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Siemens 3RH1131-2BW40 — Contactors

Siemens 3RH1131-2BW40 SIRIUS Auxiliary Contactor, 3 NO, 10 A

MPN3RH1131-2BW40

Siemens SIRIUS auxiliary contactor, size S00, 3 NO + 0 NC, 10 A at 24 V DC, screw and snap-on mounting, IP20.

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

3RH1131-2BW40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1131-2BW40 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 110 V1 A
Rated value @ 220 V0.27 A
3RH1131-2BW40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1131-2BW40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1131-2BW40 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1131-2BW40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
3RH1131-2BW40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1131-2BW40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1131-2BW40 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

Auxiliary contactor for SIRIUS S00 contactor systems

It provides 3 normally open (NO) instantaneous contacts and 0 normally closed (NC) contacts, switching loads up to 10 A at 24 V DC or 10 A in AC-12 duty.

Panel integration and mounting flexibility

At 45 mm wide and 60 mm tall, it occupies a standard S00 footprint; depth is 73 mm, so plan for that behind the DIN rail.

Rated operational current varies by voltage and duty: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. The AC-12 maximum is 10 A, covering resistive and small inductive loads typical in control circuits. Mechanical endurance is listed at 30,000,000 cycles typical — a solid figure for high-cycle applications like conveyor interlocks or packaging machines.

Frequently asked questions

What is 3RH1131-2BW40's listed depth?

The depth is 73 mm. Combined with a width of 45 mm and height of 60 mm, it fits the standard SIRIUS S00 footprint on a DIN rail.

Will 3RH1131-2BW40 drop into a panel specified around 3RT1015-1BB42 without rewiring?

Both are S00 frame size with the same 45 mm width and screw/snap-on mounting, so the mechanical fit is identical. The 3RH1131-2BW40 is a pure auxiliary contactor (3 NO, no power contacts), whereas 3RT1015-1BB42 is a power contactor with integrated auxiliary. If your panel uses the 3RT1015 as a main contactor and you need additional auxiliary contacts for signaling or interlocking, the 3RH1131-2BW40 mounts alongside it on the same DIN rail without rewiring the power circuit.

MPN
3RH1131-2BW40