134.0252 275 Plug-in terminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.022 277 Soldering terminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.0252 276 Soldering terminal Snap-action switching element 2 NC / 2 NO 90° right 52-272.0252 278 Soldering terminal Snap-action switching element 3 NC / 3 NO 90° right 52-273.0252 279 Soldering terminal Snap-action switching element 4 NC / 4 NO 90° right 52-274.0252 280 Universal terminal Low-level element 1 NC / 1 NO 42° right 52-433.036 264 27 Universal terminal Low-level element 1 NO 42° right 52-435.036 265 27 Universal terminal Low-level element 1 NC 42° right 52-436.036 263 27 Universal terminal Low-level element 2 NO 90° right 52-471.036 270 27 Universal terminal Low-level element 2 NC 90° right 52-472.036 269 27 Universal terminal Low-level element 1 NC / 1 NO 90° right 52-473.036 267 27 Universal terminal Low-level element 1 NO 90° right 52-475.036 268 27 Universal terminal Low-level element 1 NC 90° right 52-476.036 266 27 Rest - Maintained Rest - Momentary Rest - Maintained 56 57 61 70 71 82 84 92 Contacts: NC = Normally closed, NO = Normally open 96 05/2020 § eao.com 589 51 Flush design 01 Wiring diagrams 02 1 b+ 1 3 b+ 1 b+ 1 b+ 2 a- 2 4 a- 2 a- 2 a- 03 04 Wiring diagram 263 09 Wiring diagram 264 Wiring diagram 265 Wiring diagram 266 1 3 b+ 1 b+ 1 3 b+ 2 4 a- 2 a- 2 4 a- 14 17 18 Wiring diagram 267 Wiring diagram 268 1 19 3 Wiring diagram 269 b+ 1 3 x2+ 1 I 3 b+ 4 a- I 22 4 2 2 a- 4 2 x1- 31 Wiring diagram 270 41 Wiring diagram 271 1 3 1 I 3 Wiring diagram 272 x2+ 1 II 3 1 I 3 1 II 3 x2+ 4 x1- III 45 2 51 56 4 2 x1- Wiring diagram 273 3 1 I 61 2 3 1 II 2 4 3 1 III 4 2 4 2 3 x2+ 1 IV 4 2 3 x2+ 4 x1- I 4 2 x1- Wiring diagram 275 71 2 4 Wiring diagram 274 1 57 70 2 4 Wiring diagram 276 1 3 b+ 1 I 3 1 I 3 x2+ 4 x1- II 82 2 84 92 Wiring diagram 277 4 2 a- 4 2 Wiring diagram 278 96 590 ​ eao.com § 05/2020 Flush design 51 Wiring diagrams 01 1 3 1 I 3 1 II 3 x2+ 1 III 3 1 I 3 1 II 3 1 III 3 x2+ 4 x1- 02 IV 03 2 2 4 4 2 4 2 x1- 2 4 4 2 4 2 04 Wiring diagram 279 Wiring diagram 280 09 Component layouts 14 17 D 2 a b 2 4 a 19 3 1 3 1 10.16 b 2 4 18 7.62 b 4 4 2 1 3 a b 1 3 C a b 2 4 C 4 2 1 3 a b 1 3 C a b 2 4 C 4 2 a b 1 3 B a A 1 3 Ø1.0 (6x) 22 31 10.16 18 mm x 24 mm 5.08 18 mm x 18 mm 5.08 Ø18 mm 41 Ø1.0 (6x) 7.62 45 Component layout 27 51 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 591 51 Flush design 01 Keylock switch 2 positions square, IP65 Equipment consisting of (schematic overview) 1.5 ... 5 02 B 44.5 03 A Actuator C 04 3.5 35 … 57.5 41.5 3 27 09 Product can differ from the current configuration. 14 17 Dimensions [mm] A = Solder terminal B = Solder terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Front bezel set General information Fixing nut NJO • Standard lock: DOM 311 3
NBY NJO Each Part Number listed below includes all the black components shown in the 3D-drawing. To obtain a complete unit, please select the red components from the pages shown.  
 18 19 Page 658  
 22 Mounting cut-outs [mm] 31 0 41 56 0 I 45 51 I Actuator, Front dimension 24 mm x 24 mm Terminal Switching system Switching angle 1 NC / 1 NO Plug-in terminal Snap-action switching element 42° right 51-145.022DF 257 1 NC / 1 NO Soldering terminal Snap-action switching element 42° right 51-145.025D2F 257 2 NC / 2 NO Soldering terminal Snap-action switching element 42° right 51-146.025D2F 113 3 NC / 3 NO Soldering terminal Snap-action switching element 42° right 51-147.025D2F 114 4 NC / 4 NO Soldering terminal Snap-action switching element 42° right 51-148.025D2F 258 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-155.022DF 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-155.025D2F 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-156.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-157.025D2F 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-158.025D2F 116 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-255.022DF 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-255.025D2F 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-256.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-257.025D2F 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-258.025D2F 116 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-355.022DF 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-355.025D2F 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-356.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-357.025D2F 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-358.025D2F 116 2 NO Universal terminal Low-level element 90° right 51-441.036DF 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-442.036DF 111 27 61 Rest (a) - Maintained 71 82 Rest - Maintained (a) 84 92 96 27 Contacts Rest (a) - Momentary Rest (a) - Maintained (a) 70 Component Layout Switching action 57 Rest (a) - Maintained (a) Part No. Wiring diagram 27 27 27 Contacts: NC = Normally closed, NO = Normally open a = Key remove 592 eao.com § 05/2020 Flush design Switching action Rest (a) - Maintained Contacts Terminal Switching system Switching angle Wiring diagram Part No. 51 Component Layout 2 NO Universal terminal Low-level element 90° right 51-444.036DF 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-445.036DF 111 27 Rest - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-447.036DF 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-448.036DF 111 27 Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-457.036DF 109 27 1 NC / 1 NO Universal terminal Low-level element 42° right 51-458.036DF 110 27 01 02 03 04 Contacts: NC = Normally closed, NO = Normally open a = Key remove 09 Wiring diagrams 1 3 1 I 3 1 I 3 1 14 3 II 17 2 2 4 Wiring diagram 107 4 2 4 Wiring diagram 108 1 18 Wiring diagram 109 1 3 4 2 3 1 19 3 22 4 2 Wiring diagram 110 Wiring diagram 111 1 3 1 I 31 4 2 4 2 41 Wiring diagram 112 3 1 II 3 1 I 3 1 II 45 3 III 51 2 4 2 2 4 4 2 4 2 4 56 Wiring diagram 113 Wiring diagram 114 1 3 1 I 2 3 1 II 4 2 57 3 1 III 4 2 3 1 I 2 4 Wiring diagram 115 3 1 II 4 2 3 1 III 4 2 3 IV 4 2 61 70 4 71 Wiring diagram 116 1 3 1 I 3 1 I 3 1 II 3 1 III 82 3 IV 84 2 2 4 4 2 4 2 4 2 4 92 Wiring diagram 257 Wiring diagram 258 96 05/2020 § eao.com ​ 593 51 Flush design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 Green Touch. Offering sustainability. 56 EAO creates possibilities. Since 1947. 57 61 70 71 As a successful company with production sites around the world, EAO is actively committed to the effective implementation of a sustainable environmental policy. 82 We act responsibly. In our environmental focus, we set benchmarks for ourselves, our products and our customers. Throughout our entire value chain, we think and work in a way that is resource-efficient and environmentally-friendly. When selecting our components and raw materials, we ensure that we have partnerships in place with certified manufacturers and that we adhere to EC guidelines on hazardous materials (RoHS). 84 92 www.eao.com 96 594 ​ eao.com § 05/2020 Flush design 51 Keylock switch 2 positions rectangular, IP65 Equipment consisting of (schematic overview) 01 1.5 ... 5 02 B 44.5 03 A Actuator C 3.5 35 … 57.5 41.5 04 3 27 Front bezel set Page 658 Dimensions [mm] A = Solder terminal B = Solder terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm 09 Product can differ from the current configuration. 14 Fixing nut General information 
NJO Each Part Number listed below includes all the black components shown in the 3D-drawing. 17 • Standard lock: DOM 311 3
NBY NJO 18  
 To obtain a complete unit, please select the red components from the pages shown. 19  
 22 Mounting cut-outs [mm] 31 0 0 I 41 I 45 Actuator, Front dimension 30 mm x 24 mm Switching action Contacts Terminal Switching system Switching angle Part No. Wiring diagram Rest (a) - Maintained (a) 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-195.022DF 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-195.025D2F 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-196.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-197.025D2F 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-198.025D2F 116 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-295.022DF 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-295.025D2F 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-296.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-297.025D2F 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-298.025D2F 116 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-395.022DF 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-395.025D2F 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-396.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-397.025D2F 115 Rest (a) - Maintained Rest - Maintained (a) Component Layout 27 56 57 27 61 71 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-398.025D2F 116 1 NC / 1 NO Soldering terminal Snap-action switching element 42° right 51-495.022DF 257 27 Rest (a) - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-401.036DF 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-402.036DF 111 27 2 NO Universal terminal Low-level element 90° right 51-404.036DF 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-405.036DF 111 27 2 NO Universal terminal Low-level element 90° right 51-407.036DF 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-408.036DF 111 27 Rest - Maintained (a) 70 27 Rest (a) - Momentary Rest (a) - Maintained 82 84 92 Contacts: NC = Normally closed, NO = Normally open a = Key remove 05/2020 § eao.com 51 96 595 51 Flush design 01 Switching action Contacts Terminal Switching system Switching angle Part No. Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-427.036DF 109 27 1 NC / 1 NO Universal terminal Low-level element 42° right 51-428.036DF 116 27 1 NC / 1 NO Soldering terminal Snap-action switching element 42° right 51-495.025D2F 257 2 NC / 2 NO Soldering terminal Snap-action switching element 42° right 51-496.025D2F 113 3 NC / 3 NO Soldering terminal Snap-action switching element 42° right 51-497.025D2F 114 4 NC / 4 NO Soldering terminal Snap-action switching element 42° right 51-498.025D2F 258 02 03 04 09 Component Layout Wiring diagram Contacts: NC = Normally closed, NO = Normally open a = Key remove Wiring diagrams 14 1 3 1 I 3 1 I 3 1 3 4 2 4 II 17 2 18 19 2 4 Wiring diagram 107 4 2 Wiring diagram 108 1 3 Wiring diagram 109 1 3 1 22 31 41 3 1 I Wiring diagram 111 45 4 2 4 2 Wiring diagram 112 1 3 1 I 3 1 II 3 II 2 4 2 4 Wiring diagram 113 3 1 III 3 1 I 3 1 II 3 III 51 2 4 2 4 2 2 4 4 2 4 2 4 56 57 Wiring diagram 114 Wiring diagram 115 1 61 70 71 3 1 I 2 3 1 II 4 2 3 1 III 4 2 3 4 2 3 I 2 4 Wiring diagram 116 82 1 IV 4 Wiring diagram 257 1 3 1 I 3 1 II 3 1 III 3 IV 84 2 4 2 4 2 4 2 4 92 Wiring diagram 258 96 596 ​ eao.com § 05/2020 Flush design 51 Component layouts 01 02 D 2 a b 2 4 a 04 3 1 3 1 10.16 b 2 4 1 3 a b 03 7.62 b 4 4 2 C 1 3 C a b 2 4 1 3 a b 4 2 C 1 3 C a b 2 4 4 2 a b 1 3 B a A 1 3 Ø1.0 (6x) 09 14 10.16 18 mm x 24 mm 5.08 18 mm x 18 mm 5.08 Ø18 mm 17 Ø1.0 (6x) 7.62 18 Component layout 27 19 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 22 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 597 51 Flush design 01 Keylock switch 2 positions round, IP65 Equipment consisting of (schematic overview) 1.5 ... 5 02 B 44.5 03 A C 04 3.5 35 … 57.5 41.5 Actuator 3 27 09 Product can differ from the current configuration. 14 17 Dimensions [mm] A = Solder terminal B = Solder terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm General information NJO • Standard lock: DOM 311 Page 658 Anti-twist ring Page 659 Fixing nut NJO 18 Front bezel set Each Part Number listed below includes all the black components shown in the 3D-drawing. 19  To obtain a complete unit, please select the red components from the pages shown. ±
