This circuit breaker is widely used in our daily life among the building ,the motor system good quanlity and price 1.Structure of the advanced2. Reliable3. Tripping rapidly4. Rail Installation5. Long life6. Applicable to the exchange of 50Hz to 60Hz, pole 220V, two, three, four-pole 380V, current to 63A for the overload, short circuit protection. 7. Especially suitable for industrial and ...