American Power Conversion APC 1U Rack 16A Automatic Transfer Switch - 3840VA AP7722

APC Rack Automatic Transfer Switch (ATS), also known as the Redundant Switch, is a high availability switch. The Rack ATS is designed to supply power to the connected load from a primary AC source. If that primary source becomes unavailable for whatever reason, the Rack ATS will automatically begin sourcing power from the secondary source. The transfer time from one source to the other is seamless to the connected equipment.