Skip to main content
Log in
Siemens 3RH2131-2BF40 — Contactors

Siemens SIRIUS 3RH2131-2BF40 Auxiliary Contactor, 3 NO, 110

MPN3RH2131-2BF40
Active

Siemens SIRIUS 3RH2131-2BF40 auxiliary contactor, size S00, 3 NO instantaneous contacts, 110 VDC coil, screw and snap-on 35 mm DIN rail mounting, 45 x 70 x 73 mm.

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

Specifications

3RH2131-2BF40 — Identification
ParameterValue
Contactor frame sizeS00
3RH2131-2BF40 — 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
3RH2131-2BF40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2131-2BF40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2131-2BF40 — 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 DIN rail
3RH2131-2BF40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2131-2BF40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2131-2BF40 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm
3RH2131-2BF40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

The 3RH2131-2BF40: The 3 NO contacts are rated for switching at various voltage levels. At 230 V AC, the rated operational current is 10 A. For DC switching, at 110 V DC the rated current is 3 A, at 220 V DC it is 1.2 A, and at 600 V DC it is 0.26 A. The arcing time is specified as 10 to 15 ms. These ratings define the load the contacts can break under the respective voltage and duty.

Dimensions are 45 mm width, 70 mm height, and 73 mm depth. This fits standard S00 contactor footprints.

Relative humidity minimum is 10 %. The product extension for auxiliary switches is supported.

Frequently asked questions

What is the coil voltage and power consumption for 3RH2131-2BF40?

The rated coil voltage is 110 V DC. Closing power and holding power of the magnet coil at DC are both 4 W.

What are the clearance distances required around the 3RH2131-2BF40?

Required clearances: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side.

What compliance documentation is available for 3RH2131-2BF40?

The product is RoHS compliant with a substance prohibition date of October 1, 2009. Pollution degree 3 is specified.

How can I get pricing and availability for the 3RH2131-2BF40?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RH2131-2BF40