Lightning current arresters flp-12,5 v3+1 flp-12,5 v3s+1 spd type 1 and type 2 – lightning current arrester replaceable varistor module, visual fault signaling 3-pole varistor lightning current arrester to be installed in low-voltage distributions at the boundary of lpz 0–lpz 1 zones and higher to prevent over voltage effects induced during a lightning strike and to prevent switching over voltage. Optional remote status signalling (s).