Surge arrester T1+T2+T3 4P 12.5kA FM TNS/TT. Combined arrester with integrated protection modules and remote signaling contact for monitoring device (potential-free change). Arrester type 1 and type 2 in accordance with DIN EN 61643-11 (VDE 0675-6-11) with type 3 protection. With function/defect display by signaling in the viewing window. Modular installation device in accordance with DIN 43880.