Technical Overview: 3RH2131-1BM40
The Siemens 3RH2131-1BM40 is a **Contactor Relay** from the SIRIUS Innovation (S00) series. It is used for switching control signals in automation circuits rather than driving main power loads.
Configuration
| Contacts | 3 NO + 1 NC |
| Control Voltage | 220 V DC |
| Connection | Screw Terminals |
| Size | S00 |
Special Application
Note on Voltage: This unit operates with a **220 V DC coil**, which is common in power distribution substations and marine environments. It is NOT compatible with standard 24V DC systems. The **3RH2131-1BM40** is expandable with auxiliary switch blocks mounted on the front.
