Tested type 1 + type 2 + type 3 combined arrester according to IEC 61643-11 for TN-C systems (3+0 configuration); can be installed completely without tools thanks to click + power connection method for 40 mm busbar systems and push-in earthing terminal; for use in the main power supply system according to IEC 60634-4-44 clause 443 of buildings (also in case of overhead line supply, without lightning protection system). A suitable cover clip according to DIN VDE 0603-1 for every standard meter panel is included in delivery.