... circuit breaker ( MCB ) can protect under 125A with the voltage DC 220V (440V) over load,short current, ... . DC miniature circuit breaker (MCB ) function as follows:1,under 125A protect2,DC220V /440V protection3,overload protection5,short current protective125A DC ... ,2P 250V; The breaking capacity is Icu=10KA; C curve. 125A DC miniature circuit breaker mcb