BMN-32 series miniature circuit breakers are suitable for single-phase residential circuits with alternating current of 50Hz and 60Hz and rated voltage of 230V and below to protect overload and short-circuit of electrical circuits. The product has high breaking capacity, small volume and width of 18mm.Zero, fire line is cut off at the same time, put an end to the fire line, zero line connection reverse or zero line to the ground potential caused by personal and fire risk, is the current civil residential areas in the most ideal power distribution protection switch.