Upper section: Combined lightning current and surge arrester type 1+2 (class B+C) according to EN 61643-11 for lightning protection equipotential bonding according to 0185-305 and surge protection according to 0100-443. Optical function display protection level < 1 kV max. required backup fuse 160 A. Encapsulated, non-blow-out varistor arresters. 5 year warranty
