BMXN-32 series miniature circuit breaker is suitable for AC 50 Hz / 60 Hz, rated voltage 230 V and below single-phase residential lines, to protect the overload and short circuit of electrical lines, the product has high breaking capacity, small size, width of only 30 mm 18mm; the zero and live wires are cut off at the same time, so as to eliminate the personal and fire hazards caused by the reverse connection of live wire and zero wire or the potential of zero wire to ground. It is the most ideal distribution protection switch in the field of civil residence.