3LD2144-1TL51

Data sheet 3LD2144-1TL51 SENTRON, Switch disconnector 3LD, main switch, 4-pole, Iu: 25 A, Operating power / at AC-23 A at 400 V: 9.5 kW, floor mounting with door coupling, rotary operating mechanism, black, central mounting 22.5 mm of the handle Model product brand name SENTRON product designation 3LD Switch disconnector design of the product Main switch display version / for switch position indicator manual operation 1 ON - 0 OFF design of the actuating element Short rotary knob design of handle rotary operating mechanism, black type of the driving mechanism / motor drive No General technical data number of poles 4 type of device fixed mounting type of switch Floor mounting with door coupling size of switch disconnector 2 mechanical service life (switching cycles) / typical 100 000 electrical endurance (switching cycles) ● at AC-23 A / at 690 V 6 000 I2t value / with closed switch / at 690 V / for combination switch + gG fuse / maximum 4 kA2.s let-through I2t value / with closed switch / at 440 V / for combination switch + gG fuse / maximum 4 kA2.s operating frequency / maximum 50 1/h Voltage insulation voltage / rated value 690 V surge voltage resistance / rated value 6 kV operational current / at AC / rated value 25 A Protection class protection class IP IP65 degree of protection NEMA rating 1, 3R, 4X, 12 protection class IP / on the front IP65 Dissipation power loss [W] ● for rated value of the current / at AC / in hot operating state / per pole 1.1 W ● per conductor / typical 1.1 W Current operational current ● at AC-23 A / at 400 V / rated value 3LD21441TL51 Page 1/2 20 A 12.21.2020 Subject to change without notice © Copyright Siemens ● at AC-21 / at 690 V / rated value 25 A ● at AC-21 A / at 240 V / rated value 25 A ● at AC-21 A / at 440 V / rated value 25 A operational current / of upstream fuse / rated value 25 A let-through current / with closed switch ● at 440 V / for combination switch + gG fuse / maximum 3.5 kA ● at 690 V / for combination switch + gG fuse / maximum permissible 3.5 kA Main circuit operating power ● at AC-23 A / at 240 V / rated value 5 kW ● at AC-23 A / at 400 V / rated value 9.5 kW ● at AC-23 A / at 440 V / rated value 9.5 kW ● at AC-23 A / at 690 V / rated value 9.5 kW ● at AC-3 / at 240 V / rated value 4 kW ● at AC-3 / at 400 V / rated value 7.5 kW ● at AC-3 / at 690 V / rated value 7.5 kW operational current / rated value 25 A Auxiliary circuit number of CO contacts / for auxiliary contacts 0 number of NC contacts / for auxiliary contacts 0 number of NO contacts / for auxiliary contacts 0 operating voltage / of auxiliary contacts / at AC / maximum 500 V continuous current / of the auxiliary contact / rated value 10 A insulation voltage / of the auxiliary switch / rated value 500 V Suitability suitability for use ● main switch Yes ● switch disconnector Yes ● EMERGENCY OFF switch No ● safety switch Yes ● maintenance/repair switch Yes Appearance color / of the actuating element black Product details ● product function / can be locked into OFF position Yes number of bracket locks / maximum 3 hasp thickness / of the bracket locks / minimum 4 mm hasp thickness / of the bracket locks / maximum 8 mm product extension / optional ● motor drive No ● voltage trigger No Short circuit conditional short-circuit current / with line-side fuse protection ● at 690 V / by gG fuse / rated value 50 kA according UL operational current / at AC / according to UL 508/UL 60947-4-1 / rated value 25 A operating voltage / at AC / at 50/60 Hz / according to UL 508/UL 60947-4-1 / rated value 600 V active power [hp] / at AC / at 480 V / according to UL 508/UL 60947-4-1 / rated value 10 active power [hp] / at AC / at 600 V / according to UL 508/UL 60947-4-1 / rated value 15 short-time withstand current (SCCR) / at 600 V / according to UL 508/UL 60947-4-1 5 kA continuous current / of upstream fuse / according to UL / 50 A 3LD21441TL51 Page 2/3 12.21.2020 Subject to change without notice © Copyright Siemens rated value type of fuse / according to UL RK5 Number number of connectable NC contacts / for auxiliary contacts / attachable / maximum 2 number of connectable NO contacts / for auxiliary contacts / attachable / maximum 3 number of connectable CO contacts / for auxiliary contacts / attachable / maximum 0 Connections AWG number / as coded connectable conductor cross section / solid ● maximum 8 ● minimum 14 type of connectable conductor cross-sections / for copper conductor ● solid 1x (1,5...16mm²) ● finely stranded / with core end processing 1x (1,5...10mm²) ● stranded 1x (1,5...16mm²) type of connectable conductor cross-sections / for auxiliary contacts ● solid lateral auxiliary switch 2x (0,75 ... 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 ... 2,5mm²) ● finely stranded / with core end processing lateral auxiliary switch 2x (0,75 ... 1,5mm²), 1x 2,5mm²; front auxiliary switch 1x 2,5mm² ● stranded lateral auxiliary switch 2x (0,75 ... 2,5mm²), 1x 4mm²; front auxiliary switch 1x (0,75 ... 2,5mm²) type of electrical connection ● for main current circuit box terminal ● for auxiliary contacts connection terminals Requirements design of the fuse link ● for short-circuit protection of the main circuit / required fuse gL/gG: 25 A ● for short-circuit protection of the auxiliary switch / required fuse gL/gG: 10 A Mechanical Design height 83 mm width 67 mm depth 451.5 mm fastening method Built-in unit fixed-mounted version fastening method ● 4-hole front mounting No ● front mounting with central attachment Yes ● rail mounting Yes net weight 445 g Environmental conditions ambient temperature / during operation ● minimum -25 °C ● maximum 55 °C ambient temperature / during storage / minimum -25 °C Certificates reference code ● acc. to DIN EN 61346-2 S ● acc. to IEC 81346-2 SF General Product Approval 3LD21441TL51 Page 3/4 12.21.2020 Subject to change without notice © Copyright Siemens Miscellaneous Declaration of Conformity Test Certificates Marine / Shipping other Special Test Certificate Environmental Confirmations Further information Information- and Downloadcenter (Catalogs, Brochures,…) http://www.siemens.com/lowvoltage/catalogs Industry Mall (Online ordering system) https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3LD2144-1TL51 Service&Support (Manuals, Certificates, Characteristics, FAQs,...) https://support.industry.siemens.com/cs/ww/en/ps/3LD2144-1TL51 Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...) http://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=3LD2144-1TL51 Tender specifications http://www.siemens.com/specifications 3LD21441TL51 Page 4/5 12.21.2020 Subject to change without notice © Copyright Siemens 3LD21441TL51 Page 5/6 12.21.2020 Subject to change without notice © Copyright Siemens 3LD21441TL51 Page 6/6 12.21.2020 Subject to change without notice © Copyright Siemens