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Siemens 3RH1131-2BG40 — Contactors

Siemens 3RH1131-2BG40 SIRIUS Auxiliary Contactor, 3 NO, 10A

MPN3RH1131-2BG40

Siemens SIRIUS auxiliary contactor, size S00, 3 NO instantaneous contacts, screw and snap-on mounting, IP20 front, 73 mm depth.

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

3RH1131-2BG40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1131-2BG40 — 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 V6 A
Rated value @ 24 V10 A
Rated value @ 110 V1 A
Rated value @ 220 V0.27 A
3RH1131-2BG40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1131-2BG40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1131-2BG40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting
3RH1131-2BG40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1131-2BG40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1131-2BG40 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

Auxiliary contactor for control-circuit switching

The Siemens 3RH1131-2BG40 is a SIRIUS auxiliary contactor in the S00 frame size, carrying 3 instantaneous normally-open contacts. It is designed for control-circuit switching — signaling, interlocking, and logic-level loads — not motor power. The contacts are rated 10 A at 24 V, 6 A at 230 V, and 1 A at 690 V, covering the common AC and DC control voltages found in industrial panels.

Mounting is via screw or snap-on onto standard DIN rail. The 45 mm width (one standard module) and 73 mm depth leave room for gland plates and side-by-side contactor stacks.

Coil and wiring

Terminals accept 2x (0.25... 2.5 mm²) solid or stranded, or 2x (24... 14 AWG).

Frequently asked questions

Will 3RH1131-2BG40 drop into a panel that was specified around 3RH2140-1BP40 without rewiring?

Both are S00-frame SIRIUS auxiliary contactors with the same 45 mm width and screw/snap-on mounting, so the mechanical fit is identical. The difference is contact configuration: the 3RH1131-2BG40 has 3 NO contacts, while the 3RH2140-1BP40 carries a different contact arrangement. Verify your control circuit's NC requirements before swapping.

What compliance documentation does this brand provide for 3RH1131-2BG40?

RoHS compliance is documented with a substance prohibition date of 2006-07-01. The part carries IP20 front protection and pollution degree 3 rating per IEC standards.

MPN
3RH1131-2BG40