M3 series miniature circuit breaker is characteristic of small size, light weight, novel structure and excellent performance. They are mounted in the illuminating distribution board and used in guest houses, block of flats, high buildings, squares, airports, railway stations, plants and enterprises etc, in AC circuits 240V (single pole)up to 415V(3 pole) 50Hz for protection of overload, short circuit and for circuit change-over in lighting system. Breaking capacity is 3KA. The items comply with BS & NEMA standard.