 22 Mounting cut-outs [mm] 31 0 0 41 45 51 I I Actuator, Front dimension Ø 25 mm Switching action Contacts Terminal Switching system Switching angle Part No. Rest (a) - Maintained (a) 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-135.022DF 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-135.025D2F 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-136.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-137.025D2F 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-138.025D2F 116 1 NC / 1 NO Plug-in terminal Snap-action switching element 42° right 51-141.022DF 257 1 NC / 1 NO Soldering terminal Snap-action switching element 42° right 51-141.025D2F 257 2 NC / 2 NO Soldering terminal Snap-action switching element 42° right 51-142.025D2F 113 3 NC / 3 NO Soldering terminal Snap-action switching element 42° right 51-143.025D2F 114 4 NC / 4 NO Soldering terminal Snap-action switching element 42° right 51-144.025D2F 258 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-235.022DF 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-236.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-237.025D2F 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-238.025D2F 116 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-335.022DF 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-335.025D2F 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-336.025D2F 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-337.025D2F 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-338.025D2F 116 2 NO Universal terminal Low-level element 90° right 51-411.036DF 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-412.036DF 111 27 2 NO Universal terminal Low-level element 90° right 51-414.036DF 112 27 56 57 Rest (a) - Momentary 61 70 Rest (a) - Maintained 71 82 Rest - Maintained (a) 84 Rest (a) - Maintained (a) 92 96 Component Layout Wiring diagram Rest (a) - Maintained Contacts: NC = Normally closed, NO = Normally open a = Key remove 598 eao.com § 05/2020 Flush design Switching action Contacts Terminal Switching system Switching angle Part No. Wiring diagram 51 Component Layout Rest (a) - Maintained 1 NC / 1 NO Universal terminal Low-level element 90° right 51-415.036DF 111 27 Rest - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-417.036DF 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-418.036DF 111 27 Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-437.036DF 109 27 1 NC / 1 NO Universal terminal Low-level element 42° right 51-438.036DF 116 27 01 02 03 Contacts: NC = Normally closed, NO = Normally open a = Key remove 04 Wiring diagrams 09 1 3 1 I 3 1 I 3 1 3 4 2 4 14 II 17 2 2 4 4 2 18 Wiring diagram 107 Wiring diagram 108 1 3 Wiring diagram 109 1 3 1 3 1 I 19 3 II 22 4 2 Wiring diagram 111 Wiring diagram 112 1 3 1 I 2 3 1 II 4 2 2 4 2 3 2 4 31 1 41 3 1 I 2 4 Wiring diagram 114 2 Wiring diagram 113 III 4 4 3 1 II 4 2 3 45 III 4 2 51 4 56 Wiring diagram 115 1 3 1 I 3 1 II 3 1 III 3 1 IV 57 3 I 61 2 4 2 4 2 4 2 2 4 Wiring diagram 116 4 70 Wiring diagram 257 1 3 1 I 2 3 1 II 4 2 3 1 III 4 2 71 3 IV 4 2 82 84 4 92 Wiring diagram 258 96 05/2020 § eao.com ​ 599 51 Flush design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 56 57 61 70 71 82 84 92 96 600 ​ eao.com § 05/2020 Flush design 51 Keylock switch 3 positions square, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 5 02 03 Actuator 3.5 04 50 27 Dimensions [mm] Front bezel set 09 Product can differ from the current configuration. Page 658 14 General information NJO Fixing nut • Standard lock: DOM 311 17 18  
 NJO 3
NBY Switching element  
 19 Each Part Number listed below includes all the black components shown in the 3D-drawing. To obtain a complete unit, please select the red components from the pages shown. Mounting cut-outs [mm] 22 31 0 I I 0 II 0 I II 0 II II 41 I 45 Actuator, Front dimension 24 mm x 24 mm Switching action Contacts Terminal Switching system Switching angle Part No. Wiring diagram Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-381.F22DF 262 Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-382.F22DF 262 Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-383.F22DF 262 Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 42° right 51-384.F22DF 260 Momentary - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-385.F22DF 259 Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-386.F22DF 259 Maintained - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-387.F22DF 261 Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-388.F22DF 261 56 57 61 Contacts: NC = Normally closed, NO = Normally open a = Key remove 70 Wiring diagrams 1 3 51 71 1 C 3 1 B 3 1 C 3 82 B 84 2 4 2 4 2 4 2 4 92 Wiring diagram 259 Wiring diagram 260 96 05/2020 § eao.com 601 51 Flush design 01 Wiring diagrams 1 02 3 1 C 3 1 B 3 1 C 3 B 03 2 2 4 2 4 4 2 4 04 Wiring diagram 261 Wiring diagram 262 09 14 17 18 19 22 31 41 45 51 Follow us. We are on YouTube! 56 EAO ermöglicht. Seit 1947. 57 61 70 71 Come take a look at our YouTube profi le today! Be sure to give us a follow so that you can fully interact with us. 82 https://www.youtube.com/user/eaoswitches 84 92 www.eao.com 96 602 ​ eao.com § 05/2020 Flush design 51 Keylock switch 3 positions rectangular, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 5 02 03 Actuator 3.5 04 50 27 Front bezel set Page 658 Dimensions [mm] 09 Product can differ from the current configuration. 14 General information Fixing nut 
NJO • Standard lock: DOM 311 17 18  
 Switching element NJO 3
NBY  Each Part Number listed below includes all the black components shown in the 3D-drawing. To obtain a complete unit, please select the red components from the pages shown. 0 I I 0 II 0 I II 0 II 
 19 Mounting cut-outs [mm] 22 31 II I 41 Actuator, Front dimension 30 mm x 24 mm 45 Wiring diagram Switching action Contacts Terminal Switching system Switching angle Part No. Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-361.F22DF 262 Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-362.F22DF 262 Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-363.F22DF 262 Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 42° right 51-364.F22DF 260 Momentary - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-365.F22DF 259 Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-366.F22DF 259 Maintained - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-367.F22DF 261 Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-368.F22DF 261 56 57 61 Contacts: NC = Normally closed, NO = Normally open a = Key remove 70 Wiring diagrams 1 3 51 1 C 3 1 B 3 1 C 71 3 B 82 2 Wiring diagram 259 4 2 4 2 4 2 84 4 92 Wiring diagram 260 96 05/2020 § eao.com 603 51 Flush design 01 Wiring diagrams 1 02 3 1 C 3 1 B 3 1 C 3 B 03 2 4 2 4 2 4 2 4 04 Wiring diagram 261 Wiring diagram 262 09 14 17 18 19 22 31 41 45 51 56 57 61 70 71 82 84 92 96 604 ​ eao.com § 05/2020 Flush design 51 Keylock switch 3 positions round, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 5 02 03 Actuator 3.5 04 50 27 Dimensions [mm] Front bezel set 09 Product can differ from the current configuration. Page 658 14 General information NJO • Standard lock: DOM 311 Page 659 17 NJO Anti-twist ring Fixing nut 18  ±
 Switching element Each Part Number listed below includes all the black components shown in the 3D-drawing. 19 Mounting cut-outs [mm] 22 To obtain a complete unit, please select the red components from the pages shown. 0 I I 0 II II I 0 0 II 31 41 II I 45 51 Actuator, Front dimension Ø 25 mm Switching action Contacts Terminal Switching system Switching angle Part No. Wiring diagram Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-371.F22DF 262 Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-372.F22DF 262 Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-373.F22DF 262 Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 42° right 51-374.F22DF 260 Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-376.F22DF 259 Maintained - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-377.F22DF 261 Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-378.F22DF 261 Momentary - Rest - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-375.F22DF 259 56 57 61 70 Contacts: NC = Normally closed, NO = Normally open a = Key remove 71 82 84 92 96 05/2020 § eao.com 605 51 Flush design 01 Wiring diagrams 1 02 3 1 C 3 1 B 3 1 C 3 B 03 2 4 2 4 2 4 2 3 1 4 04 Wiring diagram 259 Wiring diagram 260 09 14 Wiring diagrams 1 17 3 1 C 3 1 B C 3 B 18 2 4 2 4 2 4 2 4 19 Wiring diagram 261 Wiring diagram 262 22 31 41 45 51 56 57 61 70 71 82 84 92 96 606 ​ eao.com § 05/2020 Flush design 51 Indicator square, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 4 02 B Lens Page 653 34 03 A LED Page 660 C 2 31 04 41 3 09 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Front bezel set Product can differ from the current configuration. 14 Page 658 17 NJO 3
NBY Each Part Number listed below includes all the black components shown in the 3D-drawing. To obtain a complete unit, please select the red components from the pages shown. NJO 18  
 Fixing nut 19  
 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension 24 mm x 24 mm Component Layout 45 51 Terminal Part No. Wiring diagram Plug-in terminal 51-050.002F 4 105 Soldering terminal 51-050.005F 4 105 Universal terminal 51-051.006F 3 105 56 Wiring diagrams 57 b+ x2+ 61 a- x1- 70 Wiring diagram 3 Wiring diagram 4 71 82 84 92 96 05/2020 § eao.com 607 51 Flush design 01 Component layouts 02 A 03 Ø18 mm X1 X2 04 09 14 Component layout 105 Dimensions [mm] A = Terminals (rear side) 17 18 19 22 31 41 45 51 56 57 61 70 71 82 84 92 96 608 ​ eao.com § 05/2020 Flush design 51 Indicator rectangular, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 4 02 B Lens Page 653 34 03 A LED Page 660 C 2 31 04 41 3 09 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Front bezel set Product can differ from the current configuration. 14 Page 658 17 
NJO 3
NBY Each Part Number listed below includes all the black components shown in the 3D-drawing. NJO 18  
 Fixing nut 19  To obtain a complete unit, please select the red components from the pages shown. 
 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension 30 mm x 24 mm Component Layout 45 51 Terminal Part No. Wiring diagram Plug-in terminal 51-050.002F 4 105 Soldering terminal 51-050.005F 4 105 Universal terminal 51-051.006F 3 105 56 Wiring diagrams 57 b+ x2+ 61 a- x1- 70 Wiring diagram 3 Wiring diagram 4 71 82 84 92 96 05/2020 § eao.com 609 51 Flush design 01 Component layouts 02 A 03 Ø18 mm X1 X2 04 09 14 Component layout 105 Dimensions [mm] A = Terminals (rear side) 17 18 19 22 31 41 45 51 EAO Downloads. www.eao.com/downloads 56 EAO creates possibilities. Since 1947. 57 61 70 71 On our website you can download technical data, assembly instructions, catalogs, brochures and much more. 82 84 92 www.eao.com 96 610 ​ eao.com § 05/2020 Flush design 51 Indicator round, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 4 02 B Lens Page 653 34 LED 03 A Page 660 C 2 31 04 41 3 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Front bezel set 09 Product can differ from the current configuration. 14 Page 658 17 NJO Page 659 18 NJO Anti-twist ring Fixing nut To obtain a complete unit, please select the red components from the pages shown. 19  Each Part Number listed below includes all the black components shown in the 3D-drawing. ±
 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension Ø 25 mm Component Layout Terminal Part No. Wiring diagram Plug-in terminal 51-050.002F 4 105 Soldering terminal 51-050.005F 4 105 Universal terminal 51-051.006F 3 105 45 51 56 Wiring diagrams 57 b+ x2+ a- x1- Wiring diagram 3 Wiring diagram 4 61 70 71 82 84 92 96 05/2020 § eao.com 611 51 Flush design 01 Component layouts 02 A 03 Ø18 mm X1 X2 04 09 14 Component layout 105 Dimensions [mm] A = Terminals (rear side) 17 18 19 22 31 41 45 51 56 57 61 70 71 82 84 92 96 612 ​ eao.com § 05/2020 Raised design 51 Illuminated pushbutton square, IP65 Equipment consisting of (schematic overview) 01 1.5 … 6 B 02 36 Lens Page {$l=Vorsatz} C A LED 03 Page 660 32 10.5 28 … 50.5 3 04 D 43.5 / 51 09 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm D = Universal-Solder terminal 14 17 24min. 18x24 Each Part Number listed below includes all the black components shown in the 3D-drawing. 18 min. 18x18/ Ø18 18 +0.1 0 To obtain a complete unit, please select the red components from the pages shown. +0.2 0 Ø16.2 0 18 min. 15 1.7-0.1 Fixing nut Product can differ from the current configuration. 