An automatic circuit breaker is increasingly being used as an alternative to the earlier fuse. Both protect against short circuits and overloads, but whereas a circuit breaker can simply be reset, a fuse always needs to be replaced.
If you have a power cut, you should first check whether the problem is general or individual. Depending on the situation, you may be able to resolve the problem yourself. Otherwise, you have to contact Sibelga or an electrician.