... power supply for the auxiliary power supply.E:This circuit breaker for the dark-mounted, need to install the terminal ... If mounted directly on .2.The basic parameters of circuit breaker Rated voltage(V)Rated current of frame Inm(A) ... ,20,30,40,50,607540Tripolar 3line10050Tripolar 4linecircuit breaker protection curve1.circuit breaker rated short-circuit connect breaking capacity is 3KA, rated residual ...