Schneider Electric 18643 NG125N Circuit Breaker 3P C100A, 25kA

The Schneider Electric Acti 9 NG125N (part number 18643) is a 3-pole 100 A thermomagnetic miniature circuit breaker intended for electrical power distribution on AC and DC networks.

• Product family: Acti 9 NG125; device designation NG125N
• Poles: 3P (3 protected poles); thermomagnetic protection unit; trip curve C
• Rated current [In]: 100 A at 40 °C
• Rated voltage [Ue]: 220–240 V, 380–415 V, 440 V, 500 V AC (50/60 Hz); ≤375 V DC
• Ultimate breaking capacity [Icu]: 50 kA at 220–240 V AC; 25 kA at 380–415 V AC; 20 kA at 440 V AC; 10 kA at 500 V AC; 20 kA at ≤375 V DC — all per EN/IEC 60947-2
• Service breaking capacity [Ics]: 37.5 kA at 220–240 V AC; 18.75 kA at 380–415 V AC; 15 kA at 440 V AC; 7.5 kA at 500 V AC; 20 kA at ≤375 V DC — per EN/IEC 60947-2
• Rated insulation voltage [Ui]: 690 V AC 50/60 Hz; rated impulse withstand voltage [Uimp]: 8 kV — per EN/IEC 60947-2
• Utilisation category: Category A per IEC 60947-2; suitable for use as isolator per IEC 60947-2
• Mounting: 35 mm symmetrical DIN rail, clip-on system; vertical handle position
• Connection terminals: Tunnel type — 16–70 mm² rigid / 10–50 mm² flexible; strip length 20 mm; tightening torque 6 N·m
• Enclosure protection: IP20 per IEC 60529; IK05 per EN/IEC 62262
• Dimensions: 103 mm (H) × 81 mm (W) × 81 mm (D); weight 0.72 kg
• Endurance: 20,000 mechanical cycles; 5,000 electrical cycles
• Locking: Lockable handle with integrated locking provision