PIIIM-275/1+1 Vseries is a two-pole, metal oxid varistor surge arrester combined with gas discharge tube, Type 2 according to EN 61643-11 and IEC 61643-11. These arresters are recommended for use in the Lightning Protection Zones Concept at the boundaries of LPZ 1-2 (according to IEC 1312-1 and EN 62305), where they provide the equipotential bonding and discharge of the switching overvoltage, which is generated in power supply systems entering the building. The main use of PIIIM-275/1+1 Vseries arrester is in all kinds of industry,residential and administration buildings. They are to be placed into the subsidiary switchboards or control boxes.

The marking M specifies a type of construction with removable module. The marking of DS specifies a version with remote monitoring.