Siemens Sirius 3RT19 Contactor & 3RH19 DIN Rail Control Relay
- Siemens 3RH1921-1CA01, The Siemens SIRIUS DIN Rail Auxiliary Relay 3RH1921-1CA01 has screw connections & is ideal as a contactor relay or power contactor. The relay has 1 NC contact & can be fitted onto the front side of the contactor size S0 to S12. Siemens 3RH1921-1CA01 Auxiliary Switch Block DIN EN 50005 1 Pole