Technical Parameters Parameter Specification / Value Application Standard IEC/EN 61643-11 Protection Type / Class Type 1 + Type 2 Combined (Class I + II) Rated System Voltage 690 V AC, 3P+N (50/60 Hz) Maximum Continuous Operating Voltage (Uc) 440 V AC (Line-Neutral) / 750 V AC (Line-Line) Impulse Discharge Current (Iimp) 10/350 µs 25 kA (per pole, L/N) Nominal Discharge Current (In) 8/20 µs 30 kA (per pole) Maximum Discharge Current (Imax) 8/20 µs 60 kA (per pole) Voltage Protection Level (Up) @ In ≤ 3.0 kV (Line-Neutral) Response Time < 100 ns Short-Circuit Withstand Rating (SCCR) High - According to IEC 61643-11 Back-up Fuse/Circuit Breaker Mandatory. Typically 125A-160A gL/gG (Consult ABB installation manual for exact rating). Connection Cross-Section Line & Neutral: 25 - 95 mm² (copper) Earth/PE: 35 - 95 mm² (copper) Remote Signaling Optional auxiliary contact for remote status monitoring. Housing Material High-strength thermoplastic (UL94 V-0) Protection Degree (IP) IP20 (for enclosure mounting) Operating Temperature Range -40 °C to +80 °C Status Indication Visual (color flag: green=OK, red=fault) + Optional remote contact Mounting DIN-rail mountable (35 mm) Dimensions (H×W×D) Approx. 288 mm × 90 mm × 75 mm (Confirm with official datasheet) Model Decode PSTX: Premium Series 300: Product variant / Uc rating 690: Rated for 690V systems 70: Nominal discharge current 30 kA