A 4 Pole RCCB is an electrical protection device designed to detect and disconnect electrical circuits from the power supply in the event of residual currents or leakage currents. It monitors the currents flowing through the live and neutral conductors as well as through the protective earth conductor (if present). They are installed at the distribution board or consumer unit to protect circuits supplying power to machinery, motors, sensitive electronic equipment, and other electrical devices. 4 Pole RCCB are critical components in ensuring electrical safety and compliance with regulations in environments where three-phase power distribution is used.