... series circuit breaker is used in lighting distribution system or motor distribution system for protecting overload and short-circuit ... mainly used in AC 50Hz/60Hz single-pole 240V or two, three, four-pole 415Vcircuit for overload and ... Rated current(A) C 1, 3, 5, 6, 10, 15, 16, 20, 25, 32, 40, 50, 60, 63 D 1 ... , 3, 5, 6, 10, 15, 16, 20, 25, 32, 40 Electric endurance not lower than(times ...