H. K. Electric Co.

A Protection Relay is an electromechanical or electronic device designed to detect faults in electrical circuits and initiate appropriate action, such as triggering a circuit breaker to isolate the faulty section. It plays a crucial role in safeguarding power systems by detecting abnormal conditions like overloads, short circuits, earth faults, phase failures, voltage variations, or frequency anomalies. These relays are widely used in substations, industrial plants, motor protection setups, and power distribution networks.