3RT1276-6AR36

Data sheet 3RT1276-6AR36 Vacuum contactor, AC-3 500 A, 250 kW / 400 V AC (50-60 Hz) / DC operation 440-480 V UC Auxiliary contacts 2 NO + 2 NC 3-pole, Size S12 Busbar connections Drive: conventional product brand name SIRIUS product designation Vacuum contactor product type designation 3RT12 General technical data size of contactor S12 product extension ● function module for communication No ● auxiliary switch Yes power loss [W] for rated value of the current at AC in hot operating state ● per pole power loss [W] for rated value of the current without load current share typical 96 W 32 W 10 W surge voltage resistance ● of main circuit rated value 8 kV ● of auxiliary circuit rated value 6 kV maximum permissible voltage for safe isolation between coil and main contacts acc. to EN 60947-1 690 V shock resistance at rectangular impulse ● at AC 8,5g / 5 ms, 4,2g / 10 ms ● at DC 8,5g / 5 ms, 4,2g / 10 ms shock resistance with sine pulse ● at AC 13,4g / 5 ms, 6,5g / 10 ms ● at DC 13,4g / 5 ms, 6,5g / 10 ms mechanical service life (switching cycles) ● of contactor typical 10 000 000 ● of the contactor with added electronically optimized auxiliary switch block typical 5 000 000 ● of the contactor with added auxiliary switch block typical 10 000 000 reference code acc. to IEC 81346-2 Q Substance Prohibitance (Date) 01.05.2012 00:00:00 Ambient conditions installation altitude at height above sea level maximum 2 000 m ● ambient temperature during operation -25 ... +60 °C ● ambient temperature during storage -55 ... +80 °C Main circuit number of poles for main current circuit 3RT12766AR36 Page 1/2 3 1.21.2021 Subject to change without notice © Copyright Siemens number of NO contacts for main contacts ● operating voltage at AC-3 rated value maximum 3 1 000 V operational current ● at AC-1 at 400 V at ambient temperature 40 °C rated value 610 A ● at AC-1 — up to 690 V at ambient temperature 40 °C rated value 610 A — up to 690 V at ambient temperature 60 °C rated value 550 A — up to 1000 V at ambient temperature 40 °C rated value 610 A — up to 1000 V at ambient temperature 60 °C rated value 550 A ● at AC-3 — at 400 V rated value 500 A — at 500 V rated value 500 A — at 690 V rated value 500 A — at 1000 V rated value 500 A ● at AC-4 at 400 V rated value 430 A ● at AC-6a — up to 230 V for current peak value n=20 rated value 439 A — up to 400 V for current peak value n=20 rated value 439 A — up to 500 V for current peak value n=20 rated value 439 A — up to 690 V for current peak value n=20 rated value 439 A — up to 1000 V for current peak value n=20 rated value 439 A ● at AC-6a — up to 230 V for current peak value n=30 rated value 293 A — up to 400 V for current peak value n=30 rated value 293 A — up to 500 V for current peak value n=30 rated value 293 A — up to 690 V for current peak value n=30 rated value 293 A — up to 1000 V for current peak value n=30 rated value 293 A minimum cross-section in main circuit at maximum AC-1 rated value 370 mm² operational current for approx. 200000 operating cycles at AC-4 ● at 400 V rated value 215 A ● at 690 V rated value 151 A operating power ● at AC-3 — at 230 V rated value 160 kW — at 400 V rated value 250 kW — at 500 V rated value 355 kW — at 690 V rated value 500 kW — at 1000 V rated value 710 kW operating power for approx. 200000 operating cycles at AC-4 ● at 400 V rated value 122 kW ● at 690 V rated value 212 kW operating apparent power at AC-6a ● up to 230 V for current peak value n=20 rated value 170 000 kV·A ● up to 400 V for current peak value n=20 rated value 300 000 V·A 3RT12766AR36 Page 2/3 1.21.2021 Subject to change without notice © Copyright Siemens ● up to 500 V for current peak value n=20 rated value 380 000 V·A ● up to 690 V for current peak value n=20 rated value 520 000 V·A ● up to 1000 V for current peak value n=20 rated value 760 000 V·A operating apparent power at AC-6a ● up to 230 V for current peak value n=30 rated value 110 000 V·A ● up to 400 V for current peak value n=30 rated value 200 000 V·A ● up to 500 V for current peak value n=30 rated value 250 000 V·A ● up to 690 V for current peak value n=30 rated value 350 000 V·A ● up to 1000 V for current peak value n=30 rated value 500 000 V·A no-load switching frequency ● at AC 2 000 1/h ● at DC 2 000 1/h operating frequency ● at AC-1 maximum 700 1/h ● at AC-2 maximum 250 1/h ● at AC-3 maximum 750 1/h ● at AC-4 maximum 250 1/h Control circuit/ Control type of voltage of the control supply voltage AC/DC control supply voltage at AC ● at 50 Hz rated value 440 ... 480 V ● at 60 Hz rated value 440 ... 480 V control supply voltage at DC ● rated value 440 ... 480 V operating range factor control supply voltage rated value of magnet coil at DC ● initial value 0.8 ● full-scale value 1.1 operating range factor control supply voltage rated value of magnet coil at AC ● at 50 Hz 0.8 ... 1.1 ● at 60 Hz 0.8 ... 1.1 design of the surge suppressor with varistor apparent pick-up power of magnet coil at AC ● at 50 Hz 830 V·A inductive power factor with closing power of the coil ● at 50 Hz 0.9 apparent holding power of magnet coil at AC ● at 50 Hz 9.2 V·A inductive power factor with the holding power of the coil ● at 50 Hz 0.9 closing power of magnet coil at DC 920 W holding power of magnet coil at DC 10 W closing delay ● at AC 45 ... 100 ms ● at DC 45 ... 100 ms opening delay ● at AC 60 ... 100 ms ● at DC 60 ... 100 ms arcing time 10 ... 