Single-pole, coordinated DEHNbloc Maxi CI lightning current arrester, type 1 according to EN 61643-11, based on spark gaps with integrated arrester backup fuse. High follow current extinguishing capability and follow current limitation thanks to RADAX Flow technology. For protecting low-voltage consumer systems against overvoltages, even in the event of direct lightning strikes. For use in the lightning protection zone concept at the interfaces 0A - 1.