The Schneider Acti9 A9L1H602 is a Type 1+2 surge arrester cartridge, part of the iPRD1 25r family, designed for N-PE protection mode on electrical distribution networks. It handles a 100 kA impulse current (common mode) and a 130 kA maximum discharge current, with a response time under 100 ns — meaning it clamps a lightning-induced surge before the energy reaches downstream equipment. The 240 V AC rated operational voltage suits standard single-phase or three-phase TN-S and TT earthing systems, and the 305 V maximum continuous operating voltage gives it headroom for nominal line fluctuations without degrading the GDT (gas discharge tube) element.
The Type 1+2 classification means this cartridge handles both direct lightning strikes (10/350 µs wave) and switching transients — it replaces two separate arresters in one slot. The 100 kA Iimp is the peak current it can safely divert once; the 130 kA Imax is the one-time survival limit. The <1.5 kV protection level (Up) is the voltage let-through at those currents — low enough to protect 240 V equipment with a 1 kV impulse withstand. The 1200 V temporary overvoltage (TOV) withstand for 200 ms on N/PE covers the most common utility fault condition (a broken neutral) without the arrester failing short.
Panel integration
The cartridge plugs into the iPRD1 25r 3P+N base (mounting support: into SPD module). It occupies 4 x 9 mm pitches on a DIN rail, with a 36 mm width and 73.5 mm depth — standard for a four-pole arrester bank. The IP20 finger-safe housing and thermoplastic body (RAL 9003 white) match the Acti9 family aesthetic for commercial panel builds. The green/red flag indicators give local status without opening the panel door.