Type 7P.09 surge arresters, SPD Type 1 + 2 with high discharge capacity and no subsequent follow-on current – Three-phase applications.
SPD Type 1, gas spark gap for N-PE installation in three-phase applications, in 3 + 1 configuration. Equipped with remote contact signaling of the presence of the GDT. Upside down mount technology. Replaceable modules.

Features include:

• SPD suitable for low voltage systems for protection against overvoltages caused by direct discharges, induced and operating overvoltages
• To be installed on the border between zones LPZ 0 and LPZ 1
• 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
• Replaceable modules
• Upside down mount technology (thanks to the double marking of the terminals and the new restraint system of the replaceable module that allows its reversal)
• Visual indicator of the varistor status: functional/to be replaced
• Double screw terminal
• Signaling with remote contact of the varistor status: presence, functioning, to be replaced.
• In accordance with EN 61 643-11
• 35 mm rail (EN 60715) mounting, 36 mm per pole