General
Number of poles	4
Lightning impulse current (10/350 µs)	12.5
Voltage protection level L-N	2.8
Voltage protection level L-PE	1.4
Voltage protection level N-PE	1.4
Construction size	4 modular spacing
Degree of protection (IP)	IP20
System configuration DC
System configuration IT
System configuration TN
System configuration TN-C
System configuration TN-C-S
System configuration TN-S
System configuration TT
System configuration other
Remote signalling
Integrated backup fuse
Energy-coordinated protection effect with regard to the terminal equipment

Combined lightning and surge protection device SPD type 1+2, for protecting low-voltage consumer systems against lightning currents and surges. 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. The SPDs with 'TS' are optionally equipped with a potential-free changeover contact. The versions with 'reserve varistor' (s) offer additional protection for the system in that at the end of its service life the surge arrester is not completely disconnected from the mains, but basic protection is still guaranteed by an additional smaller varistor and the system is therefore still protected until the surge arrester is replaced.