Specifications Specification Details / Typical Value Product Name / Model Schneider Electric Acti9 iPRU 40r 4P Surge Protective Device Device Type Surge Protective Device (SPD) / Surge arrester Number of Poles 4‑pole (4P) — three phases + neutral protection Surge Protection Class Type 2 SPD (for protection at distribution level) Surge Protection Technology MOV (Metal Oxide Varistor) Rated Operational Voltage (Ue) 230/400 V AC ±10 %, 50/60 Hz Nominal Discharge Current (In) 15 kA per mode (common mode — L/PE and N/PE) Maximum Discharge Current (Imax) 40 kA per mode (common mode — L/PE and N/PE) Maximum Continuous Operating Voltage (Uc) 460 V AC (common mode) Voltage Protection Level (Up) ≤2.2 kV (common mode) Remote Signalling 1 change‑over (C/O) contact for fault indication Mounting Type DIN‑rail clip‑on Modular Width 8 modules (8 × 9 mm) Degree of Protection IP40 (front); IP20 (built‑in) Operating Temperature Range –25 °C to +60 °C Storage Temperature Range –40 °C to +85 °C Compatible Earthing Systems TT, TN‑S Typical Dimensions Width ~72 mm × Height ~85 mm × Depth ~69 mm Weight ~0.45 kg Applicable Standards IEC/EN 61643‑11 surge protection standards