19 +0.2 0 Ø16.2 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension 18 mm x 18 mm 27 Contacts Terminal Switching system Momentary 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-151.022 20 1 NC / 1 NO Soldering terminal Snap-action switching element 51-151.0252 17 Momentary Maintained Momentary Maintained Part No. Component Layout Switching action Maintained Diode 1N4007 Wiring diagram 2 NC / 2 NO Soldering terminal Snap-action switching element 51-152.0252 24 3 NC / 3 NO Soldering terminal Snap-action switching element 51-153.0252 26 4 NC / 4 NO Soldering terminal Snap-action switching element 51-154.0252 28 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-281.022 18 1 NC / 1 NO Soldering terminal Snap-action switching element 51-281.0252 19 2 NC / 2 NO Soldering terminal Snap-action switching element 51-282.0252 25 3 NC / 3 NO Soldering terminal Snap-action switching element 51-283.0252 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-284.0252 29 27 Universal terminal Low-level element 51-451.036 11 Universal terminal Low-level element 51-452.036 30 27 1 NC / 1 NO Universal terminal Low-level element 51-453.036 7 27 27 27 1 NO Universal terminal Low-level element 51-455.036 9 2 NO Universal terminal Low-level element 51-481.036 12 27 1 NC / 1 NO Universal terminal Low-level element 51-483.036 8 27 1 NO Universal terminal Low-level element 51-485.036 10 27 1 NC Universal terminal Low-level element 51-486.036 6 27 Universal soldering terminal Snap-action switching element 2 51-710.0292 15 Universal soldering terminal Snap-action switching element 2 51-712.0292 23 1 NC / 1 NO Universal soldering terminal Snap-action switching element 2 51-718.0292 16 2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-720.0292 32 57 61 2 NO 1 NC / 1 NO 51 56 2 NC 2 NC / 2 NO 45 70 71 82 84 92 Contacts: NC = Normally closed, NO = Normally open 96 05/2020 § eao.com 613 51 Raised design 01 Wiring diagrams 02 1 b+ 1 3 b+ 1 3 b+ 1 b+ 1 b+ 1 3 b+ 2 a- 2 4 a- 2 4 a- 2 a- 2 a- 2 4 a- 03 04 Wiring diagram 6 09 1 Wiring diagram 7 3 b+ Wiring diagram 8 1 3 b+ 3 Wiring diagram 9 1 1 3 I b+ Wiring diagram 10 3 1 1 I Wiring diagram 11 3 x2+ 4 x1- I 14 17 18 4 2 2 a- Wiring diagram 12 1 19 3 4 a- 2 Wiring diagram 15 b+ 1 I 2 4 4 a- 2 2 4 Wiring diagram 16 3 x2+ 1 I 3 Wiring diagram 17 b+ 1 I 3 1 I 3 b+ 3 1 4 a- 2 4 II 22 2 4 2 a- 4 2 x1- 4 2 a- 2 4 31 Wiring diagram 18 41 1 3 Wiring diagram 19 1 I 3 Wiring diagram 20 x2+ 1 II 3 1 I 3 Wiring diagram 23 x2+ 1 II 3 1 I 3 1 II 3 x2+ 4 x1- 3 b+ 3 1 4 a- 2 4 III 45 2 51 56 2 4 2 x1- Wiring diagram 24 1 57 3 2 1 3 1 II 4 1 3 4 2 x1- 2 3 4 2 x2+ 1 3 1 I 4 2 4 2 4 Wiring diagram 26 III 2 x1- Wiring diagram 27 71 2 4 Wiring diagram 25 I 61 70 4 3 1 II 4 3 1 III 2 4 1 3 2 3 x2+ 4 x1- IV 4 2 Wiring diagram 28 1 I 3 1 II 3 1 III 3 x2+ b+ 1 IV 3 1 I II 82 2 84 92 4 Wiring diagram 29 2 4 2 4 2 4 x1- 2 4 Wiring diagram 30 a- 2 4 2 Wiring diagram 32 96 614 ​ eao.com § 05/2020 Raised design 51 Component layouts 01 02 D 2 a b 2 4 a 04 3 1 3 1 10.16 b 2 4 1 3 a b 03 7.62 b 4 4 2 C 1 3 C a b 2 4 1 3 a b 4 2 C 1 3 C a b 2 4 4 2 a b 1 3 B a A 1 3 Ø1.0 (6x) 09 14 10.16 18 mm x 24 mm 5.08 18 mm x 18 mm 5.08 Ø18 mm 17 Ø1.0 (6x) 7.62 18 Component layout 27 19 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 22 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 615 51 Raised design 01 Illuminated pushbutton rectangular, IP65 1.5 … 6 02 Equipment consisting of (schematic overview) B 36 03 A 32 04 10.5 28 … 50.5 3 Product can differ from the current configuration. 14 Page 660 Fixing nut Each Part Number listed below includes all the black components shown in the 3D-drawing. 24min. 18x24 18min. 18x18/ Ø18 18 To obtain a complete unit, please select the red components from the pages shown. +0.1 0 19 +0.2 0 Ø16.2 0 1.7-0.1 18 min. 15 22 LED Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm D = Universal-Solder terminal 17 Page 653 D 43.5 / 51 09 Lens C +0.2 0 Ø16.2 Mounting cut-outs [mm] 31 41 Actuator, Front dimension 24 mm x 18 mm 45 51 57 Terminal Switching system 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-121.022 20 1 NC / 1 NO Soldering terminal Snap-action switching element 51-121.0252 17 61 Momentary 70 71 Maintained 82 Momentary 84 92 96 27 Contacts Momentary Maintained Maintained Part No. Component Layout Switching action 56 Diode 1N4007 Wiring diagram 2 NC / 2 NO Soldering terminal Snap-action switching element 51-122.0252 24 3 NC / 3 NO Soldering terminal Snap-action switching element 51-123.0252 26 4 NC / 4 NO Soldering terminal Snap-action switching element 51-124.0252 28 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-261.022 18 1 NC / 1 NO Soldering terminal Snap-action switching element 51-261.0252 19 2 NC / 2 NO Soldering terminal Snap-action switching element 51-262.0252 25 3 NC / 3 NO Soldering terminal Snap-action switching element 51-263.0252 27 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-264.0252 29 2 NO Universal terminal Low-level element 51-421.036 11 2 NC Universal terminal Low-level element 51-422.036 30 27 1 NC / 1 NO Universal terminal Low-level element 51-423.036 7 27 27 1 NO Universal terminal Low-level element 51-425.036 9 27 1 NC Universal terminal Low-level element 51-426.036 5 27 2 NO Universal terminal Low-level element 51-461.036 12 27 1 NC / 1 NO Universal terminal Low-level element 51-463.036 8 27 51-465.036 10 27 51-705.0292 13 1 NO Universal terminal Low-level element 1 NC / 1 NO Universal soldering terminal Snap-action switching element 1 1 NC / 1 NO Universal soldering terminal Snap-action switching element 2 51-706.0292 15 2 NC / 2 NO Universal soldering terminal Snap-action switching element 1 51-707.0292 32 2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-708.0292 23 1 NC / 1 NO Universal soldering terminal Snap-action switching element 2 51-714.0292 16 2 NC / 2 NO Universal soldering terminal Snap-action switching element 1 51-715.0292 22 2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-716.0292 32 Contacts: NC = Normally closed, NO = Normally open 616 eao.com § 05/2020 Raised design 51 Wiring diagrams 01 1 b+ 1 3 b+ 1 3 b+ 1 b+ 1 b+ 1 3 b+ 2 a- 2 4 a- 2 4 a- 2 a- 2 a- 2 4 a- 02 03 04 Wiring diagram 5 1 Wiring diagram 7 3 b+ Wiring diagram 8 1 3 b+ Wiring diagram 9 3 1 3 I b+ 3 Wiring diagram 10 1 1 3 I Wiring diagram 11 b+ 3 09 1 I 14 4 2 2 a- Wiring diagram 12 1 3 4 a- 2 2 Wiring diagram 13 x2+ 1 I 4 a- 2 2 4 Wiring diagram 15 3 b+ 1 I 4 a- 2 17 4 18 Wiring diagram 16 3 x2+ 1 I 3 b+ 4 a- 19 I 22 2 4 2 x1- 4 2 a- 4 2 x1- 31 Wiring diagram 17 1 3 Wiring diagram 18 1 I 3 b+ Wiring diagram 19 3 1 II 3 1 I Wiring diagram 20 3 b+ 3 1 1 3 1 3 I II 41 x2+ II 45 2 4 2 4 a- 2 2 Wiring diagram 22 1 3 1 3 x2+ 1 II 4 3 a- 2 2 4 2 3 4 2 x1- 1 3 1 II 2 4 3 x2+ 1 1 3 1 II 3 1 III 3 4 x1- 51 4 2 56 3 III 1 3 I 4 2 x1- Wiring diagram 26 I 2 4 Wiring diagram 24 I Wiring diagram 25 1 4 Wiring diagram 23 I 2 2 4 1 II 2 4 3 x2+ 4 x1- 57 III 2 4 61 70 Wiring diagram 27 x2+ 1 IV 3 1 I 3 1 II 3 1 III 3 71 x2+ IV 82 2 4 Wiring diagram 28 2 4 2 4 2 4 x1- 2 4 2 4 2 4 2 4 x1- 84 Wiring diagram 29 92 96 05/2020 § eao.com ​ 617 51 Raised design 01 Wiring diagrams 1 02 3 b+ 1 3 1 I 3 b+ 3 1 4 a- 2 4 II 03 2 4 2 a- 4 2 04 Wiring diagram 30 Wiring diagram 32 09 Component layouts 17 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 b 4 2 a b 2 4 2 1 3 a b 1 3 C a b 2 4 C 4 2 1 3 a 1 3 41 b C a b 2 4 a C 4 2 B 1 3 31 b 22 a A 1 3 19 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 18 5.08 14 Ø1.0 (6x) 7.62 45 Component layout 27 51 56 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 57 61 70 71 82 84 92 96 618 ​ eao.com § 05/2020 Raised design 51 Illuminated pushbutton round, IP65 01 Equipment consisting of (schematic overview) Lens 1.5 … 6 B C A LED 02 36 Page 653 03 Page 660 32 10.5 28 … 50.5 3 04 D 43.5 / 51 09 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm D = Universal-Solder terminal Product can differ from the current configuration. 14 Fixing nut 17 24min. 18x24 Each Part Number listed below includes all the black components shown in the 3D-drawing. 18 min. 18x18/ Ø18 18 +0.1 0 0 18 min. +0.2 0 Ø16.2 1.7-0.1 15 To obtain a complete unit, please select the red components from the pages shown. 19 +0.2 0 Ø16.2 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension Ø 18 mm 27 Contacts Terminal Switching system Momentary 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-131.022 20 1 NC / 1 NO Soldering terminal Snap-action switching element 51-131.0252 17 Momentary Maintained Momentary Maintained Part No. Component Layout Switching action Maintained Diode 1N4007 Wiring diagram 2 NC / 2 NO Soldering terminal Snap-action switching element 51-132.0252 24 3 NC / 3 NO Soldering terminal Snap-action switching element 51-133.0252 26 4 NC / 4 NO Soldering terminal Snap-action switching element 51-134.0252 28 1 NC / 1 NO Plug-in terminal Snap-action switching element 51-271.022 18 1 NC / 1 NO Soldering terminal Snap-action switching element 51-271.0252 19 2 NC / 2 NO Soldering terminal Snap-action switching element 51-272.0252 25 3 NC / 3 NO Soldering terminal Snap-action switching element 51-273.0252 27 4 NC / 4 NO Soldering terminal Snap-action switching element 51-274.0252 29 27 Universal terminal Low-level element 51-431.036 11 Universal terminal Low-level element 51-433.036 7 27 1 NO Universal terminal Low-level element 51-435.036 9 27 27 27 1 NC Universal terminal Low-level element 51-436.036 5 2 NO Universal terminal Low-level element 51-471.036 12 27 1 NC / 1 NO Universal terminal Low-level element 51-473.036 8 27 51-475.036 10 27 51-746.0292 23 Universal terminal Low-level element Universal soldering terminal Snap-action switching element 2 1 NC / 1 NO Universal soldering terminal Snap-action switching element 1 51-747.0292 14 2 NC / 2 NO Universal soldering terminal Snap-action switching element 1 51-749.0292 22 2 NC / 2 NO Universal soldering terminal Snap-action switching element 2 51-750.0292 32 57 61 2 NO 1 NO 51 56 1 NC / 1 NO 2 NC / 2 NO 45 70 71 82 84 Contacts: NC = Normally closed, NO = Normally open 92 96 05/2020 § eao.com 619 51 Raised design 01 Wiring diagrams 02 1 b+ 1 3 b+ 1 3 b+ 1 b+ 1 b+ 1 3 b+ 2 a- 2 4 a- 2 4 a- 2 a- 2 a- 2 4 a- 03 04 Wiring diagram 5 09 1 Wiring diagram 7 3 b+ Wiring diagram 8 1 3 b+ 3 1 I Wiring diagram 9 Wiring diagram 10 3 1 x2+ 3 I Wiring diagram 11 b+ 1 I 3 x2+ 4 x1- I 14 17 18 4 2 2 a- Wiring diagram 12 1 19 3 4 a- 2 2 Wiring diagram 14 b+ 1 I 4 2 x1- Wiring diagram 17 3 1 I 3 2 a- Wiring diagram 18 3 b+ 4 1 II 3 1 I Wiring diagram 19 3 b+ 3 1 4 a- 2 4 II 22 2 4 2 a- 2 4 4 a- 2 2 2 4 31 Wiring diagram 20 41 1 3 Wiring diagram 22 1 I 3 Wiring diagram 23 x2+ 1 II 3 1 I 3 x2+ 1 3 II 1 I 3 1 II 3 x2+ 4 x1- III 45 2 51 56 2 4 2 x1- Wiring diagram 24 1 57 3 2 1 3 1 II 4 1 3 4 2 x1- 2 3 4 2 x2+ 1 3 1 I 4 2 4 2 4 Wiring diagram 26 III 2 x1- Wiring diagram 27 71 2 4 Wiring diagram 25 I 61 70 4 3 1 II 4 2 3 1 III 4 2 3 1 3 x2+ 4 x1- IV 4 2 Wiring diagram 28 1 I 3 1 II 3 1 III 3 x2+ 1 IV I 3 b+ 3 1 4 a- 2 4 II 82 2 84 92 4 Wiring diagram 29 2 4 2 4 2 4 x1- 2 4 2 Wiring diagram 32 96 620 ​ eao.com § 05/2020 Raised design 51 Component layouts 01 02 D 2 a b 2 4 a 04 3 1 3 1 10.16 b 2 4 1 3 a b 03 7.62 b 4 4 2 C 1 3 C a b 2 4 1 3 a b 4 2 C 1 3 C a b 2 4 4 2 a b 1 3 B a A 1 3 Ø1.0 (6x) 09 14 10.16 18 mm x 24 mm 5.08 18 mm x 18 mm 5.08 Ø18 mm 17 Ø1.0 (6x) 7.62 18 Component layout 27 19 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 22 31 41 45 51 Follow us. We are on LinkedIn! 56 EAO creates possibilities. Since 1947. 57 61 70 71 Come take a look at our LinkedIn profi le today! Be sure to give us a follow so that you can fully interact with us. 82 https://www.linkedin.com/company/eao/ 84 92 www.eao.com 05/2020 § eao.com 96 ​ 621 51 Raised design 01 Mushroom-head pushbutton, IP65 Equipment consisting of (schematic overview) 1 ... 3 02 B 27.6 03 A Actuator C 04 19 18.8 26.3 Product can differ from the current configuration. 14 General information Fixing nut Each Part Number listed below includes all the black components shown in the 3D-drawing. NJO • If the anti-twist ring is not used the panel thickness increases to 4 mm 18 19 NJO



17 Anti-twist ring 3 Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm  09 24  
   ± 22 Mounting cut-outs [mm] 31 41 45 Actuator, Front dimension Ø 24,5 mm Contacts Terminal Lens colour Switching system Part No. Wiring diagram 2 NC Universal terminal Red Low-level element 51-152.0262 243 Universal terminal Yellow Low-level element 51-152.0264 243 Universal terminal Blue Low-level element 51-152.0266 243 Plug-in terminal Red Snap-action switching element 51-153.0222 247 Plug-in terminal Yellow Snap-action switching element 51-153.0224 247 Plug-in terminal Blue Snap-action switching element 51-153.0226 247 Universal terminal Red Low-level element 51-153.0262 406 Universal terminal Yellow Low-level element 51-153.0264 406 Universal terminal Blue Low-level element 51-153.0266 406 Soldering terminal Red Snap-action switching element 51-156.0252 247 Soldering terminal Yellow Snap-action switching element 51-156.0254 247 Soldering terminal Blue Snap-action switching element 51-156.0256 247 Universal terminal Red Low-level element 51-156.0262 247 Universal terminal Yellow Low-level element 51-156.0264 404 Universal terminal Blue Low-level element 51-156.0266 404 Soldering terminal Red Snap-action switching element 51-159.0252 251 Soldering terminal Yellow Snap-action switching element 51-159.0254 251 Soldering terminal Blue Snap-action switching element 51-159.0256 251 51 1 NC / 1 NO 56 57 61 70 71 82 1 NC 2 NC / 2 NO Contacts: NC = Normally closed, NO = Normally open 84 92 96 622 eao.com § 05/2020 Raised design 51 Wiring diagrams 1 3 01 1 3 1 I 3 1 I 3 1 1 3 4 2 2 4 02 II 03 2 4 2 4 2 4 2 04 Wiring diagram 243 Wiring diagram 247 Wiring diagram 251 Wiring diagram 404 Wiring diagram 406 09 14 17 18 19 22 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 623 51 Raised design 01 Selector switch 2 positions, round, IP65 1.5 … 6 02 Equipment consisting of (schematic overview) B 36 03 C A 36 04 6 14 Product can differ from the current configuration. 14 17 LED Page 660 43.5 / 51 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm D = Universal-Solder terminal General information NJO Y • Illuminative NJO Y ±



 18 Page 657 D 32 … 54.5 Anti-twist ring Page 659 Fixing nut NJO 09 3 Lever Each Part Number listed below includes all the black components shown in the 3D-drawing. 19 To obtain a complete unit, please select the red components from the pages shown.  
