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Siemens 3RH1131-1MB40 — Contactors

Siemens 3RH1131-1MB40 SIRIUS Coupling Relay, 24 VDC, 10 A, 3

MPN3RH1131-1MB40

Siemens SIRIUS coupling relay, 3RH1131-1MB40, for switching auxiliary circuits, 24 VDC coil, 10 A rated current, Size S00, screw and snap-on mounting, IP20 front.

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

3RH1131-1MB40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1131-1MB40 — 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
3RH1131-1MB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1131-1MB40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1131-1MB40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (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
3RH1131-1MB40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RH1131-1MB40 — Environmental
ParameterValue
Operating temperature range-25 ... +40 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1131-1MB40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

The Siemens 3RH1131-1MB40 is a SIRIUS coupling relay built for switching auxiliary circuits in a control panel. Coil pulls in at 24 VDC, drops out at the lower end of the 0.85 to 2.15 range — standard for 24 V logic. Snaps onto a DIN rail or screws down; size S00 footprint (45 mm wide × 57.5 mm tall × 72 mm deep) fits tightly into a crowded enclosure.

Mounts on a vertical surface with screw or snap-on fastening. Wire terminations accept solid conductors: two of 0.5…1.5 mm², two of 0.75…2.5 mm², or one of 4 mm² per clamp. AWG equivalents are 20…16, 18…14, and 12 respectively. IP20 on the front — protected against finger contact, not washdown. Keep it inside the enclosure.

Frequently asked questions

Where can I buy 3RH1131-1MB40 and get a price?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm number.

What is the depth of 3RH1131-1MB40?

72 mm deep, with a width of 45 mm and height of 57.5 mm — size S00 footprint.

What conductor sizes does the 3RH1131-1MB40 accept?

Solid conductors: two of 0.5…1.5 mm², two of 0.75…2.5 mm², or one of 4 mm² per clamp. AWG equivalents: 2x 20…16, 2x 18…14, 1x 12.

Will 3RH1131-1MB40 drop into a panel specified around 3RH2122-1WB40?

Not a direct bolt-in — the 3RH1131-1MB40 is a coupling relay with 3 NO instantaneous contacts, while the 3RH2122-1WB40 has a different contact configuration. Both share the S00 footprint and DIN-rail mounting, but check your wiring diagram for contact count and function before swapping.

MPN
3RH1131-1MB40