Editing Residual-current device (section)

==RCBO==
A pure RCD will detect imbalance in the currents of the supply and return conductors of a circuit. But it cannot protect against overload or [[short circuit]] like a fuse or a miniature circuit breaker (MCB) does (except for the special case of a short circuit from {{Not a typo|line}} to ground, not {{Not a typo|line}} to neutral).

However, an RCD and an MCB often come integrated in the same device, thus being able to detect both supply imbalance and overload current. Such a device is called an ''RCBO'', for ''residual-current circuit breaker with overcurrent protection'', in Europe and Australia, and a ''GFCI breaker'', for ''ground fault circuit interrupter'', in the United States and Canada.