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Siemens 3RT1276-6AU36

vacuum contactor AC-3e/AC-3 500 A, 250 kW / 400 V, 3-pole, Uc: 240-277 V AC(50-60 Hz) / DC drive: conventional auxiliary contacts 2 NO + 2 NC main circuit: busbar control and auxiliary circuit: screw terminal

SiemensMFR # 3RT1276-6AU36SKU # CEY-8EF3B0393AF6

product brand nameSIRIUS

product designationPower contactor

product type designation3RT12

size of contactorS12

function module for communicationNo

auxiliary switchYes

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About This Product

Siemens 3RT1276-6AU36

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Product selection and compatibility support from our technical team
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Specifications

product brand nameSIRIUS

product designationPower contactor

product type designation3RT12

General technical data

size of contactorS12

function module for communicationNo

auxiliary switchYes

at AC in hot operating state96 W

at AC in hot operating state per pole32 W

without load current share typical10 W

type of calculation of power loss current-dependentquadratic

of main circuit with degree of pollution 3 rated value1 000 V

of auxiliary circuit with degree of pollution 3 rated value500 V

of main circuit rated value8 kV

of auxiliary circuit rated value6 kV

maximum permissible voltage for protective separation between coil and main contacts according to EN 60947-1690 V

at AC8,5 g / 5 ms, 4,2 g / 10 ms

at DC8,5 g / 5 ms, 4,2 g / 10 ms

at AC13,4 g / 5 ms, 6,5 g / 10 ms

at DC13,4 g / 5 ms, 6,5 g / 10 ms

of contactor typical10 000 000

of the contactor with added electronically optimized auxiliary switch block typical5 000 000

