Siemens SIRIUS 3RH2131-2LV40 coupling contactor relay railway, 3 NO + 1 NC, 36 V DC, 0.7...1.25* Us, with varistor integrated, frame size S00, spring-loaded terminal.
Spring-loaded terminals accept 0.2–2.5 mm² solid or ferruled stranded wire — strip length 8 mm, no screwdriver needed. The integrated varistor means the coil suppression is already on the relay — no separate snubber to order or mount. Verify polarity: the varistor is non-polarized, so the 36 V DC coil can be wired in either direction, but the auxiliary contacts are polarity-sensitive only if driving DC inductive loads downstream.
The official description is: coupling contactor relay railway, 3 NO + 1 NC, 36 V DC, 0.7... 1.25* Us, with varistor integrated, frame size S00, spring-loaded terminal.
This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment on your quantity.
Standard Siemens SIRIUS documentation includes a CE declaration of conformity and the product datasheet. For railway-specific approvals (EN 50155, EN 61373), refer to the Siemens Industry Online Support entry for this order code — the evidence does not list specific third-party certifications beyond the standard industrial compliance.
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