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.
As per IEC standards or RCD devices (RCCB with IEC610008 and RCBO with IEC61009), the tolerance is -15% / +10%.
So , if the RCCB has a Un = 400V, it will be operational at 440V max.but taking into consideration that there is no fluctuations in the system voltage as 440V is the maximum voltage it can withstand.
Released for:Schneider Electric Egypt and North East Africa
