2 Pole DC 800V Circuit Breaker for Solar ( PV ) System 1,L7,C45N,C60N,C65N design 2 ... 2 Pole DC 800V Circuit Breaker ( DC MCB breaker ) for Solar ( PV ) System ker(hereafter ref The KL7-DCseries DC ... 63A and below, direct-current rated voltage 600V. Uses for carries on the overload, short circuit protection to the current ... 2 Pole DC 800V Circuit Breaker ( DC MCB breaker ) for Solar ( PV ) System