The Siemens 3RH2131-1KB40 is a SIRIUS coupling relay for switching auxiliary circuits, with a 24 VDC coil drawing 2.8 W and three instantaneous contacts rated for 10 A at 24 V.
Clearances: 10 mm upward, forward, downward; 6 mm to the side.
Siemens 3RH2131-1KB40 Coupling Relay, 24 VDC, 3 Contacts, S0
MPN3RH2131-1KB40
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Siemens SIRIUS coupling relay, 3RH2131-1KB40, 24 VDC coil, 3 instantaneous contacts, size S00, screw and snap-on DIN rail mounting.
$24.13Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Contactor frame size | S00 |
| Parameter | Value |
|---|---|
| Rated operational current, AC-12, max. | 10 A |
| Rated value @ 400 V | 3 A |
| Rated value @ 500 V | 2 A |
| Rated value @ 690 V | 1 A |
| Rated value @ 230 V | 10 A |
| Rated value @ 24 V | 10 A |
| Rated value @ 60 V | 4.7 A |
| Rated value @ 110 V | 3 A |
| Rated value @ 220 V | 1.2 A |
| Parameter | Value |
|---|---|
| Control supply voltage type | DC |
| Parameter | Value |
|---|---|
| Auxiliary contact reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Parameter | Value |
|---|---|
| Conductor cross-section, solid or stranded | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm² |
| Conductor cross-section, finely stranded w/ ferrule | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| Mounting method | screw and snap-on mounting onto 35 mm DIN rail |
| Parameter | Value |
|---|---|
| Durability (operating cycles, typ.) | 30 000 000 |
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C |
| Storage temperature range | -55 ... +80 °C |
| Installation altitude, max. | 2 000 m |
| Parameter | Value |
|---|---|
| Width | 45 mm |
| Height | 57.5 mm |
| Depth | 73 mm |
| Parameter | Value |
|---|---|
| At AC | 10 000 1/h |
Product details
Frequently asked questions
What compliance documentation is associated with this part?
RoHS compliance effective 10/01/2009 per evidence. Degree of pollution 3.
MPN
3RH2131-1KB40