Acti9 NG125N 3P 32 A C Curve Automatic Circuit Breaker

Miniature three-phase automatic circuit breaker Acti9 NG125N, designed to protect electrical circuits in small commercial applications. Operates using thermal-magnetic technology with C curve, suitable for currents above 0.1 A. Its breaking capacity Icu reaches up to 50 kA at 220...240 V AC, 25 kA at 380...415 V AC, and 20 kA at 500 V AC, ensuring safety under overload or short-circuit conditions.

Technical Features

• Number of poles: 3P
• Number of protected poles: 3
• Rated current [In]: 32 A at 40 °C
• Supply type: Alternating current AC
• Tripping curve: C
• Breaking capacity Icu: 20 kA (500 V AC), 25 kA (380...415 V AC), 50 kA (220...240 V AC)
• Service breaking capacity [Ics]: 37.5 kA (220...240 V AC), 18.75 kA (380...415 V AC), 15 kA (440 V AC), 7.5 kA (500 V AC), 20 kA (≤375 V DC)
• Rated operating voltage [Ue]: 220...240 V AC, 380...415 V AC, 440 V AC, 500 V AC
• Rated insulation voltage [Ui]: 690 V AC
• Surge voltage withstand [Uimp]: 8 kV
• Supply frequency: 50/60 Hz
• Contact position indicator: Yes
• Local indicators: On/off indication, trip indicator
• Mounting: Adjustable clip, symmetrical 35 mm DIN rail mounting support
• Connections: Tunnel-type terminals (1.5…50 mm² rigid, 1…35 mm² flexible)
• Stripping length: 20 mm
• Torque: 3.5 N·m
• Lockable: Yes, with integrated lock
• Mechanical durability: 20,000 cycles
• Electrical durability: 10,000 cycles
• Protection degree: IP20, IK05
• Contamination degree: 3
• Overvoltage category: IV
• Tropicalization: 2
• Operating ambient temperature: -30…70 °C
• Storage ambient temperature: -40…70 °C
• Standards: Icu
• Market segment: Small commercial
• Sustainable offering status: Green Premium product
• Compliant with REACh without SVHC: Yes
• EU RoHS Directive: Compliant
• China RoHS: Proactive declaration
• Waste electrical and electronic equipment (WEEE): Disposal according to specific system in EU