GTQ5 series dual power automatic transfer switch(ATSE), which combines switch and logic control, make machine electricity incorporate real. It was applied in industry and enterprise electrical equipment rated insulated voltage up to 1000V, rated frequency 50HZ, rated voltage up to 660V, promissory heat current up to 1600, was used in power supply system for main power and reserve power automatic transfer, or for two loading equipment automatic transfer and safe insulation; was wildly used in hospital, store, bank, high building, coal mine, telecom, iron ore, super-high way, airport, industry assembling line and military facility etc important occasion where the power breaking is not allowed.