PC type dual-power supply automatic transfer switch (ATST)is the latest company technology development of high-tech products.It conforms to GB/T14048/.1-2006,GB/T14048.11-2008,and also with "high-rise building fire norms" and "emergency lighting design guide" etc.It is suitable to AC 690V,rated frequency 50Hz/60Hz.

Two section automatic transfer switch,change from one power supply connect to another immediately on the intermediate open position when the switch get the switching signal.

Three sectionautomatic transfer switch when get the switching signal can change from one power supply connect to another or change from one power supply connect to the intermediate immediately or affter a preset delay time.

The class of S or L seriesswitch:PC

The front plate wiring

Rated voltage AC660V/690V,AC380V/400V,AC110V are special delivery.