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This FAQ has been written for NEAL (North East Africa and Levant) region. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.

For the Residual current circuit breaker (RCCB) of type Domae, is it possible to use RCCB of Domae type with MCB of Acti 9 or it must be used with MCB of Domae type ?

The RCCB is used for protection against earth leakage current,
The circuit must be protected against short circuit currents and overload currents by separate MCB
There are no restrictions to use certain MCB type with certain RCCB so the Domae RCCB can be used in a circuit protected by MCB either Acti 9 or Domae type