A Power Distribution Relay is a protective device employed in electrical distribution systems to monitor the functioning of power lines and associated equipment. It is programmed to detect any anomalies—such as short circuits, overcurrent, overvoltage, or undervoltage—and initiate appropriate actions to protect the system. The relay is typically integrated with circuit breakers, switchgear, or other control equipment to disconnect a faulty section of the circuit, ensuring that the remaining parts of the electrical network continue to operate smoothly.