Product identity and key ratings
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.
Mounting and environmental limits
Fastened by screw or snap-on onto 35 mm DIN rail. Clearances: 10 mm upward, forward, downward; 6 mm to the side. Operating temperature -25 to +60 °C; storage -55 to +80 °C.
