About RCCB
RCCB (residual current circuit breaker) detects current difference between neutral and live conductors. The difference is also known as ‘residual current’. Proper functioning circuits will have balanced neutral and live current and the residual current occurs when there is some potential shock hazard or fault. The device is an RCD i.e. residual current device class of item and circuit breaker, which is a part of its name, indicates that the electrical product sits within costumer unit with the other CBs (circuit breakers).
