1.The Isolating Switch&mcb&circuit breaker applys to 50Hz to 60Hz, pole 220V, two, three, four-pole 380V, current to 63A . The Isolating Switch&mcb&circuit breaker applys to 50Hz to 60Hz, pole 220V, two, three, four-pole 380V, current to 63A . Features:1.Structure of the advanced2. Reliable3. Tripping rapidly4. Rail Installation5. Long life6. Applicable to the exchange of 50Hz to 60Hz, pole 220V, ...