Specifications General Product Type: Surge Protective Device (SPD) Series / Family: PRD Surge Protection Model: PRD 40kA 3P+N Configuration: 3P+N (three phases + neutral) Mounting: DIN-rail Application: Surge protection for three-phase low-voltage electrical systems Surge Protection Ratings Maximum Discharge Current (Imax): 40 kA (peak surge handling capability) Nominal Discharge Current (In): Typically rated for 20kA to 40kA per IEC standards Response Time: <100ns Surge Technology: Varistor or spark gap technology to handle large transients Protection Modes: Phase-to-neutral, phase-to-earth, neutral-to-earth Electrical Ratings Rated Operational Voltage (Ue): 230/400 V AC (three-phase + neutral) Rated Frequency: 50/60 Hz Nominal Voltage (Un): 400 V AC Rated Impulse Withstand Voltage (Uimp): Typically 4kV Rated Short-Circuit Withstand Current (Isc): Up to 25kA Mechanical & Environmental Housing: Compact, modular, and robust design for durability Terminal Connections: Screw clamp or spring-loaded for secure conductor attachment Operating Temperature: -40 °C to +70 °C Degree of Protection: IP20 (front face) Mounting: Compatible with standard DIN rails for easy panel integration Performance & Safety Standards Compliance: IEC 61643-1, UL 1449, CSA C22.2 No. 269 Protection Benefits: Provides protection from lightning strikes, switching transients, and other electrical disturbances Mechanical Durability: Designed for over 100,000 operations