The series ACB rated current from 200A to 4000A, rated voltage AC 50Hz, 380V, applicable to the exchange of 50Hz, a stable operating voltage of 380V power distribution lines, power distribution is mainly used to protect power lines and equipment overload, the less And short-circuit voltage, under normal conditions for the lines frequently do not convert.
Shell frame 630A rated current level and below can short-circuit in the exchange of 50Hz rated voltage of 1140V underground distribution network, the circuit breaker can also be used to protect the registration of motor overload, short circuit and under voltage, under normal conditions can be The starter motor is not frequent.