M (R) series distribution cabinet is widely used in hotels, apartments, high-rise buildings, harbor ports, railway stations, airports, warehouses, hospitals, factories and mining fields. It is used in building lighting and small power control circuit, when AC is 50Hz, 240V, single-phase and three-phase AC 450V and below, current 250A and below. It offers line overload protection, short circuit protection and line switching. The device is suitable for civil use in places where non professional personnel can enter.