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Siemens 3RH2131-1VB40 — Contactors

Siemens 3RH2131-1VB40 SIRIUS Coupling Relay, 24 VDC, 10 A, 3

MPN3RH2131-1VB40
Active

Siemens SIRIUS coupling relay, 3RH2131-1VB40, 24 VDC coil, 10 A rated switching, 3 NO instantaneous contacts, size S00, screw and snap-on 35 mm DIN rail mounting.

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

3RH2131-1VB40 — Identification
ParameterValue
Contactor frame sizeS00
3RH2131-1VB40 — 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
3RH2131-1VB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2131-1VB40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2131-1VB40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail
3RH2131-1VB40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RH2131-1VB40 — Environmental
ParameterValue
Operating temperature range-25 ... +50 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2131-1VB40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm
3RH2131-1VB40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

The Siemens 3RH2131-1VB40 is a SIRIUS coupling relay — a contactor-style device for switching auxiliary circuits in control panels. It carries 3 normally-open instantaneous contacts rated 10 A at 24 V and 10 A at 230 V, with a 24 VDC coil drawing 1.6 W.

The 10 A rating at both 24 V and 230 V covers most auxiliary loads — pilot lights, solenoid valves, small contactor coils. The 3 NO contacts give you three independent switching paths in one package, which saves DIN-rail space compared to stacking individual relays. The diode surge suppressor is built into the coil circuit, so you don't need an external flyback diode on the DC side. Mounting is flexible: screw-fix or snap onto 35 mm DIN rail. Clearances: 10 mm upward and forward, 6 mm at the sides.

Frequently asked questions

Will 3RH2131-1VB40 drop into a panel specified around 3RH2122-1WB40?

Both are size S00 Siemens SIRIUS contactor relays with the same 45 mm width and 35 mm DIN rail mounting. The 3RH2131-1VB40 has 3 NO contacts; the 3RH2122-1WB40 has a different contact arrangement. Check your schematic for NO vs NC count before swapping.

What is the depth and width of 3RH2131-1VB40?

Depth is 73 mm, width is 45 mm, height is 57.5 mm.

What compliance documentation does Siemens provide for this relay?

The part carries a RoHS compliance date of 10/01/2009, indicating it meets the EU RoHS directive. Standard Siemens documentation includes the declaration of conformity and CE marking.

Where can I buy 3RH2131-1VB40 and how is it quoted?

This part is sourced through independent industrial automation distribution. Submit an RFQ with your quantity; availability and current pricing are confirmed at quote time.

MPN
3RH2131-1VB40