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Siemens 3RH2131-2WB40 SIRIUS Coupling Relay, 24 V DC, 10 A

Name: 3RH2131-2WB40
Brand: Siemens
SKU: 3RH2131-2WB40
Availability: LimitedAvailability
Author: Compliance Quentin

MPN3RH2131-2WB40

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Siemens SIRIUS coupling relay, 3RH2131-2WB40, 24 V DC coil, 3 instantaneous contacts, 10 A at 24 V DC, size S00, screw and snap-on 35 mm DIN-rail mounting, with varistor surge suppression.

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Siemens 3RH2131-2WB40 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RH2131-2WB40 — Identification
Parameter	Value
Contactor frame size	S00

3RH2131-2WB40 — Ratings & Performance
Parameter	Value
Rated operational current, AC-12, max.	10 A
Rated value @ 400 V	3 A
Rated value @ 500 V	2 A
Rated value @ 690 V	1 A
Rated value @ 230 V	10 A
Rated value @ 24 V	10 A
Rated value @ 60 V	4.7 A
Rated value @ 110 V	3 A
Rated value @ 220 V	1.2 A

3RH2131-2WB40 — Control & Coil
Parameter	Value
Control supply voltage type	DC

3RH2131-2WB40 — Contacts & Poles
Parameter	Value
Auxiliary contact reliability	1 faulty switching per 100 million (17 V, 1 mA)

3RH2131-2WB40 — Connection & Mounting
Parameter	Value
Conductor cross-section, solid or stranded	2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule	2x (0.5 ... 2.5 mm²)
Mounting method	screw and snap-on mounting onto 35 mm standard mounting rail

3RH2131-2WB40 — Durability
Parameter	Value
Durability (operating cycles, typ.)	30 000 000

3RH2131-2WB40 — Environmental
Parameter	Value
Operating temperature range	-25 ... +50 °C
Storage temperature range	-55 ... +80 °C
Installation altitude, max.	2 000 m

3RH2131-2WB40 — Mechanical
Parameter	Value
Width	45 mm
Height	70 mm
Depth	73 mm

3RH2131-2WB40 — Specifications
Parameter	Value
At AC	10 000 1/h

Product details

Panel fit and mounting — S00 frame, dual-fix DIN rail

The 3RH2131-2WB40 is a size S00 coupling relay — the smallest frame in the Siemens SIRIUS contactor family, measuring 45 mm wide by 73 mm deep by 70 mm tall.

Switching capacity and DC voltage derating

The three instantaneous contacts (NO/NC configurable per wiring) switch at up to 10,000 operations per hour AC, with a DC switching frequency limited by the 5–20 ms contact dwell time.

Integrated surge suppression and environmental ratings

A varistor is built into the relay for coil surge suppression — no external snubber needed. The coil draws 1.6 W at DC pickup. RoHS compliance is documented with a substance prohibitance date of 10/01/2009.