SPD for low voltage, pluggable module, visual fault signalling, module locking, remote fault signalling
- combination of varistor lightning current arrester and encapsulated efficiency spark gap, connected in the 3+1 mode
- installation at the boundary of zones LPZ 0 and LPZ 1 or higher, for objects in LPL III and IV
- for protection against impact of partial lightning currents, induced overvoltages during a lightning strike or switching overvoltages
[FLP-12.5V/3S+1] 3+1 combined lightning current and surge arrester (Type 1 + 2); varistor arrester plus enclosed spark-gap; pluggable with visual and remote indication; installs at LPZ0/1 boundary to guard against partial lightning currents and switching surges.