RCBO stands for 'Residual Current Breaker with Over-Current'
Answered by Rupert, Electrical Safety Expert
RCBO stands for 'Residual Current Breaker with Over-Current'. It basically combines the functionality of an RCD (residual current device) and MCB (miniature circuit breaker).
Not all fuseboxes have the room for these to be added so we advise you to speak to a registered electrician who will be able to advise you as to whether they can be added or whether you need a new fusebox, and the costs that this would involve.
To find a registered electrician in your area, you can search here.