   22 ± Mounting cut-outs [mm] 31 0 41 I 0 I 45 Actuator, Front dimension Ø 18 mm 51 56 Switching action Terminal Switching system Contacts Part No. Wiring diagram Rest - Momentary Plug-in terminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.022 272 Soldering terminal Snap-action switching element 1 NC / 1 NO 42° right 52-131.0252 271 Soldering terminal Snap-action switching element 2 NC / 2 NO 42° right 52-132.0252 273 Soldering terminal Snap-action switching element 3 NC / 3 NO 42° right 52-133.0252 274 Soldering terminal Snap-action switching element 4 NC / 4 NO 42° right 52-134.0252 275 Snap-action switching element 1 NC / 1 NO 90° right 52-271.022 277 Soldering terminal Snap-action switching element 1 NC / 1 NO 90° right 52-271.0252 276 Soldering terminal Snap-action switching element 2 NC / 2 NO 90° right 52-272.0252 278 Soldering terminal Snap-action switching element 3 NC / 3 NO 90° right 52-273.0252 279 Soldering terminal Snap-action switching element 4 NC / 4 NO 90° right 52-274.0252 280 1 NC / 1 NO 42° right 52-433.036 264 57 61 70 Rest - Maintained Plug-in terminal 71 82 84 92 Rest - Momentary Universal terminal Low-level element Switching angle Diode 1N4007 Component Layout 27 Contacts: NC = Normally closed, NO = Normally open 96 624 eao.com § 05/2020 Raised design Switching action Diode 1N4007 51 Part No. Wiring diagram Component Layout Terminal Switching system Contacts Switching angle Rest - Momentary Universal terminal Low-level element 1 NO 42° right 52-435.036 265 27 Universal terminal Low-level element 1 NC 42° right 52-436.036 263 27 Rest - Maintained Universal terminal Low-level element 2 NO 90° right 52-471.036 270 27 Universal terminal Low-level element 2 NC 90° right 52-472.036 269 27 Universal terminal Low-level element 1 NC / 1 NO 90° right 52-473.036 267 27 Universal terminal Low-level element 1 NO 90° right 52-475.036 268 27 Universal terminal Low-level element 1 NC 90° right 52-476.036 266 27 Rest - Momentary Universal soldering terminal Snap-action switching element 2 NC / 2 NO 42° right 1 52-745.0292 281 Rest - Maintained Universal soldering terminal Snap-action switching element 1 NC / 1 NO 90° right 1 52-747.0292 282 Universal soldering terminal Snap-action switching element 2 NC / 2 NO 90° right 1 52-749.0292 283 Universal soldering terminal Snap-action switching element 2 NC / 2 NO 90° right 2 52-750.0292 284 01 02 03 04 09 14 17 Contacts: NC = Normally closed, NO = Normally open 18 Wiring diagrams 1 b+ 1 3 b+ 1 b+ 1 19 b+ 22 2 a- 2 4 a- 2 2 a- a- 31 Wiring diagram 263 Wiring diagram 264 1 3 Wiring diagram 265 b+ 1 Wiring diagram 266 b+ 1 3 41 b+ 45 4 2 a- 2 Wiring diagram 267 Wiring diagram 268 1 3 b+ 2 a- 4 51 a- 56 Wiring diagram 269 1 3 x2+ 1 I 3 57 b+ I 61 4 2 2 a- 4 2 x1- 4 a- 70 Wiring diagram 270 Wiring diagram 271 1 3 1 I 2 Wiring diagram 273 3 x2+ Wiring diagram 272 1 II 4 2 3 1 I 4 2 x1- 3 1 II 4 2 3 71 x2+ III 4 2 82 4 84 x1- 92 Wiring diagram 274 96 05/2020 § eao.com ​ 625 51 Raised design 01 Wiring diagrams 1 02 3 1 I 3 1 II 3 1 III 3 x2+ 1 IV 3 x2+ 4 x1- I 03 2 2 4 2 4 2 4 4 2 x1- 04 Wiring diagram 275 09 Wiring diagram 276 1 3 b+ 1 I 3 1 I 3 x2+ 4 x1- II 14 17 18 2 4 2 a- Wiring diagram 277 2 Wiring diagram 278 1 19 4 3 1 I 3 1 II 3 x2+ 1 III 3 1 I 3 1 II 3 1 III 3 x2+ 4 x1- IV 22 2 4 2 2 4 4 2 x1- 2 4 2 4 4 2 31 Wiring diagram 279 41 Wiring diagram 280 1 3 1 I 3 b+ 3 1 II 3 b+ 3 4 a- 2 I 45 2 51 56 2 4 a- Wiring diagram 282 1 3 1 I 61 2 Wiring diagram 283 2 2 Wiring diagram 281 57 70 4 3 b+ 3 1 II 4 2 3 1 I 4 a- 2 2 3 b+ 3 1 4 a- 2 4 II 4 2 Wiring diagram 284 71 82 84 92 96 626 ​ eao.com § 05/2020 Raised design 51 Component layouts 01 02 D 2 a b 2 4 a 04 3 1 3 1 10.16 b 2 4 1 3 a b 03 7.62 b 4 4 2 C 1 3 C a b 2 4 1 3 a b 4 2 C 1 3 C a b 2 4 4 2 a b 1 3 B a A 1 3 Ø1.0 (6x) 09 14 10.16 18 mm x 24 mm 5.08 18 mm x 18 mm 5.08 Ø18 mm 17 Ø1.0 (6x) 7.62 18 Component layout 27 19 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 22 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 627 51 Raised design Selector switch 3 positions, round, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 6 02 Lever Page 657 LED Page 660 03 04 6 14 Actuator Product can differ from the current configuration. 14 Dimensions [mm] General information NJO Y • Illuminative NJO Y ±



 17 18 Anti-twist ring Each Part Number listed below includes all the black components shown in the 3D-drawing.  
 19 Page 659 Switching element NJO 09 42  ±  To obtain a complete unit, please select the red components from the pages shown. Mounting cut-outs [mm] 22 0 31 I I 0 II II I 0 0 II II I 41 Actuator, Front dimension Ø 18 mm 45 51 56 Switching action Terminal Switching system Contacts Switching angle Part No. Wiring diagram Maintained - Rest - Maintained Plug-in terminal Snap-action switching element 2 NC / 2 NO 90° left / 90° right 52-571.F22A 288 Momentary - Rest - Momentary Plug-in terminal Snap-action switching element 2 NC / 2 NO 42° left / 42° right 52-572.F22A 285 Momentary - Rest - Maintained Plug-in terminal Snap-action switching element 2 NC / 2 NO 42° left / 90° right 52-573.F22A 287 Maintained - Rest - Momentary Plug-in terminal Snap-action switching element 2 NC / 2 NO 90° left / 42° right 52-574.F22A 286 Contacts: NC = Normally closed, NO = Normally open 57 61 70 71 82 84 92 96 628 eao.com § 05/2020 Raised design 51 Wiring diagrams 1 3 01 1 C 3 b+ 1 B 3 1 C 3 b+ 4 a- 02 B 03 2 2 4 4 a- 2 4 2 04 Wiring diagram 285 1 Wiring diagram 286 3 1 C 3 b+ 1 B 3 1 C 3 09 b+ B 14 2 2 4 Wiring diagram 287 4 a- 2 4 2 4 17 a- 18 Wiring diagram 288 19 22 31 41 45 51 EAO Downloads. www.eao.com/downloads 56 EAO creates possibilities. Since 1947. 57 61 70 71 On our website you can download technical data, assembly instructions, catalogs, brochures and much more. 82 84 92 www.eao.com 05/2020 § eao.com 96 ​ 629 51 Raised design 01 Keylock switch 2 positions square, IP65 Equipment consisting of (schematic overview) 1.5 … 6 02 B 36 03 A Actuator C 04 11.5 26.5 … 49 32.5 35 09 Anti-twist ring Product can differ from the current configuration. 14 17 3 Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm General information NJO Y • Standard lock: DOM 311 NJO Y ± Fixing nut Each Part Number listed below includes all the black components shown in the 3D-drawing. 18 19 NJO



 • Front plastic black  
   ± 22 Mounting cut-outs [mm] 31 0 41 0 I 45 51 I Actuator, Front dimension 18 mm x 18 mm 57 Terminal Switching system Switching angle 1 NC / 1 NO Plug-in terminal Snap-action switching element 42° right 51-145.022D 257 1 NC / 1 NO Soldering terminal Snap-action switching element 42° right 51-145.025D2 257 2 NC / 2 NO Soldering terminal Snap-action switching element 42° right 51-146.025D2 113 4 NC / 4 NO Soldering terminal Snap-action switching element 42° right 51-148.025D2 258 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-155.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-155.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-156.025D2 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-157.025D2 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-158.025D2 116 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-255.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-255.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-256.025D2 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-257.025D2 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-258.025D2 116 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-355.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-355.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-356.025D2 108 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-358.025D2 116 2 NO Universal terminal Low-level element 90° right 51-441.036D 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-442.036D 111 27 2 NO Universal terminal Low-level element 90° right 51-444.036D 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-445.036D 111 27 Rest (a) - Maintained (a) Rest (a) - Maintained 71 82 84 92 96 27 Contacts Rest (a) - Momentary 61 70 Component Layout Switching action 56 Rest - Maintained (a) Rest (a) - Maintained (a) Rest (a) - Maintained Part No. Wiring diagram 27 27 27 a = Key remove Contacts: NC = Normally closed, NO = Normally open 630 eao.com § 05/2020 Raised design Switching action Contacts Terminal Switching system Switching angle Part No. Wiring diagram 51 Component Layout Rest - Maintained (a) 1 NC / 1 NO Universal terminal Low-level element 90° right 51-448.036D 111 27 Rest (a) - Momentary 2 NO Universal terminal Low-level element 42° right 51-457.036D 109 27 1 NC / 1 NO Universal terminal Low-level element 42° right 51-458.036D 110 27 01 02 a = Key remove Contacts: NC = Normally closed, NO = Normally open 03 04 Wiring diagrams 1 3 1 I 3 1 I 3 1 09 3 II 14 2 2 4 4 2 4 2 4 17 Wiring diagram 107 Wiring diagram 108 1 Wiring diagram 109 1 3 3 1 18 3 19 4 2 Wiring diagram 110 Wiring diagram 111 1 3 1 I 22 4 2 4 2 31 Wiring diagram 112 3 1 II 3 1 I 3 1 II 41 3 III 45 2 4 2 2 4 4 2 4 2 4 51 Wiring diagram 113 Wiring diagram 115 56 1 3 1 I 2 3 1 II 4 2 3 1 III 4 2 3 1 IV 4 2 3 I 2 4 Wiring diagram 116 57 61 4 70 Wiring diagram 257 1 3 1 I 3 1 II 3 1 III 3 71 IV 82 2 4 2 4 2 4 2 4 84 Wiring diagram 258 92 96 05/2020 § eao.com ​ 631 51 Raised design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 56 57 61 70 71 82 84 92 96 632 ​ eao.com § 05/2020 Raised design 51 Keylock switch 2 positions rectangular, IP65 Equipment consisting of (schematic overview) 01 1.5 … 6 02 B 36 03 A Actuator C 11.5 26.5 … 49 32.5 35 Anti-twist ring Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Fixing nut Each Part Number listed below includes all the black components shown in the 3D-drawing. 04 3 09 Product can differ from the current configuration. 14 NJO Y General information NJO Y ± • Standard lock: DOM 311 17 18 NJO



 • Front plastic black 19  
   ± 22 Mounting cut-outs [mm] 31 0 0 I 41 I 45 Actuator, Front dimension 24 mm x 18 mm Component Layout 27 Switching action Contacts Terminal Switching system Switching angle Part No. Wiring diagram Rest (a) - Maintained (a) 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-195.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-195.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-196.025D2 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-197.025D2 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-198.025D2 116 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-295.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-295.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-296.025D2 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-297.025D2 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-298.025D2 116 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-395.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-395.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-396.025D2 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-397.025D2 115 Rest (a) - Momentary 1 NC / 1 NO Plug-in terminal Snap-action switching element 42° right 51-495.022D 257 27 Rest (a) - Maintained (a) 2 NO Universal terminal Low-level element 90° right 51-401.036D 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-402.036D 111 27 2 NO Universal terminal Low-level element 90° right 51-404.036D 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-405.036D 111 27 2 NO Universal terminal Low-level element 90° right 51-407.036D 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-408.036D 111 27 2 NO Universal terminal Low-level element 42° right 51-427.036D 109 27 Rest (a) - Maintained Rest - Maintained (a) Rest (a) - Maintained Rest - Maintained (a) Rest (a) - Momentary 56 57 27 61 70 27 71 82 84 92 a = Key remove Contacts: NC = Normally closed, NO = Normally open 05/2020 § eao.com 51 96 633 51 Raised design 01 Switching action Contacts Terminal Switching system Switching angle Part No. Wiring diagram Rest (a) - Momentary 1 NC / 1 NO Universal terminal Low-level element 42° right 51-428.036D 110 1 NC / 1 NO Soldering terminal Snap-action switching element 42° right 51-495.025D2 257 2 NC / 2 NO Soldering terminal Snap-action switching element 42° right 51-496.025D2 113 3 NC / 3 NO Soldering terminal Snap-action switching element 42° right 51-497.025D2 114 4 NC / 4 NO Soldering terminal Snap-action switching element 42° right 51-498.025D2 258 02 03 04 09 Component Layout 27 a = Key remove Contacts: NC = Normally closed, NO = Normally open Wiring diagrams 1 14 3 1 I 3 1 I 3 1 3 4 2 4 II 17 2 2 4 4 2 18 Wiring diagram 107 19 Wiring diagram 108 Wiring diagram 109 1 3 1 3 1 3 2 4 2 4 2 4 22 31 41 Wiring diagram 110 Wiring diagram 111 1 45 51 56 3 1 I 2 3 1 II 4 2 3 1 I 2 4 Wiring diagram 113 57 Wiring diagram 112 3 1 II 4 2 3 III 4 2 3 1 4 Wiring diagram 114 1 3 1 I 3 1 II 3 1 III I 3 1 II 3 1 III 3 IV 61 2 70 71 4 4 2 2 4 Wiring diagram 115 3 1 I 82 84 2 Wiring diagram 257 4 2 3 1 4 2 4 2 4 Wiring diagram 116 1 92 2 3 1 I 2 4 3 1 II 4 2 III 4 2 3 IV 4 2 4 Wiring diagram 258 96 634 ​ eao.com § 05/2020 Raised design 51 Component layouts 01 02 D 2 a b 2 4 a 04 3 1 3 1 10.16 b 2 4 1 3 a b 03 7.62 b 4 4 2 C 1 3 C a b 2 4 1 3 a b 4 2 C 1 3 C a b 2 4 4 2 a b 1 3 B a A 1 3 Ø1.0 (6x) 09 14 10.16 18 mm x 24 mm 5.08 18 mm x 18 mm 5.08 Ø18 mm 17 Ø1.0 (6x) 7.62 18 Component layout 27 19 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 22 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 635 51 Raised design 01 Keylock switch 2 positions round, IP65 Equipment consisting of (schematic overview) 1.5 … 6 02 B 36 03 A Actuator C 04 11.5 26.5 … 49 32.5 35 09 Product can differ from the current configuration. 14 17 3 Anti-twist ring Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm General information NJO Y • Standard lock: DOM 311 NJO Y ± Fixing nut Each Part Number listed below includes all the black components shown in the 3D-drawing. 18 19 NJO



