Schneider 18799 Miniature Circuit Breaker (MCB), Acti9 NG125L, 3P C10A, 50kA

Schneider Electric 18799 is a 3-pole miniature circuit breaker (MCB) from the Acti 9 NG125L range, designed for electrical power distribution in industrial and commercial installations. Rated at 10 A with a C tripping curve, it delivers thermomagnetic protection with a breaking capacity of up to 100 kA at 220-240 V AC.

Technical specifications:

• Commercial reference: 18799
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Acti 9 NG125
• Device name: NG125L
• Number of poles: 3P (3 protected poles)
• Rated current: 10 A at 40°C
• Tripping curve: C
• Protection technology: Thermomagnetic
• Network type: AC and DC
• Rated voltage: 220-240 V AC / 380-415 V AC / 440 V AC / 500 V AC / up to 375 V DC (50/60 Hz)
• Breaking capacity (Icu): 100 kA at 220-240 V AC; 50 kA at 380-415 V AC; 40 kA at 440 V AC; 15 kA at 500 V AC; 36 kA at 375 V DC
• Rated insulation voltage (Ui): 690 V AC per EN/IEC 60947-2
• Rated impulse withstand voltage (Uimp): 8 kV per EN/IEC 60947-2
• Overcurrent protection limit: 8 x In +/- 20%
• Usage category: Category A per IEC 60947-2
• Mounting: 35 mm symmetrical DIN rail, clip-on system, vertical handle position
• Dimensions (WxHxD): 81 x 103 x 81 mm
• Weight: 0.72 kg
• Connection: Tunnel terminals, 1.5-50 mm² rigid / 1-35 mm² flexible; stripped length 20 mm; tightening torque 3.5 N.m
• IP rating: IP20 per IEC 60529; IK05 per EN/IEC 62262
• Operating temperature: -30 to 70°C; storage: -40 to 70°C
• Operating altitude: up to 2000 m
• Mechanical endurance: 20,000 cycles; electrical endurance: 10,000 cycles
• Standard: EN/IEC 60947-2

Features and benefits:

• High breaking capacity of up to 100 kA at 220-240 V AC for demanding high fault-level installations
• Compatible with both AC and DC networks, providing flexibility across diverse distribution architectures
• Integrated locking mechanism and contact position indicator for enhanced safety and panel management
• Comb busbar distribution block compatible with 9 mm pitch rows, simplifying panel wiring
• Suitable for use as an isolating switch per IEC 60947-2, combining two functions in one device

Applications:

• Industrial main and sub-distribution boards requiring high short-circuit protection
• Commercial building power distribution panels operating at 380-415 V AC
• Outgoing circuit protection in switchgear assemblies up to 500 V AC or 375 V DC
• Installations where the circuit breaker must also serve as an isolating device

Compliant with EN/IEC 60947-2. Part of the Schneider Electric Acti 9 NG125 range.

Also known as: Schneider 18799, Schneider Electric 18799, Acti9 NG125L 3P C10A MCB, Schneider NG125L 10A circuit breaker.