of the contactor with added auxiliary switch block typical10 000 000

reference code according to IEC 81346-2Q

Substance Prohibitance (day/month/year)05/01/2012

SVHC substance nameLead CAS-No. 7439-92-1

Net Weight10.37 kg

Ambient conditions

installation altitude at height above sea level maximum2 000 m

during operation-25 ... +60 °C

during storage-55 ... +80 °C

relative humidity minimum10 %

relative humidity at 55 °C according to IEC 60068-2-30 maximum95 %

Main circuit

number of poles for main current circuit3

number of NO contacts for main contacts3

number of NC contacts for main contacts0

at AC-3 rated value maximum1 000 V

at AC-3e rated value maximum1 000 V

at AC-1 at 400 V at ambient temperature 40 °C rated value610 A

— up to 690 V at ambient temperature 40 °C rated value610 A

— up to 690 V at ambient temperature 60 °C rated value550 A

— at 400 V rated value500 A

— at 500 V rated value500 A

— at 690 V rated value500 A

— at 400 V rated value500 A

— at 500 V rated value500 A

— at 690 V rated value500 A

at AC-4 at 400 V rated value430 A

— up to 230 V for current peak value n=20 rated value439 A

— up to 400 V for current peak value n=20 rated value439 A

— up to 500 V for current peak value n=20 rated value439 A

— up to 690 V for current peak value n=20 rated value439 A

— up to 230 V for current peak value n=30 rated value293 A

— up to 400 V for current peak value n=30 rated value293 A

— up to 500 V for current peak value n=30 rated value293 A

— up to 690 V for current peak value n=30 rated value293 A

minimum cross-section in main circuit at maximum AC-1 rated value370 mm²

at 400 V rated value215 A

at 690 V rated value215 A

— at 230 V rated value160 kW

— at 400 V rated value250 kW

— at 500 V rated value355 kW

— at 690 V rated value500 kW

— at 230 V rated value160 kW

— at 400 V rated value250 kW

— at 500 V rated value355 kW

— at 690 V rated value500 kW

at 400 V rated value122 kW

at 690 V rated value212 kW

up to 230 V for current peak value n=20 rated value170 kVA

up to 400 V for current peak value n=20 rated value300 kVA

up to 500 V for current peak value n=20 rated value380 kVA

up to 690 V for current peak value n=20 rated value520 kVA

up to 230 V for current peak value n=30 rated value110 kVA

up to 400 V for current peak value n=30 rated value200 kVA

up to 500 V for current peak value n=30 rated value250 kVA

up to 690 V for current peak value n=30 rated value350 kVA

up to 1000 V for current peak value n=30 rated value500 kVA

at AC2 000 1/h

at DC2 000 1/h

at AC-1 maximum700 1/h

at AC-2 maximum250 1/h

at AC-3 maximum750 1/h

— maximum750 1/h

at AC-4 maximum250 1/h

Control circuit/ Control

type of voltage of the control supply voltageAC/DC

at 50 Hz rated value240 ... 277 V

at 60 Hz rated value240 ... 277 V

control supply voltage at DC rated value240 ... 277 V

initial value0.8

full-scale value1.1

at 50 Hz0.8 ... 1.1

at 60 Hz0.8 ... 1.1

design of the surge suppressorwith varistor

— at 50 Hz700 V·A

— at 60 Hz700 V·A

— at 60 Hz830 V·A

— at 50 Hz830 V·A

at 50 Hz830 V·A

at 60 Hz830 V·A

at 50 Hz0.9

at 60 Hz0.9

at minimum rated control supply voltage at DC8.5 V·A

at maximum rated control supply voltage at DC10 V·A

— at 50 Hz7.6 V·A

— at 60 Hz7.6 V·A

— at 50 Hz9.2 V·A

— at 60 Hz9.2 V·A

at 50 Hz0.9

at 60 Hz0.9

closing power of magnet coil at DC920 W

holding power of magnet coil at DC10 W

at AC45 ... 100 ms

at DC45 ... 100 ms

at AC60 ... 100 ms

at DC60 ... 100 ms

arcing time10 ... 15 ms

control version of the switch operating mechanismStandard A1 - A2

Auxiliary circuit

number of NC contacts for auxiliary contacts instantaneous contact2

number of NO contacts for auxiliary contacts instantaneous contact2

operational current at AC-12 maximum10 A

at 230 V rated value6 A

at 400 V rated value3 A

at 500 V rated value2 A

at 690 V rated value1 A

at 24 V rated value10 A

at 48 V rated value6 A

at 60 V rated value6 A

at 110 V rated value3 A

at 125 V rated value2 A

at 220 V rated value1 A

at 600 V rated value0.15 A

at 24 V rated value10 A

at 48 V rated value2 A

at 60 V rated value2 A

at 110 V rated value1 A

at 125 V rated value0.9 A

at 220 V rated value0.3 A

at 600 V rated value0.1 A

contact reliability of auxiliary contacts1 faulty switching per 100 million (17 V, 1 mA)

UL/CSA ratings

at 480 V rated value477 A

at 600 V rated value472 A

— at 200/208 V rated value150 hp

— at 220/230 V rated value200 hp

— at 460/480 V rated value400 hp

— at 575/600 V rated value500 hp

contact rating of auxiliary contacts according to ULA600 / Q600

Short-circuit protection

design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 VC characteristic: 10 A; 0.4 kA

— with type of coordination 1 requiredgG: 800 A (690 V, 100 kA)

— with type of coordination 2 requiredgG: 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 requiredgG: 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

fastening method side-by-side mountingYes

fastening methodscrew fixing

height217 mm

width160 mm

depth225 mm

— forwards20 mm

— upwards10 mm

— downwards10 mm

— at the side0 mm

— forwards20 mm

— upwards10 mm

— at the side10 mm

— downwards10 mm

— forwards20 mm

— upwards10 mm

— downwards10 mm

— at the side10 mm

Connections/ Terminals

for main current circuitConnection bar

for auxiliary and control circuitscrew-type terminals

at contactor for auxiliary contactsScrew-type terminals

of magnet coilscrew terminal

width of connection bar25 mm

thickness of connection bar6 mm

diameter of holes11 mm

number of holes1

for AWG cables for main contacts2/0 ... 500 kcmil

stranded70 ... 240 mm²

solid or stranded0.5 ... 4 mm²

finely stranded with core end processing0.5 ... 2.5 mm²

— solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)

— solid or stranded2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)

— finely stranded with core end processing2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)

for AWG cables for auxiliary contacts2x (20 ... 16), 2x (18 ... 14), 1x 12

AWG number as coded connectable conductor cross section for auxiliary contacts18 ... 14

Safety related data

mirror contact according to IEC 60947-4-1Yes

positively driven operation according to IEC 60947-5-1No

Electrical Safety

protection class IP on the front according to IEC 60529IP00; IP20 with box terminal/cover

touch protection on the front according to IEC 60529finger-safe, for vertical contact from the front with box terminal/cover

Accessories 33

Genuine accessories that can be used with the Siemens 3RT1276-6AU36 motor and are supplied separately are listed below. Click a code to open the accessory page and see the other compatible motors.

Part no	Description	Compatible motors
3RA1954-2A	Aksesuar · Mechanical interlocks · mechanical interlocks
3RH1921-2KA02	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-2KA20	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-2DE11	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-2EE02	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-2JE11	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-2JA11	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-2EA20	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-2EA02	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-2DA11	Aksesuar · Auxiliary switch · auxiliary switches
3RA1972-2A	Aksesuar · Base plates · base plates
3RA1973-2A	Aksesuar · Wiring modules, connectors and kits · link rails
3RT1966-4EA1	Aksesuar · Terminal covers · terminal covers
3RH1921-1DA11	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-1EA02	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-1EA11	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-1EA20	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-1JA11	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-1KA02	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-1KA11	Aksesuar · Auxiliary switch · auxiliary switches
3RH1921-1KA20	Aksesuar · Auxiliary switch · auxiliary switches
3RT2900-1SB10	Aksesuar · Miscellaneous accessories · labeling plates
3RT2900-1SB20	Aksesuar · Miscellaneous accessories · labeling plates
3RT1916-4JA02	Aksesuar · Miscellaneous accessories · insulation stops
3RT1926-4MA10	Aksesuar · Sealing covers · sealing covers
3RT1956-1CE00	Aksesuar · Surge suppressor · RC elements
3RT2900-1SB60	Aksesuar · Miscellaneous accessories · labeling plates
3RT2926-1QT00	Aksesuar · LED modules · LED display indicator modules
3RT1966-4EA2	Aksesuar · Terminal covers · terminal covers
3RT1966-4EA3	Aksesuar · Terminal covers · terminal covers
3TX6546-3B	Aksesuar · Terminal covers · terminal covers
3RT1975-5AU31	Yedek parça · Solenoid coils · solenoid coils
3RT1976-6V	Yedek parça · Contact pieces and vacuum interrupters · vacuum interrupters