MLM-AFCI Arc Fault Circuit Interrupter (AFCI) is a new fire protection electrical device. Traditional MCB can only protect overload and short circuit, but cannot detect dangerous series arc faults. AFCI can identify hidden arc faults caused by aging wires, loose connections and damaged insulation, and cut off power quickly to prevent electrical fires. Rated current 16A, rated voltage AC220V 50Hz. It is widely used in residential buildings, hotels, office buildings and dormitories.