Specifications General Product Type: Surge Protective Device (SPD) Series / Family: EA9L Model: EA9L408F400 Application: Surge protection for three‑phase low‑voltage electrical systems (with neutral) Mounting: DIN‑rail installable Pole Configuration: 3P+N (three phases + neutral) Surge Protection Ratings Maximum Discharge Current (Imax): 40 kA (peak surge current capability) Nominal Discharge Current (In): 20 kA (nominal surge current capacity) Protection Level (Up): Around 1.5 kV (voltage clamping level for surge suppression) Response Time: Very fast (nanosecond range typical for SPDs) Protection Class: Type 2 surge arrester (for installation on distribution boards) Electrical Ratings Rated Operational Voltage (Un): 230/400 V AC (common three‑phase low‑voltage distribution) Maximum Continuous Operating Voltage (Uc): ~440 V AC Earthing System: TT and TN‑S compatible Rated Frequency: 50/60 Hz Mechanical & Environmental Housing: Compact, modular design for panel integration Terminal Connections: Screw or clamp type for secure wiring Degree of Protection: Typically IP20 (indoor distribution panel) Operating Temperature Range: Suitable for standard indoor electrical environments Installation: 35 mm DIN‑rail compatible