15 ms control version of the switch operating mechanism Standard A1 - A2 Auxiliary circuit number of NC contacts for auxiliary contacts instantaneous contact 2 number of NO contacts for auxiliary contacts instantaneous contact 2 operational current at AC-12 maximum 10 A 3RT12766AR36 Page 3/4 1.21.2021 Subject to change without notice © Copyright Siemens operational current at AC-15 ● at 230 V rated value 6A ● at 400 V rated value 3A ● at 500 V rated value 2A ● at 690 V rated value 1A operational current at DC-12 ● at 24 V rated value 10 A ● at 48 V rated value 6A ● at 60 V rated value 6A ● at 110 V rated value 3A ● at 125 V rated value 2A ● at 220 V rated value 1A ● at 600 V rated value 0.15 A operational current at DC-13 ● at 24 V rated value 10 A ● at 48 V rated value 2A ● at 60 V rated value 2A ● at 110 V rated value 1A ● at 125 V rated value 0.9 A ● at 220 V rated value 0.3 A ● at 600 V rated value 0.1 A contact reliability of auxiliary contacts 1 faulty switching per 100 million (17 V, 1 mA) UL/CSA ratings full-load current (FLA) for 3-phase AC motor ● at 480 V rated value 477 A ● at 600 V rated value 472 A yielded mechanical performance [hp] ● for 3-phase AC motor — at 200/208 V rated value 150 hp — at 220/230 V rated value 200 hp — at 460/480 V rated value 400 hp — at 575/600 V rated value 500 hp contact rating of auxiliary contacts according to UL A600 / Q600 Short-circuit protection design of the fuse link ● for short-circuit protection of the main circuit — with type of coordination 1 required gG: 800 A (690 V, 100 kA) — with type of assignment 2 required gG: 800 A (690 V, 50 kA), aM: 630 A (690 V, 50 kA), BS88: 800 A (415 V, 50 kA) ● for short-circuit protection of the auxiliary switch required gG: 10 A (500 V, 1 kA) Installation/ mounting/ dimensions mounting position +/-22,5° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface; standing, on horizontal mounting surface fastening method screw fixing ● side-by-side mounting Yes height 210 mm width 145 mm depth 206 mm required spacing ● with side-by-side mounting — forwards 20 mm — upwards 10 mm — downwards 10 mm — at the side 0 mm ● for grounded parts — forwards 20 mm — upwards 10 mm 3RT12766AR36 Page 4/5 1.21.2021 Subject to change without notice © Copyright Siemens — at the side 10 mm — downwards 10 mm ● for live parts — forwards 20 mm — upwards 10 mm — downwards 10 mm — at the side 10 mm Connections/ Terminals width of connection bar 25 mm thickness of connection bar 6 mm diameter of holes 11 mm number of holes 1 type of electrical connection ● for main current circuit Connection bar ● for auxiliary and control circuit screw-type terminals ● at contactor for auxiliary contacts Screw-type terminals ● of magnet coil Screw-type terminals type of connectable conductor cross-sections ● at AWG cables for main contacts 2/0 ... 500 kcmil connectable conductor cross-section for main contacts ● stranded 70 ... 240 mm² connectable conductor cross-section for auxiliary contacts ● solid or stranded 0.5 ... 4 mm² ● finely stranded with core end processing 0.5 ... 2.5 mm² type of connectable conductor cross-sections ● for auxiliary contacts — solid 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²) — solid or stranded 2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²) — finely stranded with core end processing 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) ● at AWG cables for auxiliary contacts 2x (20 ... 16), 2x (18 ... 14), 1x 12 ● AWG number as coded connectable conductor cross section for auxiliary contacts 18 ... 14 Safety related data product function ● mirror contact acc. to IEC 60947-4-1 Yes ● positively driven operation acc. to IEC 60947-5-1 No protection class IP on the front acc. to IEC 60529 IP00; IP20 with box terminal/cover touch protection on the front acc. to IEC 60529 finger-safe, for vertical contact from the front with box terminal/cover suitability for use safety-related switching OFF Yes Certificates/ approvals General Product Approval Declaration of Conformity Miscellaneous 3RT12766AR36 Page 5/6 EMC Test Certificates Special Test Certificate Marine / Shipping Type Test Certificates/Test Report 1.21.2021 Declaration of Conformity other Confirmation Subject to change without notice © Copyright Siemens other Miscellaneous Railway Confirmation Special Test Certificate Further information Information- and Downloadcenter (Catalogs, Brochures,…) https://www.siemens.com/ic10 Industry Mall (Online ordering system) https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RT1276-6AR36 Cax online generator http://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RT1276-6AR36 Service&Support (Manuals, Certificates, Characteristics, FAQs,...) https://support.industry.siemens.com/cs/ww/en/ps/3RT1276-6AR36 Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...) http://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RT1276-6AR36&lang=en Characteristic: Tripping characteristics, I²t, Let-through current https://support.industry.siemens.com/cs/ww/en/ps/3RT1276-6AR36/char Further characteristics (e.g. electrical endurance, switching frequency) http://www.automation.siemens.com/bilddb/index.aspx?view=Search&mlfb=3RT1276-6AR36&objecttype=14&gridview=view1 3RT12766AR36 Page 6/7 1.21.2021 Subject to change without notice © Copyright Siemens last modified: 3RT12766AR36 Page 7/7 12/18/2020 1.21.2021 Subject to change without 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