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Siemens 3RH2131-1XB40-0LA2 — Contactors

Siemens 3RH2131-1XB40-0LA2 SIRIUS Contactor Relay, Railway,

MPN3RH2131-1XB40-0LA2
Active

Siemens SIRIUS contactor relay, Size S00, 3 instantaneous NO contacts, 24-34 VDC coil with integrated varistor, screw and snap-on mounting for 35 mm DIN rail, 73 mm depth, 45 mm width.

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

3RH2131-1XB40-0LA2 — Identification
ParameterValue
Contactor frame sizeS00
3RH2131-1XB40-0LA2 — 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
3RH2131-1XB40-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2131-1XB40-0LA2 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2131-1XB40-0LA2 — 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 standard mounting rail
Side-by-side mountingYes
3RH2131-1XB40-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2131-1XB40-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2131-1XB40-0LA2 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm

Product details

The S00 footprint measures 73 mm deep, 45 mm wide, and 58 mm tall — a compact envelope that leaves room for auxiliary contact blocks on the side. Side-by-side mounting is permitted with zero gap, and the mounting position is flexible: ±180° rotation on a vertical surface, ±22.5° tilt forward/backward, or horizontal standing. Clearance distances to adjacent metalwork: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm to the side. Wire terminals accept 2× (0.5 to 1.5 mm²), 2× (0.75 to 2.5 mm²), or 2× 4 mm² solid or stranded conductors.

Operating temperature range spans -40 to +70 °C, with storage from -55 to +80 °C. The part complies with RoHS substance prohibitions effective October 1, 2009.

Frequently asked questions

Where can I buy 3RH2131-1XB40-0LA2 and how do I get a price?

This part is sourced to order against an RFQ through independent distribution. Submit a quote request for current pricing and availability — confirmed at quote time, no stock figures listed here.

What is 3RH2131-1XB40-0LA2's listed depth on this component line?

The depth is 73 mm, with a width of 45 mm and height of 58 mm. This S00 footprint fits standard 35 mm DIN-rail panels with the clearance distances specified on the datasheet.

What compliance documentation does this brand provide for 3RH2131-1XB40-0LA2?

The part complies with RoHS substance prohibitions as of October 1, 2009. For full REACH, UL, or IEC declarations, the manufacturer's documentation is available through the authorized channel.

Will 3RH2131-1XB40-0LA2 drop into a panel specified around 3RH2122-1BA40 without rewiring?

Both are S00-frame SIRIUS contactor relays on the same 35 mm DIN-rail footprint, so the mechanical fit and terminal layout are identical. The key difference is the coil voltage: this unit is 24-34 VDC with a varistor, while the 3RH2122-1BA40 uses a different coil rating — verify the control voltage before swapping.

MPN
3RH2131-1XB40-0LA2