The Schneider Electric A9L08122 is a Type 2 + 3 surge protection cartridge from the Acti9 range, designated C8-460. It is a plug-in MOV-based cartridge rated for 230...400 V AC 50 Hz networks with a maximum continuous operating voltage (Uc) of 460 V. The 8 kA maximum discharge current and 2.5 kA nominal discharge current suit it for secondary surge protection on electrical distribution networks, particularly in IT earthing systems where the neutral is isolated or high-impedance grounded. The <25 ns response time means it clamps fast transients before they reach downstream equipment.
The Type 2 + 3 classification per EN 61643-11 / IEC 61643-11:2011 covers both main distribution board surges and equipment-level protection.
The cartridge measures 18 mm wide, 60 mm deep, and 60 mm high — a compact footprint that plugs into the iPRD8r 3P or 4P base module. The white (RAL 9003) PBT housing carries a red/white flag indicator for local status. Two 9 mm pitch positions align with the base's busbar. Operating temperature range is -25 to 60 °C, storage -40 to 80 °C, with relative humidity 5...90 %. The 0...2000 m altitude limit covers most industrial sites without derating.