Patent ID: 7468566

Claim:
An Automatic Transfer Switch (ATS), comprising: a switch configured to connect one of two sources to a load; a mechanical drive configured to drive the switch between a first position connecting the switch to the first source, second position connecting the switch to the second source, and a third position in which the switch is isolated from the first and second sources; at least one actuator in mechanical communication with the mechanical drive to cause the mechanical drive to move on command; and first, second, third and fourth solid state control relays, each of which is responsive to respective first, second, third and fourth external signals and productive of respective first, second, third and fourth control signals, wherein the at least one actuator is responsive to the respective first, second, third and fourth control signals of the respective first, second, third and fourth solid state control relays to cause the mechanical drive to drive the switch from the first position to the third position, from the third position to the second position, from the second position to the third position and from the third position to the first position, respectively.