KCQ2 dual power automatic transfer switch is suitable for AC 50Hz, rated voltage to 400V, rated current of 63 ~ 800A the dual power supply system (power grid - Power or power - generators), because of the way to conduct the power supply between abnormal automatic conversion, to ensure continuity of supply, reliability and security, primarily for hospitals, shopping, banking, metallurgy, chemical industry, fire and other high-rise buildings and an important occasion not to be power.