A protection relay mainly works as a sensor . It may find out the fault location and then signal the operation of the circuit breaker. The circuit breaker cuts off the faulty system from the rest of the system and the continuity of the electrical supply is not hampered. Specifications: Model Name/Number XJ3-D Brand CHINT Voltage 380 VAC Relay Type Voltage Relay Type Voltage Relays Contact Form DPDT Coil Type Latching Package Includes: 1 x Sequence and On-Off Protection Relay XJ3-D