China Hot Sale AC400V 690V 750V 20A 63A 300A 400A 630A 800A 1250A Cm1 Series 400AMP Shunt for Moulded Case Circuit Breaker MCCB, Find details about China Mould Case Circuit Breaker, Circuit Breaker from China Hot Sale AC400V 690V 750V 20A 63A 300A 400A 630A 800A 1250A Cm1 Series 400AMP Shunt for Moulded Case Circuit Breaker MCCB