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Low voltage circuit breaker is also called automatic switch, it is a kind of either the manual switch function, and also automatically pressure loss under voltage electrical overload and short circuit protection. It can be used to allocate electricity, and to unfrequent start asynchronous motor by which would protect for the power line and motor, when they encounter serious overload , short circuit or under-voltage fault breakers can automatically cut off the circuit, its function is equivalent to fuse switch and thermal relay, And generally after the breaking the fault current,no need to change parts . MCCB has obtained the widespread application.
High Breaking Capacity Electric Moulded Case Circuit Breaker-- Anm13(vl)