Dual Power Automatic Transfer Switch, Disconnector manufacturer / supplier in China, offering Nlq4-125/4p100A125A63A Dual Power Supply 400V/690V PC Level Isolated Type Dual Power Automatic Transfer Switch Fire Protection PC Isolation Two in One out ATS, Microsecond-Level ATS Dual Power Automatic Transfer Switch Series Energy Storage Battery for Mains Power Use in Household Applications, 220V, Dual Power ATS with Manual-Automatic Switching for Fire Protection, with PC-Level Isolation and Two Input One Output Configuration with 4-Pole 63A100A125A and so on.