Asco 300 Series 3000 Amp Automatic Transfer Switch - 3 Pole

True double-throw operation: The single solenoid design is inherently inter locked and prevents contacts from stopping between sources or from being in contact with both sources at the same time. There's no danger of the Series 300 ATS transferring loads to a dead source because the unique ASCO single-solenoid operator derives power to operate from the source to which the load is being transferred. Easy-to-read flush-mounted control and display panel provides LED indicators for switch position and source availability. It also includes test and time-delay bypass switches as standard features. Standard engine exerciser for weekly automatic testing of engine generator set with or without load. Adjustable time-delay feature prevents switch from being activated due to momentary utility power outages and generator dips.