Wylex RCBO is a residual current circuit breaker with overcurrent protection device, installed within a consumer unit to monitor electrical circuits and keep them running safely. These devices work to disconnect the circuit if it's unbalanced and are commonly used where there is a need to combine protection against overload, short circuit and earth leakage currents. A great range of curve types, phases and amp ratings are available from top trade brands to suit the needs of the installation.