... contact, alarm contact, shunt release,mx + of, under voltage release,over voltage. HH45/60/61 Circuit breaker univeral auxiliary ... setting value. To ensure automatic tripping under situation of over voltage and under voltage MN is under voltage release ... ) Us AC/DC:2448V120 3.Technical parameters of overvoltage,undervoltage,over-undervoltage release and loss-voltage protection device NameRated ...