Altronix Circ1ATSE is a high voltage AC automatic transfer switch that can be added to any Altronix power supply with a high voltage input. This unit accepts connections from two (2) Independent High Voltage AC sources (Primary and Secondary) and provides a single redundant High Voltage AC Output. If AC Power is lost on the Primary input, the Circ1ATSE automatically transfers to the Secondary AC Power input without delay, ensuring that system security is maintained.