Series NDQ1 intelligent duplicate power supply automatic switching unit commonly called as A.T.S-automatic transfer switch ( hereinafter called as " Unit" is suitable for transferring between two circuit of power supply ( working power supply, standby power supply) with rated working voltage up to AC 400V, rated current up to 630A, frequency of 50Hz, .

NDQ1 series transfer switch take the molded case circuit breaker as the implementation component ; NDQ2 series transfer switch take the miniature circuit breaker as the implementation component., customer can make their choice basis the requirement.

This unit is suitable for important places where power- breaking is not allowable such as hospital, mall, bank, hotel, high building, military and fire protection facilities.