A relay is an electric switch operated by a signal in one circuit to control another circuit. Relay may also refer to: == Electrical engineering == Protective relay, a device designed to trip a circuit breaker when a fault is detected.
A relay is an electric switch operated by a signal in one circuit to control another circuit. Relay may also refer to: == Electrical engineering == Protective relay, a device designed to trip a circuit breaker when a fault is detected.
Source: Wikipedia "Relay (disambiguation)" · CC BY-SA 4.0
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