Acti9 NG125N 2P 16 A C Curve Automatic Circuit Breaker

Miniature automatic circuit breaker from the Acti9 NG125N range, designed to protect electrical circuits in small commercial and residential installations. Provides thermal and magnetic protection with C curve, suitable for nominal currents of 16 A at 40 °C. Its breaking capacity reaches up to 25 kA at 380–415 V AC, ensuring safety in short-circuit cases.

Technical Features

• Number of poles: 2P
• Number of protected poles: 2
• Rated current [In]: 16 A at 40 °C
• Network type: AC
• Tripping unit technology: Thermal-magnetic
• Curve code: C
• Breaking capacity [Icu]: 10 kA at 500 V AC, 20 kA at 440 V AC, 25 kA at 380–415 V AC, 50 kA at 220–240 V AC, 20 kA at ≤250 V DC
• Service breaking capacity [Ics]: 37.5 kA (75 % of Icu) at 220–240 V AC, 18.75 kA (75 % of Icu) at 380–415 V AC, 15 kA (75 % of Icu) at 440 V AC, 7.5 kA (75 % of Icu) at 500 V AC, 25 kA (100 % of Icu) at ≤250 V DC
• Rated operational voltage [Ue]: 380–415 V AC, 500 V AC, 220–240 V AC, 440 V AC, ≤250 V DC
• Rated insulation voltage [Ui]: 690 V AC
• Surge voltage withstand [Uimp]: 8 kV
• Magnetic trip limit: 8 x In
• Service category: A
• Contact position indicator: Yes
• Local indicators: On/off indication, trip indicator
• Control type: Handle, manual trip test
• Mounting support: Symmetrical 35 mm DIN rail
• Step size: 9 mm
• Height: 103 mm
• Width: 54 mm
• Depth: 81 mm
• Weight: 0.48 kg
• Mechanical durability: 20 000 cycles
• Electrical durability: 10 000 cycles
• Lockable: Integrated lock
• Connections: Tunnel terminals (1.5–50 mm² rigid, 1–35 mm² flexible)
• Stripping length: 20 mm
• Tightening torque: 3.5 N·m
• Earth leakage protection: Independent lock
• Protection degree IP: IP20
• Impact protection degree IK: IK05
• Contamination degree: 3
• Overvoltage category: IV
• Tropicalization: 2
• Relative humidity: 95 % at 55 °C
• Operating ambient temperature: -30 °C to 70 °C
• Storage ambient temperature: -40 °C to 70 °C
• Standards: Icu
• Compliant with EU RoHS, REACh without SVHC, free from toxic heavy metals and mercury
• Waste disposal: Must be disposed of via specific systems in the EU