OVR T1-T2 3L 12.5-440s P QS Surge Protective Device

Combined lightning and surge protection device SPD type 1 + 2 for protection of consumer systems with low voltage against lightning currents and overvoltage. Tested SPD type 1 and type 2 according to DIN EN 61643-11. The devices can be used as surge protection devices according to VDE 0100 part 443 and part 534 as well as within the framework of the lightning protection zone concept. The devices are compatible with the System pro M compact series. SPD with "TS" is optionally equipped with a potential-free switch switch. The variants with "spare varistor" (s) provide extra protection for the system, as the surge arrester is not completely disconnected from the mains at the end of its life, but with an extra smaller varistor still guarantees basic protection and the system is still protected until the surge arrester is replaced.