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7P Series
Type 7P.44 - surge arrester (SPD)
Function and features
Type 2 7P.44 surge arrester for three-phase TT and TN-S systems with neutral. Varistor protection + GDT L1, L2, L3-N + spark gap protection N-PE Replaceable modules. Signaling with remote contact of the varistor status.
Series Features:
- Suitable for AC systems/applications for protection against induced and switching overvoltages
- To be installed on the border between zones LPZ 1 and LPZ 2
- Combination of high-performance varistors and gas spark gaps (GDT) which ensure: – high discharge currents – high insulation resistance which eliminates the leakage current – absence of subsequent follow-on current
- Extremely low residual voltage
- Visual indicator of the varistor status – functional/to be replaced
- Signaling with remote contact of the varistor status. Connector (07P.01) included in the package
- Replaceable modules
- Compliant with EN 61643-11: 2012
- Mounting on 35 mm rail (EN 60715), 17.5 mm per pole
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