Parameters Specification Details Product Series Acti9 iPRF1 surge protection devices Product Name iPRF1 12.5r Surge Arrester Device Type Surge Protective Device (SPD) Configuration 3P + N (three phases + neutral) Surge Protection Class Type 1 + Type 2 Surge Protection Technology MOV + GDT (Metal Oxide Varistor + Gas Discharge Tube) Rated Operational Voltage (Ue) 230/400 V AC ±10 % (50/60 Hz) Maximum Continuous Operating Voltage (Uc) Differential mode: 350 V L/N Common mode: 255 V N/PE Nominal Discharge Current (In) 25 kA L/N (differential mode) / 25 kA N/PE (common mode) Maximum Discharge Current (Imax) 50 kA Impulse Current (Iimp) Differential mode: 12.5 kA L/N 6.25 A·s Common mode: 50 kA N/PE 25 A·s Voltage Protection Level (Up) ≤ 1.5 kV (both common and differential modes) Remote Signalling 1 change‑over contact (1 C/O) for fault status Mounting DIN‑rail (clip‑on), 9 mm module width (8 modules) Operating Standards IEC/EN 61643‑11 Surge Protective Devices Earthing Systems Supported TN‑S, TT Degree of Protection Front: IP40; Built‑in: IP20 (typical) Operating Temperature –25 °C to +60 °C (typical) Weight ~590 g Material / Color PA6 plastic, White (RAL 9003)