Combined arrester T1 + T2 3P 37.5 kA TNC. For use in the pre-meter area in accordance with VDE-AR-N 4100. Arrester type 1 + type 2 in accordance with EN 61643-11. Powerful and terminal-friendly RAC spark gap technology. Can be mounted directly on a 40 mm busbar system without the need for any tools. Compatible with feed-in adapter.