Acti9 NG125L 2P 20 A D Curve Automatic Circuit Breaker

Miniature automatic circuit breaker from the Acti9 NG125 range, designed to protect electrical circuits in small buildings and small commercial installations. Offers thermal-magnetic protection with D curve, suitable for loads with high inrush currents. Its breaking capacity Icu reaches up to 100 kA at 220...240 V AC, ensuring safety in case of short circuits.

Technical Features

• Number of poles: 2P
• Number of protected poles: 2
• Neutral position: Left
• Rated current [In]: 20 A at 40 °C
• Network type: AC (alternating current)
• Tripping unit technology: Thermal-magnetic
• Curve code: D
• Breaking capacity code: L
• Breaking capacity [Icu]: 100 kA at 220...240 V AC 50/60 Hz, 40 kA at 440 V AC 50/60 Hz, 50 kA at 380...415 V AC 50/60 Hz, 15 kA at 500 V AC 50/60 Hz, 36 kA at ≤ 250 V DC
• Service breaking capacity [Ics]: 75 kA (75 % of Icu) at 220...240 V AC 50/60 Hz, 37.5 kA (75 % of Icu) at 380...415 V AC 50/60 Hz, 30 kA (75 % of Icu) at 440 V AC 50/60 Hz, 11.25 kA (75 % of Icu) at 500 V AC 50/60 Hz, 50 kA (100 % of Icu) at ≤ 250 V DC
• Rated operating voltage [Ue]: 220...240 V AC 50/60 Hz, 380...415 V AC 50/60 Hz, 440 V AC 50/60 Hz, 500 V AC 50/60 Hz, ≤ 250 V DC
• Rated insulation voltage [Ui]: 690 V AC 50/60 Hz
• Surge voltage withstand [Uimp]: 8 kV
• Magnetic trip threshold: 12 x In ± 20 %
• Usage category: Category A according to EN > 50 A
• Switching capability: Yes according to EN > 50 A
• Supply frequency: 50/60 Hz
• Contact position indicator: Yes
• Local indicators: Trip indicator, On/Off indication
• Control type: Manual trip test, Handle
• Mounting type: Adjustable clip
• Mounting support: Symmetrical 35 mm DIN rail
• Compatibility with distribution block and busbar comb: Yes
• Spacing: 9 mm, 6 steps
• Height: 103 mm
• Width: 54 mm
• Depth: 81 mm
• Product weight: 0.48 kg
• Mechanical durability: 20000 cycles
• Electrical durability: 10000 cycles
• Lockable: With lock
• Locking options description: Integrated lock
• Connections - terminals: Tunnel-type terminals 1.5…50 mm² rigid, 1…35 mm² flexible
• Stripping length for terminal connection: 20 mm
• Tightening torque: 3.5 N·m
• Earth leakage protection: Independent block
• Compatibility code: NG125
• Protection rating IP: IP20 according to EN/IEC 60529
• Ingress protection IK: IK05 according to EN/IEC 62263
• Contamination degree: 3 according to EN/IEC 60664-1
• Overvoltage category: IV
• Tropicalization: 2 according to IEC 60068-1
• Relative humidity: 95 % at 55 °C
• Maximum operating altitude: 2000 m
• Operating ambient temperature: -30…70 °C
• Storage ambient temperature: -40…70 °C
• Standards: Icu
• Sustainable offering status: Green Premium product
• Compliant with REACh without SVHC: Yes
• EU RoHS Directive: Compliant
• Free of toxic heavy metals: Yes
• Mercury-free: Yes
• RoHS exemptions information: Yes
• China RoHS regulation: Proactive China RoHS declaration (outside legal scope of China RoHS)
• WEEE: In the European Union market, the product must be disposed of according to a specific waste collection system and must never end up in general waste bins

This circuit breaker is suitable for electrical installations in light industrial and commercial environments, providing reliability under extreme temperature and humidity conditions. Its compact design and DIN rail mounting facilitate integration into electrical panels.