Type 2 / Class II / Class C Surge Arrester is PIIIM in accordance to EN 61643-11 and IEC 616431. Entire device comprises base part and pluggable module. The application of the arrester is in the Lightning Protection Zones Concept at the LPZ 1-2 boundaries (in accordance to IEC 1312-1 and EN 62305) for the purpose of equipotential bonding and removal of transient over voltage that arises during atmospheric discharges or switching processes. PIIIM together with B20M can be used in TNS and TT systems.
The design of latest Type 2 / Class II / Class C Surge Arrester has set new standards with regard to user friendliness and safety. PIIIM series type 2/class II arrester comprises a protective circuit, zinc oxide varistors and a monitoring device for thermal disconnecting control. The base part is properly and strongly fixed by using the pluggable modules. The modules can not be loosen either by vibration during transport or the enormous electromagnetic discharge forces. The modules can be easily replaced during maintenance work without use of any tool; one can simply just pull them out.
Surge arresters with a monitoring device in the varistor are authentic technology with regard to safety. Hakel surge arresters can evaluate discharge current intensity and heavy-duty varistor's surface temperature with “Thermal Disconnecting Control” mechanism. The proper functioning of all protective circuits and varistors are visually indicated by the green and red indicator flags. In addition, there are three-pole remote signaling terminals (Potential Free Contact). As it has a floating changeover contact, it is possible to use the remote signal as a make or break contact based on the circuit concept.
>> High discharge capacity: Heavy-duty zinc Oxide Varistors/ GDT >> 2-pole arrester >> 1-phase power supply network TN-S, TT >> LPZ1-2 >> I max 50kA >> M-spare module >> DS-remote monitor (optional)