Combined arrester T1+T2+T3 4P Iimp 12.5kA TT/TNS. Combined arrester for use in the pre-meter area in accordance with VDE-AR-N 4100. Arrester type 1 + type 2 in accordance with DIN EN 61643-11 (VDE 0675-6-11). Follow-current-free, encapsulated spark gap technology. Can be mounted directly on 40 mm busbar system. Compatible with feed adapter and busbar box for voltage tapping for RfZ and APZ. Optional remote signaling contact can be retrofitted.