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Siemens 3RH1131-1MB40-0KT0 — Contactors

Siemens SIRIUS 3RH1131-1MB40-0KT0 Coupling Relay, 24 VDC, 10

MPN3RH1131-1MB40-0KT0

Siemens SIRIUS coupling relay, 3RH1131-1MB40-0KT0, 24 VDC coil, 10 A AC-12 rated, S00 size, 45 mm wide, screw and snap-on 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

3RH1131-1MB40-0KT0 — Identification
ParameterValue
Contactor frame sizeS00
3RH1131-1MB40-0KT0 — Ratings & Performance
ParameterValue
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
3RH1131-1MB40-0KT0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1131-1MB40-0KT0 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1131-1MB40-0KT0 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1131-1MB40-0KT0 — 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)
3RH1131-1MB40-0KT0 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
3RH1131-1MB40-0KT0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1131-1MB40-0KT0 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

The Siemens SIRIUS 3RH1131-1MB40-0KT0 is a coupling relay for switching auxiliary circuits — essentially a contactor-style relay that handles control signals, not motor loads. The S00 frame size keeps the footprint tight at 45 mm wide.

Mounts via screw or snap-on to DIN rail — the snap-on feature speeds panel assembly.

Coil and contact performance

Pick-up voltage is 85% of rated (20.4 V for the 24 V coil), drop-out is 15% (3.6 V) — standard for industrial relays. Coil holding power is 1.4 W DC, so it won't heat up the panel noticeably.

Frequently asked questions

Where can I buy 3RH1131-1MB40-0KT0 and how do I get a price?

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

What are the key ratings for 3RH1131-1MB40-0KT0?

The coil is 24 V DC, the contacts are rated 10 A at AC-12 (resistive), and the surge voltage resistance is 6 kV. The S00 frame size is 45 mm wide.

MPN
3RH1131-1MB40-0KT0