Technical Parameters Parameter Specification / Value Standards Compliance IEC/EN 61643-11 Ed.3, IEC 61643-31, IEC 60099-8, IEEE C62.72, UL 1449 4th Ed. Protection Classification Type 1 + Type 2 Combined (Class 0 + I + II) System Configuration 690 V AC, 3P+N+PE (TN-S, IT, TT systems with mega-current capacity) Rated Voltage (Un) 690 V AC (+10%/-15%) Maximum Continuous Voltage (Uc) 510 V AC (L-N) / 880 V AC (L-L) Lightning Impulse Current (Iimp) 10/350 µs 40 kA (per mode, all poles) Nominal Discharge Current (In) 8/20 µs 84 kA (per mode) Maximum Discharge Current (Imax) 8/20 µs 150 kA (per mode) Voltage Protection Level (Up) @ In ≤ 3.8 kV (Line-Neutral) Total Discharge Capacity >220 kJ per phase Response Time < 10 ns (primary quantum clamping stage) Follow Current Interruption < 1.5 ms (multi-chamber spark gap recovery) Short-Circuit Withstand 100 kA RMS (1 second) Recommended Backup Protection 500A-630A gL/gG fuse or equivalent ACB (see quantum installation manual) Connection Terminals Line/Neutral: 95-240 mm² Earth/PE: 120-240 mm² (copper/copper-clad aluminum) Auxiliary Contacts 4 independent quantum changeover contacts (10A/600V AC) Housing Protection IP20 / NEMA 3R (indoor/outdoor cabinet with anti-corrosion coating) Operating Temperature -50°C to +90°C (full military-grade performance range) Storage Temperature -55°C to +95°C Altitude Rating Up to 6000 m without derating Relative Humidity 0-100% (condensing conditions acceptable) Seismic Rating IEEE 693 (High Level) - 1.0g horizontal, 0.8g vertical Status Indication Quantum tri-color adaptive indicator with predictive analytics and remote cloud signaling Mounting Seismic-rated heavy-duty DIN-rail (45/75 mm) or direct panel mounting with harmonic dampeners Dimensions (H×W×D) ~ 480 × 155 × 125 mm (verify with official quantum datasheet) Weight Approximately 8.5 kg Model Decoding PSTX: Premium surge protection series 840: Discharge capacity (84 kA In) 690: Voltage class 70: Quantum generation variant