 • Front plastic black  
   ± 22 Mounting cut-outs [mm] 31 0 0 41 45 51 56 I I Actuator, Front dimension Ø 18 mm Terminal Switching system Switching angle 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-135.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-135.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-136.025D2 108 3 NC / 3 NO Soldering terminal Snap-action switching element 90° right 51-137.025D2 115 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-138.025D2 116 1 NC / 1 NO Plug-in terminal Snap-action switching element 42° right 51-141.022D 257 1 NC / 1 NO Soldering terminal Snap-action switching element 42° right 51-141.025D2 257 2 NC / 2 NO Soldering terminal Snap-action switching element 42° right 51-142.025D2 113 4 NC / 4 NO Soldering terminal Snap-action switching element 42° right 51-144.025D2 258 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-235.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-235.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-236.025D2 108 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-238.025D2 116 1 NC / 1 NO Plug-in terminal Snap-action switching element 90° right 51-335.022D 107 1 NC / 1 NO Soldering terminal Snap-action switching element 90° right 51-335.025D2 107 2 NC / 2 NO Soldering terminal Snap-action switching element 90° right 51-336.025D2 108 4 NC / 4 NO Soldering terminal Snap-action switching element 90° right 51-338.025D2 116 2 NO Universal terminal Low-level element 90° right 51-411.036D 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-412.036D 111 27 2 NO Universal terminal Low-level element 90° right 51-414.036D 112 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-415.036D 111 27 1 NC / 1 NO Universal terminal Low-level element 90° right 51-418.036D 111 27 61 Rest (a) - Maintained 71 Rest - Maintained (a) 82 84 Rest (a) - Maintained (a) Rest (a) - Maintained 92 96 27 Contacts Rest (a) - Maintained (a) Rest (a) - Momentary 70 Component Layout Switching action 57 Rest - Maintained (a) Part No. Wiring diagram 27 27 27 a = Key remove Contacts: NC = Normally closed, NO = Normally open 636 eao.com § 05/2020 Raised design Switching action Contacts Terminal Switching system Switching angle Part No. Wiring diagram Rest (a) - Momentary 1 NC / 1 NO Universal terminal Low-level element 42° right 51-438.036D 110 51 Component Layout 27 01 02 a = Key remove Contacts: NC = Normally closed, NO = Normally open 03 Wiring diagrams 1 3 1 I 3 1 I 3 1 04 3 II 09 2 2 4 Wiring diagram 107 4 2 4 Wiring diagram 108 1 3 17 Wiring diagram 110 1 3 1 3 1 I 2 4 2 4 2 14 4 2 3 18 II 4 19 2 4 22 Wiring diagram 111 Wiring diagram 112 1 3 1 I 3 1 II Wiring diagram 113 3 1 III 3 1 I 3 1 II 3 1 III 31 3 IV 41 2 4 2 4 2 2 4 Wiring diagram 115 2 4 2 4 2 4 45 Wiring diagram 116 1 3 1 I 2 Wiring diagram 257 4 3 1 I 2 4 51 3 1 II 4 2 3 1 III 4 2 3 56 IV 4 2 57 4 61 Wiring diagram 258 70 71 82 84 92 96 05/2020 § eao.com ​ 637 51 Raised design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 EAO. Award winning. 56 EAO creates possibilities. Since 1947. 57 61 70 71 EAO provides outstanding design – based almost exclusively on functional and technological considerations. 82 EAO's products and solutions have won numerous design awards over the years. 84 92 www.eao.com 96 638 ​ eao.com § 05/2020 Raised design 51 Keylock switch 3 positions square, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 6 02 03 Actuator 11.5 04 42 35 Anti-twist ring Dimensions [mm] 09 Product can differ from the current configuration. Fixing nut NJO Y General information NJO Y ± • Standard lock: DOM 311 14 17 • Front plastic black Each Part Number listed below includes all the black components shown in the 3D-drawing. NJO



 Switching element 18  
 19   ± Mounting cut-outs [mm] 0 I I 0 II 0 I II 0 II 22 31 II I 41 Actuator, Front dimension 18 mm x 18 mm Wiring diagram Switching action Contacts Terminal Switching system Switching angle Part No. Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-381.F22D 262 Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-382.F22D 262 Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 42° right 51-384.F22D 260 Momentary - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-385.F22D 259 Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-388.F22D 261 51 56 a = Key remove Contacts: NC = Normally closed, NO = Normally open 57 61 Wiring diagrams 1 3 45 1 C 3 1 B 3 1 C 70 3 B 71 2 Wiring diagram 259 4 2 4 2 4 2 4 82 Wiring diagram 260 84 92 96 05/2020 § eao.com 639 51 Raised design 01 Wiring diagrams 1 02 3 1 C 3 1 B 3 1 C 3 B 03 2 4 2 4 2 4 2 4 04 Wiring diagram 261 Wiring diagram 262 09 14 17 18 19 22 31 41 45 51 56 57 61 70 71 82 84 92 96 640 ​ eao.com § 05/2020 Raised design 51 Keylock switch 3 positions rectangular, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 6 02 03 Actuator 11.5 04 42 35 Anti-twist ring Dimensions [mm] 09 Product can differ from the current configuration. Fixing nut Switching element NJO Y General information NJO Y ± • Standard lock: DOM 311 14 17 NJO



 • Front plastic black Each Part Number listed below includes all the black components shown in the 3D-drawing. 18  
 19   ± Mounting cut-outs [mm] 0 I I 0 II 22 0 I II 31 II 41 Actuator, Front dimension 24 mm x 18 mm Wiring diagram Switching action Contacts Terminal Switching system Switching angle Part No. Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-361.F22D 262 Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-362.F22D 262 Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-363.F22D 262 Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 42° right 51-364.F22D 260 Momentary - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-365.F22D 259 Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-366.F22D 259 45 51 56 57 a = Key remove Contacts: NC = Normally closed, NO = Normally open 61 Wiring diagrams 70 1 3 1 C 2 Wiring diagram 259 3 1 B 4 2 3 1 C 4 2 3 B 4 2 71 82 4 84 Wiring diagram 260 92 96 05/2020 § eao.com 641 51 Raised design 01 Wiring diagrams 1 02 3 1 C 3 B 03 2 4 2 4 04 Wiring diagram 262 09 14 17 18 19 22 31 41 45 51 56 57 61 70 71 82 84 92 96 642 ​ eao.com § 05/2020 Raised design 51 Keylock switch 3 positions round, IP65 01 Equipment consisting of (schematic overview) 1.5 ... 6 02 03 Actuator 11.5 04 42 35 Dimensions [mm] Anti-twist ring 09 Product can differ from the current configuration. Fixing nut NJO Y General information NJO Y ± • Standard lock: DOM 311 14 17 Each Part Number listed below includes all the black components shown in the 3D-drawing. NJO



 • Front plastic black Switching element 18  
 19   ± Mounting cut-outs [mm] 0 I I 0 II 0 I II 0 II 22 31 II I 41 Actuator, Front dimension Ø 18 mm Wiring diagram Switching action Contacts Terminal Switching system Switching angle Part No. Maintained - Rest (a) - Maintained 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-371.F22D 262 Maintained (a) - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-372.F22D 262 Maintained (a) - Rest - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 90° right 51-373.F22D 262 Momentary - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 42° right 51-374.F22D 260 Momentary - Rest (a) - Maintained (a) 2 NC / 2 NO Plug-in terminal Snap-action switching element 42° left / 90° right 51-376.F22D 259 Maintained - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-377.F22D 261 Maintained (a) - Rest (a) - Momentary 2 NC / 2 NO Plug-in terminal Snap-action switching element 90° left / 42° right 51-378.F22D 261 51 56 57 a = Key remove Contacts: NC = Normally closed, NO = Normally open 61 Wiring diagrams 1 3 45 70 1 C 3 1 B 3 1 C 3 71 B 82 2 4 2 4 2 4 2 4 84 Wiring diagram 259 Wiring diagram 260 92 96 05/2020 § eao.com 643 51 Raised design 01 Wiring diagrams 1 02 3 1 C 3 1 B 3 1 C 3 B 03 2 2 4 4 2 4 2 4 04 Wiring diagram 261 Wiring diagram 262 09 14 17 18 19 22 31 41 45 51 EAO Downloads. www.eao.com/downloads 56 EAO creates possibilities. Since 1947. 57 61 70 71 On our website you can download technical data, assembly instructions, catalogs, brochures and much more. 82 84 92 www.eao.com 96 644 ​ eao.com § 05/2020 Raised design 51 Indicator square, IP65 01 Equipment consisting of (schematic overview) 02 1.5 ... 6 Lens B Page 653 26 03 A LED Page 660 C 10.5 23 32 04 3 09 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Product can differ from the current configuration. 14 Fixing nut 17 24min. 18x24 18 min. 18x18/ Ø18 Each Part Number listed below includes all the black components shown in the 3D-drawing. +0.1 0 15 18 0 1.7-0.1 18min. To obtain a complete unit, please select the red components from the pages shown. 19 +0.2 Ø16.2 0 +0.2 Ø16.2 0 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension 18 mm x 18 mm Part No. Wiring diagram Plug-in terminal 51-050.002 4 Soldering terminal 51-050.005 4 Terminal Diode 1N4007 Universal terminal Component Layout 51 51-051.006 3 27 1 51-703.006 1 27 2 51-704.006 2 27 56 57 Wiring diagrams b+ 3 b+ 45 3 1 b+ 61 x2+ 70 a- 2 Wiring diagram 1 a- 2 4 Wiring diagram 2 a- x1- 71 Wiring diagram 3 Wiring diagram 4 82 84 92 96 05/2020 § eao.com 645 51 Raised design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 56 57 61 70 71 82 84 92 96 646 ​ eao.com § 05/2020 Raised design 51 Indicator rectangular, IP65 01 Equipment consisting of (schematic overview) 02 1.5 ... 6 Lens B Page 653 26 03 A LED Page 660 C 10.5 23 32 04 3 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Fixing nut 09 Product can differ from the current configuration. 14 17 24min. 18x24 Each Part Number listed below includes all the black components shown in the 3D-drawing. 18 min. 18x18/ Ø18 To obtain a complete unit, please select the red components from the pages shown. +0.1 0 18 0 1.7-0.1 18min. 15 19 +0.2 Ø16.2 0 +0.2 Ø16.2 0 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension 24 mm x 18 mm Part No. Wiring diagram Plug-in terminal 51-040.002 4 Soldering terminal 51-040.005 4 Terminal Diode 1N4007 Universal terminal Component Layout 51 51-041.006 3 27 1 51-701.006 1 27 2 51-702.006 2 27 56 57 Wiring diagrams b+ 3 b+ 45 3 1 b+ 61 x2+ 70 a- 2 Wiring diagram 1 a- 2 4 Wiring diagram 2 a- x1- 71 Wiring diagram 3 Wiring diagram 4 82 84 92 96 05/2020 § eao.com 647 51 Raised design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 56 57 61 70 71 82 84 92 96 648 ​ eao.com § 05/2020 Raised design 51 Indicator round, IP65 01 Equipment consisting of (schematic overview) 02 1.5 ... 6 Lens B Page 653 26 LED 03 A Page 660 C 10.5 23 32 04 3 09 Actuator Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm Product can differ from the current configuration. 14 Fixing nut 17 24min. 18x24 18 min. 18x18/ Ø18 Each Part Number listed below includes all the black components shown in the 3D-drawing. +0.1 0 18 0 To obtain a complete unit, please select the red components from the pages shown. 1.7-0.1 18min. 15 19 +0.2 Ø16.2 0 +0.2 Ø16.2 0 22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension Ø 18 mm Component Layout Part No. Wiring diagram Plug-in terminal 51-030.002 4 Soldering terminal 51-030.005 4 Universal terminal 51-031.006 3 27 1 51-741.006 1 27 2 51-742.006 2 27 Terminal Diode 1N4007 51 56 57 Wiring diagrams b+ 3 b+ 45 3 1 b+ 61 x2+ 70 a- 2 Wiring diagram 1 a- 2 4 Wiring diagram 2 a- x1- Wiring diagram 3 Wiring diagram 4 71 82 84 92 96 05/2020 § eao.com 649 51 Raised design Component layouts 02 D 18 mm x 24 mm Ø1.0 (6x) b 2 4 1 3 a b b 4 2 a b 2 4 2 C 1 3 b 2 4 4 2 a 1 3 1 3 b 4 2 C C a 17 a B 1 3 14 b C a b 2 4 09 a A 1 3 04 7.62 4 a 3 1 3 1 10.16 18 mm x 18 mm 10.16 Ø18 mm 5.08 03 5.08 01 Ø1.0 (6x) 7.62 18 Component layout 27 19 22 Dimensions [mm] A = Universal terminal (rear side) B = Plug-in terminal (rear side) C = Anti twist device D = Drilling plan 31 41 45 51 56 57 61 70 71 82 84 92 96 650 ​ eao.com § 05/2020 Raised design 51 Stop switch, IP65 01 Equipment consisting of (schematic overview) 1 ... 3 02 B 27.6 03 A Actuator C 19 Anti-twist ring Fixing nut Each Part Number listed below includes all the black components shown in the 3D-drawing. 04 18.8 26.3 24 3 Dimensions [mm] A = Solder terminal B = Plug-in terminal 2.8 mm x 0.5 mm C = Universal terminal 2.0 mm x 0.5 mm 09 Product can differ from the current configuration. 14 General information NJO 17 NJO



 • Marking arrows 18 19  
