Siemens Sirius 3RT19 Contactor & 3RH19 DIN Rail Control Relay
- Siemens 3RH1921-1FA22, The Siemens SIRIUS DIN Rail Auxiliary Relay 3RH1921-1FA22 has screw connections & is ideal as a contactor relay or power contactor. The relay has 4 NO + 2 NC contacts & can be fitted onto the front side of the contactor size S0 to S12. Siemens 3RH1921-1FA22 Mounting Block DIN EN 50005 2 closer /2 opener