Combined arrester T1+T2 4P Uc 350V Iimp 25kA Up 1.5kV TNS/TT remote signaling contact. Modular combined arrester consisting of a rotatable base part and plugged-in protection modules with 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). Simple, tool-free protection module change thanks to module locking system with function/fault display by marking in the viewing window. Encapsulated, non-blow-out spark gap design. Modular installation device in accordance with DIN 43880, protection module coding, through terminals for all conductor connections.