  ±  22 Mounting cut-outs [mm] 31 41 Actuator, Front dimension Ø 24,5 mm Contacts Terminal Lens colour Switching system Part No. Wiring diagram 2 NC Universal terminal Red Low-level element 51-252.026 292 Universal terminal Black Low-level element 51-252.0260 292 Universal terminal Yellow Low-level element 51-252.0264 292 Universal terminal Green Low-level element 51-252.0265 292 Universal terminal Blue Low-level element 51-252.0266 292 Universal terminal Grey Low-level element 51-252.0268 292 Plug-in terminal Red Snap-action switching element 51-253.022 289 Plug-in terminal Black Snap-action switching element 51-253.0220 289 Plug-in terminal Yellow Snap-action switching element 51-253.0224 289 Plug-in terminal Green Snap-action switching element 51-253.0225 289 Plug-in terminal Blue Snap-action switching element 51-253.0226 289 Plug-in terminal Grey Snap-action switching element 51-253.0228 289 Universal terminal Red Low-level element 51-253.026 293 Universal terminal Black Low-level element 51-253.0260 293 Universal terminal Yellow Low-level element 51-253.0264 293 Universal terminal Green Low-level element 51-253.0265 293 Universal terminal Blue Low-level element 51-253.0266 293 Universal terminal Grey Low-level element 51-253.0268 293 Soldering terminal Red Snap-action switching element 51-256.025 289 Soldering terminal Black Snap-action switching element 51-256.0250 289 Soldering terminal Yellow Snap-action switching element 51-256.0254 289 Soldering terminal Green Snap-action switching element 51-256.0255 289 Soldering terminal Blue Snap-action switching element 51-256.0256 289 Soldering terminal Grey Snap-action switching element 51-256.0258 289 Universal terminal Red Low-level element 51-256.026 291 Universal terminal Black Low-level element 51-256.0260 291 1 NC / 1 NO 1 NC 51 56 57 61 70 71 82 84 92 96 Contacts: NC = Normally closed, NO = Normally open 05/2020 § eao.com 45 651 51 Raised design 01 Contacts Terminal Lens colour Switching system Part No. Wiring diagram 1 NC Universal terminal Yellow Low-level element 51-256.0264 291 Universal terminal Green Low-level element 51-256.0265 291 Universal terminal Blue Low-level element 51-256.0266 291 Universal terminal Grey Low-level element 51-256.0268 291 Soldering terminal Red Snap-action switching element 51-259.025 290 Soldering terminal Black Snap-action switching element 51-259.0250 290 Soldering terminal Yellow Snap-action switching element 51-259.0254 290 Soldering terminal Green Snap-action switching element 51-259.0255 290 Soldering terminal Blue Snap-action switching element 51-259.0256 290 Soldering terminal Grey Snap-action switching element 51-259.0258 290 02 03 2 NC / 2 NO 04 09 14 Contacts: NC = Normally closed, NO = Normally open Wiring diagrams 17 1 3 1 I 3 1 I 3 1 1 3 1 3 4 2 2 4 2 4 II 18 2 19 22 Wiring diagram 289 4 2 Wiring diagram 290 4 2 Wiring diagram 291 Wiring diagram 292 Wiring diagram 293 31 41 45 51 56 57 61 70 71 82 84 92 96 652 ​ eao.com § 05/2020 Components 51 01 Lens square, raised design Product attributes Not recommended for film insert 02 Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No. Plastic Smokey black transparent flush illuminative 15,3 mm x 15,3 mm 51-953.1 Plastic Red transparent flush illuminative 15,3 mm x 15,3 mm 51-953.2 Plastic Orange transparent flush illuminative 15,3 mm x 15,3 mm 51-953.3 Plastic Yellow transparent flush illuminative 15,3 mm x 15,3 mm 51-953.4 Plastic Green transparent flush illuminative 15,3 mm x 15,3 mm 51-953.5 Plastic Blue transparent flush illuminative 15,3 mm x 15,3 mm 51-953.6 Plastic Colourless transparent flush illuminative 15,3 mm x 15,3 mm 51-953.7 Plastic Red translucent flush illuminative 15,3 mm x 15,3 mm 51-951.2 Plastic Orange translucent flush illuminative 15,3 mm x 15,3 mm 51-951.3 Plastic Yellow translucent flush illuminative 15,3 mm x 15,3 mm 51-951.4 Plastic Green translucent flush illuminative 15,3 mm x 15,3 mm 51-951.5 Plastic Blue translucent flush illuminative 15,3 mm x 15,3 mm 51-951.6 Plastic White translucent flush illuminative 15,3 mm x 15,3 mm 51-951.9 Plastic Black opaque flush non illuminative 15,3 mm x 15,3 mm 51-951.0 Plastic Grey opaque flush non illuminative 15,3 mm x 15,3 mm 51-951.8 Plastic Red transparent concave illuminative 15,3 mm x 15,3 mm 51-954.2 Plastic Orange transparent concave illuminative 15,3 mm x 15,3 mm 51-954.3 Plastic Yellow transparent concave illuminative 15,3 mm x 15,3 mm 51-954.4 Plastic Green transparent concave illuminative 15,3 mm x 15,3 mm 51-954.5 Plastic Blue transparent concave illuminative 15,3 mm x 15,3 mm 51-954.6 Plastic Colourless transparent concave illuminative 15,3 mm x 15,3 mm 51-954.7 03 04 09 14 17 18 19 22 31 41 45 51 EAO Downloads. www.eao.com/downloads 56 EAO creates possibilities. Since 1947. 57 61 70 71 On our website you can download technical data, assembly instructions, catalogs, brochures and much more. 82 84 92 www.eao.com 05/2020 § eao.com 96 653 51 Components 01 Lens rectangular, raised design 02 Product attributes 03 04 09 Not recommended for film insert 14 17 18 19 22 Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No. Plastic Smokey black transparent flush illuminative 15,3 mm x 21,5 mm 51-903.1 Plastic Red transparent flush illuminative 15,3 mm x 21,5 mm 51-903.2 Plastic Orange transparent flush illuminative 15,3 mm x 21,5 mm 51-903.3 Plastic Yellow transparent flush illuminative 15,3 mm x 21,5 mm 51-903.4 Plastic Green transparent flush illuminative 15,3 mm x 21,5 mm 51-903.5 Plastic Blue transparent flush illuminative 15,3 mm x 21,5 mm 51-903.6 Plastic Colourless transparent flush illuminative 15,3 mm x 21,5 mm 51-903.7 Plastic Red translucent flush illuminative 15,3 mm x 21,5 mm 51-901.2 Plastic Orange translucent flush illuminative 15,3 mm x 21,5 mm 51-901.3 Plastic Yellow translucent flush illuminative 15,3 mm x 21,5 mm 51-901.4 Plastic Green translucent flush illuminative 15,3 mm x 21,5 mm 51-901.5 Plastic Blue translucent flush illuminative 15,3 mm x 21,5 mm 51-901.6 Plastic White translucent flush illuminative 15,3 mm x 21,5 mm 51-901.9 Plastic Black opaque flush non illuminative 15,3 mm x 21,5 mm 51-901.0 Plastic Grey opaque flush non illuminative 15,3 mm x 21,5 mm 51-901.8 Plastic Red transparent concave illuminative 15,3 mm x 21,5 mm 51-904.2 Plastic Orange transparent concave illuminative 15,3 mm x 21,5 mm 51-904.3 Plastic Yellow transparent concave illuminative 15,3 mm x 21,5 mm 51-904.4 Plastic Green transparent concave illuminative 15,3 mm x 21,5 mm 51-904.5 Plastic Blue transparent concave illuminative 15,3 mm x 21,5 mm 51-904.6 Plastic Colourless transparent concave illuminative 15,3 mm x 21,5 mm 51-904.7 31 41 45 Lens round, raised design Product attributes 51 56 Not recommended for film insert 57 61 Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No. Plastic Smokey black transparent flush illuminative Ø 15,8 mm 51-933.1 Plastic Red transparent flush illuminative Ø 15,8 mm 51-933.2 Plastic Yellow transparent flush illuminative Ø 15,8 mm 51-933.4 Plastic Green transparent flush illuminative Ø 15,8 mm 51-933.5 Plastic Blue transparent flush illuminative Ø 15,8 mm 51-933.6 Plastic Colourless transparent flush illuminative Ø 15.8 mm 51-933.7 Plastic Red translucent flush illuminative Ø 15,8 mm 51-931.2 Plastic Yellow translucent flush illuminative Ø 15,8 mm 51-931.4 Plastic Blue translucent flush illuminative Ø 15,8 mm 51-931.6 Plastic White translucent flush illuminative Ø 15,8 mm 51-931.9 Plastic Black opaque flush non illuminative Ø 15,8 mm 51-931.0 Plastic Grey opaque flush non illuminative Ø 15,8 mm 51-931.8 70 71 82 84 92 96 654 eao.com § 05/2020 Components 51 01 02 Lens square, flush design Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No. Plastic Smokey black transparent flush illuminative 18 mm x 18 mm 61-9671.1 Red transparent flush illuminative 18 mm x 18 mm 61-9671.2 Orange transparent flush illuminative 18 mm x 18 mm 61-9671.3 Yellow transparent flush illuminative 18 mm x 18 mm 61-9671.4 Green transparent flush illuminative 18 mm x 18 mm 61-9671.5 Blue transparent flush illuminative 18 mm x 18 mm 61-9671.6 Colourless transparent flush illuminative 18 mm x 18 mm 61-9671.7 Black opaque flush non illuminative 18 mm x 18 mm 61-9771.0 White translucent flush non illuminative 18 mm x 18 mm 61-9771.9 03 04 09 14 17 18 Lens rectangular, flush design Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No. Plastic Smokey black transparent flush illuminative 18 mm x 24 mm 61-9681.1 Red transparent flush illuminative 18 mm x 24 mm 61-9681.2 Orange transparent flush illuminative 18 mm x 24 mm 61-9681.3 Yellow transparent flush illuminative 18 mm x 24 mm 61-9681.4 Green transparent flush illuminative 18 mm x 24 mm 61-9681.5 Blue transparent flush illuminative 18 mm x 24 mm 61-9681.6 Colourless transparent flush illuminative 18 mm x 24 mm 61-9681.7 Black opaque flush non illuminative 18 mm x 24 mm 61-9781.0 White translucent flush non illuminative 18 mm x 24 mm 61-9781.9 19 22 31 41 45 Lens round, flush design Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No. Plastic Smokey black transparent flush illuminative Ø 19,7 mm 61-9642.1 Red transparent flush illuminative Ø 19,7 mm 61-9642.2 Orange transparent flush illuminative Ø 19,7 mm 61-9642.3 Yellow transparent flush illuminative Ø 19,7 mm 61-9642.4 Green transparent flush illuminative Ø 19,7 mm 61-9642.5 Blue transparent flush illuminative Ø 19,7 mm 61-9642.6 Colourless transparent flush illuminative Ø 19,7 mm 61-9642.7 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com 655 51 Components 01 02 03 Lens plastic with symbol Lens material Lens colour Lens optics Lens shape Lens illumination Symbol Dimensions Part No. Plastic Red transparent flush illuminative Ring Ø 19,7 mm 61-9643.201 Orange transparent flush illuminative Ring Ø 19,7 mm 61-9643.301 Yellow transparent flush illuminative Ring Ø 19,7 mm 61-9643.401 Green transparent flush illuminative Ring Ø 19,7 mm 61-9643.501 Blue transparent flush illuminative Ring Ø 19,7 mm 61-9643.601 Colourless transparent flush illuminative Ring Ø 19,7 mm 61-9643.701 Red transparent flush illuminative ON/OFF Ø 19,7 mm 61-9643.202 Green transparent flush illuminative ON/OFF Ø 19,7 mm 61-9643.502 Blue transparent flush illuminative ON/OFF Ø 19,7 mm 61-9643.602 Colourless transparent flush illuminative ON/OFF Ø 19,7 mm 61-9643.702 Red transparent flush illuminative Standby Ø 19,7 mm 61-9643.203 Green transparent flush illuminative Standby Ø 19,7 mm 61-9643.503 Blue transparent flush illuminative Standby Ø 19,7 mm 61-9643.603 Colourless transparent flush illuminative Standby Ø 19,7 mm 61-9643.703 04 09 14 17 18 19 Additional information • The silvery coat is being applied on the lens (screen print) with an additional protective lacquer. Further information see Technical data 22 Lens metal 31 41 Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No. Aluminium Black opaque flush non illuminative Ø 19,7 mm 61-9841.0 45 51 56 57 Red opaque flush non illuminative Ø 19,7 mm 61-9841.2 Gold opaque flush non illuminative Ø 19,7 mm 61-9841.4 Olive green opaque flush non illuminative Ø 19,7 mm 61-9841.5 Blue opaque flush non illuminative Ø 19,7 mm 61-9841.6 Nature opaque flush non illuminative Ø 19,7 mm 61-9841.8 Black opaque convex non illuminative Ø 19,7 mm 61-9842.0 Red opaque convex non illuminative Ø 19,7 mm 61-9842.2 Olive green opaque convex non illuminative Ø 19,7 mm 61-9842.5 Nature opaque convex non illuminative Ø 19,7 mm 61-9842.8 Additional information • The colour of anodised aluminium parts can vary due to technical production reasons 61 70 71 Lens metal with spot Lens material Lens colour Lens optics Lens shape Lens illumination Dimensions Part No. Aluminium Black opaque flush illuminative Ø 19,7 mm 61-9841.0A 82 84 92 Red opaque flush illuminative Ø 19,7 mm 61-9841.2A Gold opaque flush illuminative Ø 19,7 mm 61-9841.4A Olive green opaque flush illuminative Ø 19,7 mm 61-9841.5A Blue opaque flush illuminative Ø 19,7 mm 61-9841.6A Nature opaque flush illuminative Ø 19,7 mm 61-9841.8A Additional information • The colour of anodised aluminium parts can vary due to technical production reasons 96 656 eao.com § 05/2020 Components 51 01 Mushroom-head cap 02 Lens material Lens colour Lens optics Lens shape Lens illumination Part No. Plastic Black opaque flush non illuminative 61-9593.0 Red opaque flush non illuminative 61-9593.2 03 04 09 Lever raised design Lever material Lever colour Lever illumination Lever bar colour Lever shape Part No. plastic Black illuminative Red short 52-928.20 Black illuminative Orange short 52-928.30 Black illuminative Yellow short 52-928.40 Black illuminative Green short 52-928.50 Black illuminative Blue short 52-928.60 Grey illuminative Red short 52-929.20 Grey illuminative Orange short 52-929.30 Grey illuminative Yellow short 52-929.40 Grey illuminative Green short 52-929.50 Grey illuminative Blue short 52-929.60 Black non illuminative Black short 52-928.0 Black non illuminative White short 52-928.9 Grey non illuminative Grey short 52-929.8 Grey non illuminative White short 52-929.9 14 17 18 19 22 31 Additional information 41 • With bar and marking dot 45 51 Lever flush design Lever material Lever colour Lever illumination Lever bar colour Part No. plastic Black illuminative Red 61-9028.20 Black illuminative Yellow 61-9028.40 Black illuminative Green 61-9028.50 Black illuminative Blue 61-9028.60 Grey illuminative Red 61-9029.20 Grey illuminative Orange 61-9029.30 Grey illuminative Yellow 61-9029.40 Black illuminative White 61-9028.9 Black non illuminative Black 61-9028.0 Grey non illuminative Grey 61-9029.8 56 57 61 70 71 Additional information • With bar and marking dot 82 84 92 96 05/2020 § eao.com 