What is Residual Current Relay? The device that instantly detects, detects and opens the leakage current in the circuit, protects people or the installation, and prevents possible hazards is called a leakage current relay.

Often referred to by designation as a residual current switch or residual current fuse.

The duty of the residual current relay has a very important place.

This is because the residual current relay is of vital importance in the electrical installation.