Electrical Control SystemChina PV System 1 2 3 4 Pole 1 2 3 6 16 20 32 40 63 AMP 1000V Single Three Phase MCB Mini DC Circuit Breaker, Find details about China DC MCB Breaker, DC Switch MCB from PV System 1 2 3 4 Pole 1 2 3 6 16 20 32 40 63 AMP 1000V Single Three Phase MCB Mini DC Circuit Breaker