657 51 Components 01 02 03 Marking plate Marking plate material Marking plate colour Marking plate optics Marking plate illumination Part No. Plastic Colourless transparent illuminative 61-9707.7 Additional information 04 • Can be hot stamped 09 14 17 Front bezel set flush design Product attributes For indicator illuminated pushbutton and keylock switch 18 19 For indicator, illuminated pushbutton, mushroom-head pushbutton and keylock switch 22 31 For selector switch 41 45 51 56 Front bezel material Front bezel colour Plastic Plastic Front bezel surface Mounting cutout Dimensions Black 21 mm x 21 mm 24 mm x 24 mm 61-9930.0 Silver 21 mm x 21 mm 24 mm x 24 mm 61-9930.4 Part No. Plastic Black 21 mm x 27 mm 24 mm x 30 mm 61-9931.0 Plastic Silver 21 mm x 27 mm 24 mm x 30 mm 61-9931.4 Aluminium Nature anodised Ø 22.3 mm Ø 25 mm 61-9933.0 Aluminium Black anodised Ø 22.3 mm Ø 25 mm 61-9933.1 Aluminium Red anodised Ø 22.3 mm Ø 25 mm 61-9933.2 Aluminium Gold anodised Ø 22.3 mm Ø 25 mm 61-9933.4 Aluminium Olive anodised Ø 22.3 mm Ø 25 mm 61-9933.5 Aluminium Blue anodised Ø 22.3 mm Ø 25 mm 61-9933.6 Plastic Black Ø 22.3 mm Ø 25 mm 61-9933.10 Aluminium Nature anodised Ø 22.3 mm Ø 25 mm 61-9932.0 Aluminium Black anodised Ø 22.3 mm Ø 25 mm 61-9932.1 Aluminium Red anodised Ø 22.3 mm Ø 25 mm 61-9932.2 Aluminium Gold anodised Ø 22.3 mm Ø 25 mm 61-9932.4 Aluminium Olive anodised Ø 22.3 mm Ø 25 mm 61-9932.5 Aluminium Blue anodised Ø 22.3 mm Ø 25 mm 61-9932.6 Plastic Black anodised Ø 22.3 mm Ø 25 mm 61-9932.10 Plastic Black 21 mm x 21 mm 24 mm x 24 mm 61-9936.0 Additional information • Pitch of the front plate mounting holes must agree with the printed circuit board holes Ø 3.5 mm • The colour of anodised aluminium parts can vary due to technical production reasons 57 61 70 Front bezel Lever switch 71 Front bezel material Front bezel colour Dimensions Part No. Plastic Black 24 mm x 24 mm 52-950.0 Black 26 mm x 26 mm 52-952.0 82 84 92 96 658 eao.com § 05/2020 Components 51 01 Front bezel set mushroom head pushbutton Front bezel material Front bezel colour Front bezel type Dimensions Part No. Aluminium Nature flush Ø 40 mm 61-9934.8 02 03 Additional information • The colour of anodised aluminium parts can vary due to technical production reasons 04 09 14 Anti-twist ring Material Mounting cut-out Part No. metal Ø 16.2 mm 51-910 Ø 22.3 mm 61-9912.0 17 18 19 22 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com 659 51 Components 01 Single-LED, T1 3/4 MG 02 03 Illumination colour Operating voltage Operation current Lumi. Intensity Dom. Wavelength Part No. Wiring diagram Red 6 V DC +10% 15 mA ±15 % 350 mcd 630 nm 10-2J06.3142 55 12 V AC/DC +10% 7 - 14 mA ±15 % 330 mcd 630 nm 10-2J09.1062 55 24 V AC/DC +10% 7 - 14 mA ±15 % 330 mcd 630 nm 10-2J12.1062 55 28 V AC/DC +10% 7 - 14 mA ±15 % 330 mcd 630 nm 10-2J13.1062 55 48 V AC/DC +10% 4 - 8 mA ±15 % 200 mcd 630 nm 10-2J19.1042 55 6 V DC +10% 15 mA ±15 % 300 mcd 587 nm 10-2J06.3144 55 12 V AC/DC +10% 7 - 14 mA ±15 % 280 mcd 587 nm 10-2J09.1064 55 24 V AC/DC +10% 7 - 14 mA ±15 % 280 mcd 587 nm 10-2J12.1064 55 28 V AC/DC +10% 7 - 14 mA ±15 % 280 mcd 587 nm 10-2J13.1064 55 48 V AC/DC +10% 4 - 8 mA ±15 % 180 mcd 587 nm 10-2J19.1044 55 6 V DC +10% 7 mA ±15 % 1050 mcd 525 nm 10-2J06.3145 55 12 V AC/DC +10% 4 - 7 mA ±15 % 1050 mcd 525 nm 10-2J09.1065 55 24 V AC/DC +10% 4 - 7 mA ±15 % 1050 mcd 525 nm 10-2J12.1065 55 28 V AC/DC +10% 4 - 7 mA ±15 % 1050 mcd 525 nm 10-2J13.1065 55 48 V AC/DC +10% 2 - 4 mA ±15 % 600 mcd 525 nm 10-2J19.1045 55 6 V DC +10% 15 mA ±15 % 680 mcd 470 nm 10-2J06.3146 55 12 V AC/DC +10% 4 - 14 mA ±15 % 650 mcd 470 nm 10-2J09.1066 55 24 V AC/DC +10% 7 - 14 mA ±15 % 650 mcd 470 nm 10-2J12.1066 55 28 V AC/DC +10% 7 - 14 mA ±15 % 650 mcd 470 nm 10-2J13.1066 55 48 V AC/DC +10% 4 - 8 mA ±15 % 400 mcd 470 nm 10-2J19.1046 55 6 V DC +10% 6 mA ±15 % 900 mcd x: 0.31 / y: 0.32 nm 10-2J06.3149 55 12 V AC/DC +10% 3 - 6 mA ±15 % 900 mcd x: 0.31 / y: 0.32 nm 10-2J09.1069 55 24 V AC/DC +10% 2,5 - 5 mA ±15 % 750 mcd x: 0.31 / y: 0.32 nm 10-2J12.1069 55 28 V AC/DC +10% 2,5 - 5 mA ±15 % 750 mcd x: 0.31 / y: 0.32 nm 10-2J13.1069 55 48 V AC/DC +10% 2 - 4 mA ±15 % 600 mcd x: 0.31 / y: 0.32 nm 10-2J19.1049 55 24 V AC/DC +10% 15/14 mA ±15 % 600/630 mcd 625 / 525 nm 10-A312.314A 171 04 Yellow 09 14 Green 17 18 Blue 19 22 White 31 41 Red / Green Additional information 45 • Due to high surface temperatures, the series resistor must not be soldered directly to the terminals of the equipment (use a terminal plate) • When using AC/DC types with AC operation, slight flickering can occur 51 • The luminous intensity stated is for when used with DC • Electrical and optical data are measured at 25 °C 56 57 • The specified versions are built with a protection diode (halve wave rectifier) in series and the LED • Luminosity and wave length variations caused by LED manufacturing processes may cause slight differences regarding the illumination. The customer has to decide what resistor shall be used to the LED • Where supply voltages are over 48 V, a voltage-reduction element (external protective series resistor) must be used. 61 70 71 Ø6.1 max. 16 max. 82 84 92 Dimensions [mm] 96 660 eao.com § 05/2020 Components 51 Wiring diagrams x2+ 01 x2+ 02 03 x1x1- Wiring diagram 55 04 Wiring diagram 171 09 14 Filament lamp Operating voltage Operation current Part No. Wiring diagram 12 V AC/DC 75 mA ±10 % 10-1309.1309 4 14 V AC/DC 80 mA ±10 % 10-1310.1319 4 24 V AC/DC 35 mA ±10 % 10-1312.1229 4 28 V AC/DC 40 mA ±10 % 10-1313.1249 4 36 V AC/DC 30 mA ±10 % 10-1316.1209 4 48 V AC/DC 25 mA ±10 % 10-1319.1199 4 17 18 19 22 Wiring diagrams 31 x2+ 41 x1- 45 Wiring diagram 4 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com 661 51 Accessories 01 Front side 02 03 04 Legend frame 09 Dimensions Material Colour Surface Mounting type Part No. 30 mm x 50 mm aluminium Black anodised adhesive 61-9980.0 14 Additional information • For devices with front dimension Ø 25 mm, flush design • The colour of anodised aluminium parts can vary due to technical production reasons 18 4 23.5 Ø25 35 ± 0.3 50 ± 0.3 19 14.5 17 22 0 30 -0.1 31 Dimensions [mm] 41 45 Legend plate 51 56 57 61 Dimensions Material Colour Surface Mounting type Part No. 14.5 mm x 23.5 mm aluminium Nature anodised adhesive 704.968.0 aluminium Black anodised adhesive 704.968.1 Additional information • For legend frame Part No.704.968.2 and 704.968.3 • The colour of anodised aluminium parts can vary due to technical production reasons 70 71 82 84 Blind plug raised design Dimensions Material Colour Mounting cut-out Part No. 18 mm x 24 mm plastic Black Ø 16.2 mm 51-947.0 18 mm x 18 mm plastic Black Ø 16.2 mm 51-948.0 Ø 18 mm plastic Black Ø 16.2 mm 51-949.0 Additional information 92 • Blind plugs fit also in mounting cut-outs with anti-twist device 96 662 eao.com § 05/2020 Accessories 51 01 02 Blind plug flush design Dimensions Material Colour Mounting cut-out Part No. 24 mm x 24 mm plastic Black 21 mm x 21 mm 61-9451.0 24 mm x 30 mm plastic Black 21 mm x 27 mm 61-9452.0 Ø 25 mm plastic Black Ø 25 mm 61-9453.0 03 04 Additional information • Please note that bigger minimum distances are necessary  09 

 17  ±  14 18 

 19 Dimensions [mm] for Part No. 61-9453.0 22 EMC key protection cap Product attributes Material Colour Part No. For standard lock: DOM plastic Black 31-985.0 31 41 45 Spare key Product attributes Material Part No. Standard lock: DOM 311 metal 31-989.311 51 Additional information 56 • Optional lock numbers on request 57 Master key 61 Product attributes Material Part No. For standard lock: DOM 311 … 445 metal 31-989.300 70 71 82 84 92 96 05/2020 § eao.com 663 51 Accessories 01 Protective cover raised design 02 Dimensions Material Colour Optics Part No. 18 mm x 18 mm plastic Colourless transparent 51-920 18 mm x 24 mm plastic Colourless transparent 51-925 04 20 14 24 14.5 25.5 23.5 25.5 09 32 23.5 10.5 32 10.5 03 Product attributes Hinged, with means for sealing 14.5 17 Dimensions [mm] Dimensions [mm] 18 19 22 31 41 Protective cover flush design Product attributes Dimensions Material Colour Optics Mounting cut-out Part No. Hinged, with means for sealing, for device with front dimension 24 mm x 24 mm 24 mm x 24 mm plastic Colourless transparent 21 mm x 21 mm 61-9921.0 Hinged, with means for sealing, for device with front dimension 24 mm x 30 mm 30 mm x 24 mm plastic Colourless transparent 27 mm x 21 mm 61-9922.0 Slide by side, without cover locking hole, for device with front dimension Ø 25 mm Ø 25 mm plastic Colourless transparent Ø 22.3 mm 61-9924.0 5.5 max. 45 12 25 51 56 24 4.5 5.5 max. 57 24 12 25 61 30 70 4.5 10 29.3 71 1.5 min. 5.5 max. 42 82 84 92 24 Ø 25 Dimensions [mm] 96 664 eao.com § 05/2020 Accessories 51 Rear side 01 02 Flat receptacle Product attributes Material Part No. 2.0 x 0.5 mm plug-in terminal metal 31-945 2.8 x 0.5 mm plug-in terminal metal 31-946 2.8 x 0.5 mm in combination with multi-plug housing metal 51-943.1 03 04 09 14 Insulation sleeve Product attributes Material Part No. For flat receptacle 2.0 mm plastic 31-928 For flat receptacle 2.8 mm plastic 31-929 Cover plug-in terminals for snap-action switching element 2.8 mm plastic 01-928 17 18 19 Terminal cover Product attributes Material Part No. For snap-action switching element plastic 01-929 22 31 Side terminal plate empty 41 Product attributes Dimensions Part No. 5 spaces 62.5 mm x 15 mm x 60 mm 02-912.1 10 spaces 125 mm x 15 mm x 60 mm 02-912.2 15 spaces 187.6 mm x 15 mm x 60 mm 02-912.3 20 spaces 250 mm x 15 mm x 60 mm 02-912.4 45 51 56 Multi-plug housing 57 Product attributes Part No. For switching block 51-943.0 61 70 71 82 84 92 96 05/2020 § eao.com 665 51 Accessories 01 PCB plug-in base 02 03 04 Component Layout Product attributes Terminal Pins Part No. For low level switching element PCB terminal Axial 31-940 3 PCB terminal 90° angled 31-941 2 PCB terminal Axial 31-942 4 For snap-action switching element 2.8 mm Additional information 09 • PCB plug-in base pins right-angle: With the extendable mounting the distance between plug-in base and PCB can be varied up to 3 mm 14 9.8 1.5 9.6 3 4 9.8 2 18 4 Ø16.4 6.2 17.8 17.9 17 17.9 12.9 4 19 22 31 Dimensions [mm] for Part No. 31-940 Dimensions [mm] for Part No. 31-941 Dimensions [mm] for Part No. 31-942 Component layouts 41 A 45 9.6 B C 17.9 17.9 51 3 4 57 a 24 9 42 b 17.9 31 a 9 b 17.9 31 56 b F 61 4 3 1 2 a b 2 3 1 4 a D Ø1.0 (4x) 96 1.27 1.27 5 x 2.54 1.27 1.27 0.85 82 92 Ø1.0 (6x) E 71 84 15.24 7.62 70 Component layout 2 Dimensions [mm] A = Socket 90° angled B = Occupancy plan (component side) C = Occupancy plan diode block D = Drilling plan (component side) E = non-metallic F = Extendable mounting pins 666 eao.com § 05/2020 Accessories 51 Component layouts 01 02 A B C 03 7.62 Ø1.0 (1x) Ø2.1 (1x) 1 Ø2.1 (1x) D 2 4 a 12.7 b E 3 1 5.08 2 3 5.08 4 10.16 b E Ø1.0 (6x) 09 10.16 Ø1.0 (1x) 04 7.62 Ø1.0 (6x) 14 a 12.7 17 D Component layout 3 18 Dimensions [mm] A = Axial socket B = Drilling-/occupancy plan (component side) C = Drilling-/occupancy plan diode block D = for central mounting with M2 screw, if desired E = non-metallic 19 22 A B 31 7.62 41 Ø1.0 C 45 3 4 1 10.16 2 7.62 7.62 b 51 a Ø1.0 (6x) Ø2.1 56 D Component layout 4 57 Dimensions [mm] A = Axial socket B = Drilling-/occupancy plan (component side) C = non-metallic D = for central mounting with M2 screw, if desired 61 70 Series resistor Operating voltage Resistance Part No. 110 V AC 2.7 kOhm 02-904.0 125 V AC 3.3 kOhm 02-904.1 145 V AC 4.7 kOhm 02-904.3 240 V AC 10 kOhm 02-904.7 71 82 84 Additional information • Only for filament lamp 48 VAC, 25 mA 92 • Due to high surface temperatures, the series resistor must not be soldered directly to the terminals of the equipment (use a terminal plate) • Keep to the country specific safety instructions 05/2020 § eao.com 96 667 51 Accessories 01 Mounting 02 03 04 Fixing nut Product attributes Dimensions Material Colour Part No. Special recommended for keylock switches Ø 16 mm metal Silver 31-991 plastic Black 51-991 Standard delivery 09 14 17 Mounting tool Product attributes Dimensions Material Part No. For tightening or loosening of the fixing nut Ø 16 mm Ø 16 mm metal 01-907 18 19 Dismantling tool Product attributes Part No. For dismantling of lens, lens holder and switching element block 51-938 22 Lens remover 31 41 Product attributes Material Part No. For raised design metal 02-905 For flush design metal / plastic 61-9730.0 Product attributes Material Part No. A switching action may occur when replacing the lamp plastic 61-9740.0 45 Lamp remover 51 56 57 61 70 71 82 84 92 96 668 eao.com § 05/2020 Technical data 51 Actuator with snap-action switching element block (Keylock- and Selector switch 3 positions) Switching system Electrical characteristics Self-cleaning, double-break snap action switching system 2 normally closed and 2 normally open contact per element. Electrostatic discharge (ESD) 01 02 03 ≤ 15 KV (Keylock switch) Thermal current Ith 04 Material 5A Material of contact Switching voltage and switching current Gold plated hardsilver 250 VAC, 5 A (cosφ 0.75) Switch housing Electric strength Plastic, heat-resistant and self-extinguishing 2500 VAC, 50 Hz, 1 min. between all terminals and earth, as per IEC 60512-2-11 09 14 17 Actuator housing Plastic, self-extinguishing Protection class II 18 Ambient conditions 19 Mechanical characteristics Terminals Soldering terminal which can also be used as plug-in terminal 2.8 x 0.5 mm Max. wire diameter 2 wires of 1 mm Max. wire cross-section of stranded cable 2 x 0.75 mm² Storage temperature 22 – 40 °C … + 85 °C Operating temperature For fixing nut max. 0.5 Nm – 25 °C … + 55 °C For selector switches mounted as a block, make sure the heat can escape freely Actuating torque Protection degree 0.025 Nm … 0.055 Nm, depending on the number of switching elements. Measured at the key or lever of the keylock- or selector switch. Front side, as per IEC 60529 IP65 keylock switch IP65 selector switch Tightening torque Mechanical lifetime Keylock switch Selector switch 50 000 cycles of operation 100 000 cycles of operation 41 45 51 Actuating travel Keylock-/selector switch actuator with 3 positions 2 x ca. 42° deflection momentary action 2 x ca. 90° deflection maintained action 31 Approvals 56 Approbations 57 CB (IEC 61058-1) CSA CQC ENEC (EN 61058-1) DNV GL (previously Germanischer Lloyd) UL 61 70 Conformities 71 CE 2014 / 30 / EC (EMC) 2014 / 35 / EC (LVD) 2011 / 65 / EC (RoHS) 82 84 92 96 05/2020 § eao.com ​ 669 51 Technical data 01 02 03 04 09 14 17 Actuator with low-level switching element Switching system This low-level switching element was designed for switching low powers in electronic circuits. The mechanism assures reliable switching of loads ranging from a few μA/μV up to 100 mA/ 42 VAC/ DC. Actuating travel Illuminated pushbutton 3 mm Keylock-/selector switch actuator 2 positions 1 x ca. 42° deflection momentary action 1 x ca. 90° deflection maintained action Mechanical lifetime Single-break momentary contact, as normally open or normally closed with 4 independent points of contact. 