【SIEMENS】3RV2921-1M,
3RV29212M,SIGNALING SWITCH FOR MSP 2NO/2NC
【SIEMENS】3RV2921-2M,
3RV29214M,SIGNALING SWITCH FOR MSP 2NO/2NC
3RV29221CB0,UNDERVOLT. RELEASE W. 2 AUX. CON
3RV29221CP0,UNDERVOLTAGE RELEASE AC 240V/60H
3RV29221CV0,UNDERVOLTAGE RELEASE AC 440V/60H
3RV29221CV1,UNDERVOLTAGE RELEASE AC 480V/60H
