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PRD 3P+N 20KA

The Schneider Electric PRD is a Type 1+2 Combined Surge Protective Device (SPD) with a 3P+N (3-phase + neutral) configuration and a maximum discharge current (Imax) of 20 kA per phase. Designed for installation at the service entrance or main distribution board, it provides the first and main line of defense against direct or indirect lightning strikes and large switching transients in low-voltage AC power systems.

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Parameter Specification Product Range / Series PRD (Combined Type 1+2 SPD) Type / Class Type 1+2 (Class I + II) Combined SPD Configuration 3P+N (3 phases + neutral) Rated Network Voltage 230/400V AC, 50/60 Hz Max. Continuous Operating Voltage (Uc) 255/440V AC (L-N / L-L) Lightning Impulse Current (Iimp) - Type 1 12.5 kA (10/350 µs wave) per pole Maximum Discharge Current (Imax) - Type 2 20 kA (8/20 µs wave) per pole Voltage Protection Level (Up) ≤ 2.5 kV (typical at In) Nominal Discharge Current (In) 10 kA (8/20 µs) Status Indication Visual indicator (green: OK, red: faulty) Remote Signaling Optional changeover contact (alarm) Backup Protection Integrated thermal disconnector; requires an external backup fuse (e.g., 125A gL/gG) as per instructions. Connection Screw terminals for conductors (typically up to 50 mm²). Mounting DIN Rail (35mm) or direct mounting Standards IEC 61643-11, EN 61643-11 Operating Temperature -40°C to +80°C Protection Degree (IP) IP20 (when mounted in an enclosure)