Single-pole, coordinated lightning current arrester DEHNbloc Maxi CI, type 1 according to EN 61643-11 on a spark gap basis with integrated arrester backup fuse. High follow current extinguishing capacity 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.