The Schneider Electric A9L16082 is a Type 1+2 surge arrester cartridge from the Acti9 iPRD1 range, designed for the electrical distribution network. It handles a nominal discharge current of 20 kA and clamps surge voltage below 1.5 kV, which means it protects downstream equipment from both direct lightning strikes (Type 1) and switching transients (Type 2) in one device.
This cartridge plugs into a compatible SPD base module on a DIN rail. At 18 mm wide (1 module width), it fits tight panel layouts without crowding adjacent breakers or contactors. The white (RAL 9003) PBT housing carries an IP20 front-face rating, so it's fine for enclosed distribution boards where the front cover provides the real ingress protection.
The <25 ns response time means it starts clamping almost instantly — no delay that would let a spike through to sensitive electronics.
