The Schneider Electric A9L15598 is an Acti9 iPF8 Type 2+3 surge arrester — a 3-pole MOV-based unit rated for 400 V AC (+/- 10 %) at 50/60 Hz, with a maximum continuous operating voltage of 340 V common mode L/PE and N/PE. It clips onto a DIN rail, taking up 8 x 9 mm pitches (72 mm wide), and stands 81.4 mm tall with a depth of 69 mm. The white (RAL 9003) housing carries the OVE, NF, and KEMA-KEUR quality labels.
The tunnel terminals accept 2.5 to 35 mm² on both the line and load side, and the tightening torque is 2.5 N·m. That range covers most sub-distribution feeds without needing an adapter.
Rated as Type 2 + 3, this unit handles both the main surge energy (nominal discharge 2.5 kA common mode L/PE and N/PE) and the residual voltage clamping needed for sensitive loads downstream — the open-circuit voltage [Uoc] is 10 kV for type 3 common mode. Maximum discharge current is 8 kA L/PE, and the total discharge current [I total] is 25 kA. The voltage protection level [Up] stays under 1.1 kV for type 3 L/PE. That dual classification means you can install it as the sole SPD in a small commercial panel (TN-C earthing system) and skip a dedicated Type 3 at the load.
Compliant with EN 61643-11 and IEC 61643-11, the standards for low-voltage surge protective devices. The IK03 impact rating (per IEC 62262) means it resists 0.35 J impacts — enough for panel handling, not for exposed outdoor mounting. Relative humidity tolerance is 5 to 90 %. Maximum operating altitude is 2000 m.