Specifications Parameter Specification Product Series Acti 9 iPRF1 (Type 1 SPD Series) Model iPRF1 3P 12.5R Type / Class Type 1 (Class I) – Withstands partial direct lightning current (10/350 µs wave). Configuration 3 Poles (3P) – Protects the three phase conductors (L1, L2, L3). Lightning Current Impulse (Iimp) 12.5 kA (10/350 µs wave, per pole) Nominal Discharge Current (In) 25 kA (8/20 µs wave, per pole) Max. Discharge Current (Imax) 50 kA (8/20 µs wave, per pole) Voltage Protection Level (Up) ≤ 2.5 kV (at In, typical for 400V systems) Rated Voltage (Uc) 440V AC (L-L) for 400V AC three-phase systems. Follow Current Interrupting Rating (Ifi) Typically 25 kA rms (for 50Hz systems), ensuring safe shutdown after a surge. Key Feature "R" Integrated Thermal Disconnector: • No external backup fuse required for standard installations (simplifies design and saves space). • Automatically disconnects the SPD from the circuit in case of internal thermal overload due to end-of-life or sustained overvoltage, preventing fire risk. Status Indication 3-color LED indicator: • Green: Functional • Orange: Warning/End of Life approaching • Red: Faulty/Disconnected Remote Signaling Built-in changeover contact (NO/NC) for remote alarm. Response Time < 100 ns Mounting DIN Rail (35 mm) Width 54 mm (3-module width) Standards IEC/EN 61643-11 Operating Temperature -40°C to +80°C