Rack-mount Transfer Switches Provides redundant rack mount power to single-corded equipment. APC Rack Automatic Transfer Switches (rack ATS) provide reliable, redundant rack mount power to single-corded equipment. The rack ATS has dual input power cords supplying power to the connected load. If the primary power source becomes unavailable, the rack ATS will seamlessly source power from the secondary source without interrupting critical loads. The Rack ATS has built-in network connectivity, which allows for remote management via Web, SNMP, or Telnet interfaces.