2 momentary contacts per switching element; combination of normally open and normally closed is possible. Momentary action Maintained action Keylock switch 5 million cycles of operation 1 million cycles of operation 50 000 cycles of operation Special features are the long life, extremely short rebound time and stable contact resistance. Electrical characteristics Electrostatic breakdown value ≤ 15 KV (Keylock switch) 18 19 Material Switching voltage and switching current Material of contact 100 mA at 42 VAC/VDC Gold plated Electric strength 22 Switch housing 31 Actuator housing Plastic, heat-resistant and self-extinguishing Plastic, self-extinguishing 41 45 51 56 57 61 70 2500 VAC, 50 Hz, 1 minute between all terminals and earth, as per IEC 61058-1, part 15 Ambient conditions Storage temperature Mechanical characteristics -40 °C … +85 °C Terminals Operating temperature The universal terminals permit these units to be mounted on printed circuit boards (PCB). These terminals can also be used as soldering or plug-in terminals. -25 °C … +55 °C For indicators and illuminated pushbuttons mounted as a block, make sure the heat can escape freely. For these terminals we can also supply a plug-in base which, when soldered on to the board, enables the switch to be plugged in. Protection degree Soldering terminal Max. wire diameter 2 wires à 1 mm Max. wire cross-section of stranded cable 2 x 0.75 mm² Shock resistance IP65 front side, as per DIN / EN 60529 (Single impacts, semi-sinusoidal) 15 g for 11 ms, as per DIN / EN 60512-4-3, DIN / EN 60068-2-27 Plug-in terminal 2.0 mm x 0.5 mm Tightening torque 71 For fixing nut max. 0.5 Nm Actuating torque 82 2.5 Ncm … 5.5 Ncm, measured at the key or lever of the keylock- or selector switch 84 Actuating force 1.8 N … 3.5 N 92 96 670 ​ eao.com § 05/2020 Technical data 51 Actuator with snap-action switching element Switching system Self-cleaning, double-break snap action switching system (with contact gap 2 x 0.5 mm). 1 normally closed and 1 normally open contact per element. Snap-action switching elements with soldering terminals at the sides: up to 4 switching element can be on a pushbutton (max. 4 normally closed and 4 normally open contacts). 01 Actuating travel Illuminated pushbutton 3 mm 02 Keylock-/selector switch actuator 2 positions 1 x ca. 42° deflection momentary action 1 x ca. 90° deflection maintained action 03 04 Mechanical lifetime Momentary action Maintained action Keylock switch 2 million cycles of operation 1 million cycles of operation 50 000 cycles of operation 09 Snap-action switching element with axial plug-in terminals 2.8 mm is not stackable, only 1 switching element can be on a pushbutton. 14 Electrical characteristics Material 17 Standards EN / IEC 61058-1 18 Material of contact Gold plated silver Rated voltage 250 VAC / VDC 19 Switch housing Axial soldering-/plug-in terminal 2.8 mm Plastic, heat-resistant and self-extinguishing. Rated current Soldering terminal: Plastic Electrostatic discharge (ESD) 5A 22 31 ≤ 15 KV (Keylock switch) Actuator housing Plastic, self-extinguishing Thermal current Ith Mechanical characteristics 5A The maximum current in continuous operation and at ambient temperature not exceeding the quoted maximum values. Terminals Switching voltage and switching current Snap-action switching element with tinned soldering terminals at the sides Max. wire diameter 2 wires à 1.2 mm Max. wire cross-section of stranded cable 1 x 1 mm² 250 VAC, 5 A (ohmic) 250 VAC, 2 A (inductive, cos(phi) = 0.7) 125 VAC, 3 A (inductive, cos(phi) = 0.7) 220 VDC, 0.1 A (inductive, L:R = 30 ms) 110 VDC, 0.2 A (inductive, L:R = 30 ms) 60 VDC, 0.7 A (inductive, L:R = 30 ms) 24 VDC, 2 A (inductive, L:R = 30 ms) 51 Electric strength 61 Snap-action switching element with axial soldering terminals, which can also be used as plug-in terminals 2.8 x 0.5 mm Max. wire diameter 2 wires of 1 mm Max. wire cross-section of stranded cable 2 of 0.75 mm² or 1 x 1.0 mm² 41 45 56 57 2500 VAC, 50 Hz, 1 minute between all terminals and earth, as per IEC 61058-1, part 15 70 Tightening torque For fixing nut max. 0.5 Nm Protection class II 71 Actuating torque 0.025 Nm … 0.055 Nm, depending on the number of switching elements. Measured at the key or lever of the keylock- or selector switch. Electrical lifetime 50 000 cycles of operation 82 84 Actuating force 1.8 N … 6 N, depending on the number of switching elements 92 96 05/2020 § eao.com ​ 671 51 Technical data 01 02 03 04 09 14 17 18 19 22 31 41 45 51 Ambient conditions Approvals Storage temperature Approbations – 40 °C … + 85 °C – 25 °C … + 55 °C For indicators and illuminated pushbuttons mounted as a block, make sure the heat can escape freely. CB (IEC 61058-1) CSA CQC ENEC (EN 61058-1) DNV GL (previously Germanischer Lloyd) UL Protection degree Conformities IP65 front side, as per DIN EN 60529 CE 2014 / 30 / EC (EMC) 2014 / 35 / EC (LVD) 2011 / 65 / EC (RoHS) Service temperature Shock resistance (Single impacts, semi-sinusoidal) 15 g for 11 ms, as per DIN EN 60512-4-3, DIN EN 60068-2-27 Vibration resistance (Sinusoidal) 10 g at 10 Hz … 1500 Hz, amplitude 0.75 mm, as per DIN EN 60512-4-4, DIN EN 60068-2-6 Climate resistance Standard condition, as per DIN EN 60068-2-30 Changing condition, as per DIN EN 60068-2-14 Stop Switch Switching system Label Plastic Switching element SE16 with solder terminal Self-cleaning, double-break snap-action switching system 1 NC contact and 1 NO contact per switching element. Available with up to two switching elements (2 NC contact and 2 NO contact) 56 Switching element Solder terminal Polyamide (PA 6.6) Solder-/plug-in interminal Diallyl Phthalate (DAP), Polyamide (PA), Polysulfone (PSU) Universal terminal Polysulfone (PSU) Switching element SE 2.8 mm with solder-/ plug-in terminal 57 61 Self-cleaning, double-break snap-action switching system (1 NC contact and 1 NO contact) Low-level switching element with universal terminal 82 84 92 Snap action solder terminal Snap action plug-in/solder terminal Low-level plug-in/solder/PCB terminal gold-plated silver gold-plated silver gold-plated Single-break momentary contact switch system. Two contacts per switching element with a combination of NC and NO contacts 70 71 Contact material Mechanical characteristics Material Terminals Actuator housing Plastic Plug-in terminal, 2.8 mm × 0.5 mm Universal terminal with 2.0 × 0.5 mm Solder and PCB terminal Lens Tightening torque Plastic For fixing nut max. 0.5 Nm Actuator Actuating force Plastic 18 … 21 N (depending on the switching element) 96 672 ​ eao.com § 05/2020 Technical data 51 Approvals Mechanical lifetime 01 100 000 cycles of operation Approbations Electrical characteristics Switching voltage and switching current Solder terminal Plug-in terminal Universal terminal 250 VAC, 5 A (ohmic) 24 VDC, 2 A (inductive, L:R = 30 ms) 250 VAC, 5 A (ohmic) 24 VDC, 2 A (inductive, L:R = 30 ms) 42 VAC / DC, 100 mA Ambient conditions UL CSA CB (IEC 61058-1) ENEC (EN 61058-1) 02 03 Conformities 04 CE 2006 / 42 / EC (MD) 2011 / 65 / EC (RoHS) 09 Approvals are not valid for Stop switches with low-level switching element. Storage temperature 14 17 – 40 °C … + 85 °C Operating temperature 18 – 25 °C … + 55 °C 19 Protection degree IP65 front side 22 EAO reserves the right to alter specifications without further notice. 31 41 45 51 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 673 51 Marking 01 02 03 04 General notes 1. Engraving 3. Film inserts In addition to the most commonly used world languages, in DIN1451-3 close spacing, other typefaces are available as Scandinavian, Slavic, Greek, Russian and Polish. Red, blue and black lenses are filled with white colour. Other colour lenses are filled in black. Standard height of letters is 2 mm. If the height is not specified, we will supply 2 mm engraved letters. Instead of using engraving the lenses can be fitted with transparent film inserts, as an alternative. For this purpose, though, it is advisible to use transparent lenses. In the case of use of a smoke-black lens the fitted film becomes readable only if the lamp is on. The film thickness is 0.2 mm. Important: Consider pushbutton mounting orientation befor specifying 09 engraving characters! 2. Hot stamping 14 For larger series it is worth considering markings by means of hot stamping. We will pleased to advise you. For letters and figures, typefaces with 2.5 mm, 3 mm and 4 mm are available. 17 Lenses for indicators and illuminated pushbuttons, raised mounting 18 19 All dimensions in mm Number of capital Number of small letters per line letters per line Front size (Lens) Film insert max. size Height of letters h Number of lines (target value) (target value) Image 18 x 24 (12.8 x 18.8) 12.7 x 18.7 2.5 3 9 10 B1 22 3 3 8 8 B1 4 2 5 6 B1 31 5 2 4 5 B1 6 1 4 4 B1 41 8 1 3 3 B1 2.5 5 6 7 B2 3 4 5 6 B2 45 51 56 18 x 18 (12.8 x 12.8) 12.7 x 12.7 4 3 4 4 B2 5 3 3 3 B2 6 2 2 3 B2 8 1 2 2 B2 2.5 3 6 7 B3 3 3 5 6 B3 57 4 2 4 4 B3 5 2 3 3 B3 6 1 2 3 B3 61 8 1 2 2 B3 2.5 3 4-5 5-6 B4 Ø 18 (Ø 15.8) Ø 12.8 70 71 82 Gravur 3 3 2-4 3-5 B4 4 2 2-3 3-4 B4 5 2 1-2 2-3 B4 6 1 2 3 B4 8 1 2 2 B4 B1 B2 B3 B4 AB abc AB abc AB abc AB abc 84 92 h Film 96 674 ​ eao.com § 05/2020 Marking 51 Lenses for indicators and illuminated pushbuttons, raised mounting 01 All dimensions in mm Number of capital Number of small 02 letters per line letters per line Front size (Lens) Film insert max. size Height of letters h Number of lines (target value) (target value) Image 18 x 24 (12.8 x 18.8) 15.1 x 21 2.5 4 10 11 B1 18 x 18 (12.8 x 12.8) Ø 18 (Ø 15.8) 15.1 x 15.1 Ø 15.6 Gravur 3 3 8 9 B1 4 2 6 7 B1 5 2 5 6 B1 6 1 4 5 B1 8 1 3 3 B1 2.5 5 7 8 B2 3 4 6 7 B2 4 3 5 5 B2 5 3 4 4 B2 6 2 3 3 B2 8 2 2 2 B2 2.5 4 7 8 B3 3 3 6 7 B3 4 2 5 5 B3 5 2 4 4 B3 6 1 3 3 B3 8 1 2 2 B3 2.5 3 6-7 6-8 B4 3 3 4-6 5-7 B4 4 2 4 4-5 B4 5 2 2-3 3 B4 6 1 2 2-3 B4 8 1 2 2-3 B4 B1 B2 B3 B4 AB abc AB abc AB abc AB abc 03 04 09 14 17 18 19 22 31 41 45 51 h Film 56 57 61 70 71 82 84 92 96 05/2020 § eao.com ​ 675 51 Application guidelines 01 02 03 04 09 14 Suppressor circuits When switching inductive loads such as relays, DC motors, and DC solenoids, it is always important to absorb surges (e. g. with a diode) to protect the contacts. When these inductive loads are switched off, a counter emf can severely damage switch contacts and greatly shorten lifetime. Fig. 1 shows an inductive load with a free-wheeling diode connected in parallel. This free-wheeling diode provides a path for the inductor current to flow when the current is interrupted by the switch. Without this free-wheeling diode, the voltage across the coil will be limited only by dielectric breakdown voltages of the circuit or parasitic elements of the coil. This voltage can be kilo- 17 To get an efficient protection, the free-wheeling diode must be connected as close as possible to the inductive load! Switch 19 22 The free-wheeling diode should be chosen so that the reverse breakdown voltage is greater than the voltage driving the inductive load. The DC blocking voltage (VR) of the free-wheeling diode can be found in the datasheet of a diode. The forward current should be equal or greater than the maximum current flowing through the load. Counter EMF over load without free-wheeling diode Fig. 2 Switching with inductive load Fig. 1 18 volts in amplitude even when nominal circuit voltages are low (e. g. 12 VDC) see Fig. 2. ON OFF 0 VDC + _ Free-wheeling diode 31 Inductive load Several hundred to several thousend volts di __ e = L dt 41 45 51 56 57 61 70 71 82 84 92 96 676 ​ eao.com § 05/2020