Thermal Circuit Breakers
Magnetic Circuit Breakers
Functions and Selections
MV: Overvoltage trip auxiliary, over-votalge protect: 270V±5%.
MN: Lowervoltage trip auxiliary, lower-voltage protect: 170V±5%.
MV+MN:
When voltage overthan 270v, circuit breaker will trip to protect main power circuit;
When voltage underthan 170v, circuit breaker will trip to protect main power circuit.