PIIIM-320/1+1 V series is a two-pole, metal oxide varistor surge arrester combined with gas discharge tube, Type 2 & Class II according to EN 61643-11 and IEC 61643-1. 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-320/1+1 V series 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.
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