Undervoltage release 110 V AC/50 Hz. 120 V AC/60 Hz with screw terminal for circuit breaker 3RV2
Shunt release 350-415 V AC. 50/60 Hz. 100% ON period 330-500 V AC. 50/60 Hz. 5 s ON period 330-500 V DC. 5 s ON period with screw terminal for circuit breaker 3RV8
Shunt release 350-415 V AC. 50/60 Hz. 100% ON period 330-500 V AC. 50/60 Hz. 5 s ON period 330-500 V DC. 5 s ON period with screw terminal for circuit breaker 3RV37