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Siemens 3RH2131-2UB40 — Contactors

Siemens 3RH2131-2UB40 SIRIUS Auxiliary Contactor, 24 VDC

MPN3RH2131-2UB40
Active

Siemens SIRIUS 3RH2131-2UB40 auxiliary contactor, size S00, 24 VDC coil, 3 NO instantaneous contacts, screw and snap-on mounting for 35 mm DIN rail, with varistor surge suppression.

Siemens 3RH2131-2UB40 datasheet (PDF)
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

3RH2131-2UB40 — Identification
ParameterValue
Contactor frame sizeS00
3RH2131-2UB40 — 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
3RH2131-2UB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2131-2UB40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2131-2UB40 — 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
3RH2131-2UB40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2131-2UB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2131-2UB40 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm
3RH2131-2UB40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

SIRIUS auxiliary contactor, size S00, 24 VDC coil

The Siemens 3RH2131-2UB40 is a SIRIUS auxiliary contactor in frame size S00, designed for switching control circuits and signal interlocking in motor control centres and industrial panels. It carries three normally-open instantaneous contacts rated for switching at 24 VDC. The coil is rated 24 VDC with a closing power of 4 W, and the contactor includes an integrated varistor for surge suppression across the coil terminals.

This voltage-dependent derating is typical for auxiliary contacts and must be checked against the actual control circuit voltage in the application.

Panel fit and mounting flexibility

The contactor measures 45 mm wide, 70 mm high, and 73 mm deep, fitting the S00 footprint.

Environmental ratings and compliance

Relative humidity minimum is 10 %.

Frequently asked questions

What compliance documentation does Siemens provide for the 3RH2131-2UB40?

The product carries a RoHS substance prohibition date of 10/01/2009, indicating compliance with RoHS directives.

MPN
3RH2131-2UB40