Q2-63M dual-power switchgear is suitable for AC 50HZ or 60HZ, rated working voltage AC400V, rated working current 63A and below dual-circuit power supply system. Selective conversion between two power sources can be made as required. The product has the functions of short circuit, overload, under voltage, voltage loss protection, fire fighting, double dividing and output closing signal. It is especially suitable for the installation and use of lighting lines in office buildings, shopping malls, banks, stations, hospitals and high-rise buildings requiring fire protection.