Can you use earth leakage relay in 200A load?

Yes, you can use an earth leakage relay (ELR) with a 200A load, provided that the relay is rated to handle that current. It is essential to select an ELR with an appropriate current rating and sensitivity to effectively protect against earth faults in your specific application. Ensure that the relay is properly installed and coordinated with the overall electrical system to ensure safety and reliability.