US Patent 8729730 Automatic transfer switch with transfer inhibitor

Apparatuses and methods for providing a capability to prevent an automatic transfer switch from automatically switching from a primary to a secondary power source are illustrated. The automatic transfer switch includes a transfer inhibitor that is configured to receive a transfer inhibit signal. In response to receiving the transfer inhibit signal, a switching logic is configured to prevent a contactor of the automatic transfer switch from automatically connecting the secondary source to a load.