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Siemens 3RH2131-2BW40 — Contactors

Siemens 3RH2131-2BW40 SIRIUS Auxiliary Contactor, S00, 3 NO

MPN3RH2131-2BW40
Active

Siemens SIRIUS auxiliary contactor, size S00, 3 NO instantaneous contacts, screw and snap-on mounting onto 35 mm standard mounting rail, 73 mm depth, 45 mm width, 70 mm height.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH2131-2BW40 — Identification
ParameterValue
Contactor frame sizeS00
3RH2131-2BW40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V4.7 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A
3RH2131-2BW40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2131-2BW40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2131-2BW40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail
3RH2131-2BW40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2131-2BW40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2131-2BW40 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm
3RH2131-2BW40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

It is designed for switching control circuits — signalling, interlocking, and logic-level loads — rather than main motor power. Rated switching current varies by voltage: 10 A at 24 V AC, 10 A at 230 V AC, 3 A at 400 V AC, and 1 A at 690 V AC. For DC loads, it handles 10 A at 24 V rated value, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, and 0.26 A at 600 V. The coil draws 4 W during both closing and holding at DC.

The mounting position flexibility — full rotation and tilt — means it fits in tight enclosures where orientation is constrained.

Frequently asked questions

Will 3RH2131-2BW40 drop into a panel specified around 3RH2122-1BW40 without rewiring?

Both are S00 frame auxiliary contactors with the same mounting footprint on 35 mm DIN rail, so mechanical fit is identical. The difference is contact configuration: 3RH2131-2BW40 has 3 NO contacts, while 3RH2122-1BW40 has a different contact arrangement. Verify your control circuit's contact count before substituting.

What compliance documentation does this brand provide for 3RH2131-2BW40?

RoHS compliance is documented with a substance prohibitance date of October 1, 2009.

MPN
3RH2131-2BW40