Technical Parameters Parameter Specification / Value Standard Compliance IEC/EN 61643-11, IEC 61643-31 Protection Classification Type 1 + Type 2 Combined (Class I + II) System Configuration 690 V AC, 3P+N (TN-S, TT systems) Maximum Continuous Voltage (Uc) 440 V AC (L-N) / 760 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 25 kA (per mode) Nominal Discharge Current (In) 8/20 µs 47 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 80 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.0 kV (Line-Neutral) Response Time < 25 ns (varistor stage) Short-Circuit Withstand Capacity 50 kA (IEC 61643-11 compliant) Recommended Backup Protection 200A gL/gG fuse or equivalent circuit breaker (consult installation manual) Connection Terminals Line/Neutral: 35-120 mm² Earth/PE: 50-120 mm² Auxiliary Contacts 1 changeover contact (NO/NC) for remote monitoring Housing Protection IP20 (for indoor cabinet installation) Operating Temperature Range -40°C to +80°C Status Indication Multi-color visual indicator + remote contact signaling Mounting DIN-rail (35 mm) or direct panel mounting Dimensions (H×W×D) ~ 360 × 110 × 85 mm (confirm with official datasheet) Model Decoding PSTX: Premium series 470: Product platform (47 kA In) 690: Voltage rating 70: Configuration variant