Schneider 18792 Miniature Circuit Breaker (MCB), Acti9 NG125L, 2P C32A, 50kA

Schneider Electric 18792 is a 2-pole Miniature Circuit Breaker (MCB) from the Acti 9 NG125L range, rated at 32A with a C tripping curve and a breaking capacity of 50kA at 380-415V AC. Designed for electrical power distribution, it combines thermomagnetic protection technology with high interrupting performance across AC and DC networks.

Technical specifications:

• Commercial reference: 18792
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Acti 9 NG125
• Device short name: NG125L
• Number of poles: 2P
• Number of protected poles: 2
• Neutral conductor position: Left
• Rated current [In]: 32A at 40°C
• Tripping curve: C
• Network type: AC / DC
• Protection unit technology: Thermomagnetic
• Breaking capacity [Icu]: 100kA at 220-240V AC 50/60Hz; 50kA at 380-415V AC 50/60Hz; 40kA at 440V AC 50/60Hz; 15kA at 500V AC 50/60Hz; 36kA at <=250V DC (per EN/IEC 60947-2)
• Service breaking capacity [Ics]: 75kA (75%) at 220-240V AC; 37.5kA (75%) at 380-415V AC; 30kA (75%) at 440V AC; 11.25kA (75%) at 500V AC; 50kA (100%) at 250V DC
• Rated voltage [Ue]: 220-240V / 380-415V / 440V / 500V AC 50/60Hz; <=250V DC
• Rated insulation voltage [Ui]: 690V AC 50/60Hz
• Rated impulse withstand voltage [Uimp]: 8kV
• Overcurrent protection limit: 8 x In +/- 20%
• Usage category: Category A per IEC 60947-2
• Mounting: Click-on system, 35mm symmetrical DIN rail
• Handle mounting position: Vertical
• Busbar comb distribution block: Yes
• Width: 54mm
• Height: 103mm
• Depth: 81mm
• Weight: 0.48kg
• Connection terminals: Tunnel terminals 1.5-50mm² rigid; 1-35mm² flexible
• Wire strip length: 20mm
• Tightening torque: 3.5 N.m
• IP protection rating: IP20 (IEC 60529)
• IK protection rating: IK05 (EN/IEC 62262)
• Operating temperature: -30 to 70°C
• Storage temperature: -40 to 70°C
• Relative humidity: 95% at 55°C
• Operating altitude: 2000m
• Pollution degree: 3 (IEC 60947-2)
• Overvoltage category: IV
• Mechanical endurance: 20,000 cycles
• Electrical endurance: 10,000 cycles
• Standard: EN/IEC 60947-2

Features and benefits:

• Exceptional breaking capacity of 100kA at 220-240V AC, suitable for demanding industrial power distribution applications
• Thermomagnetic protection technology provides reliable overload and short-circuit protection
• Compatible with both AC and DC networks, offering installation flexibility
• Integrated lockable handle for enhanced safety and access control
• Quick DIN rail snap-on mounting with busbar comb compatibility for efficient panel wiring
• Suitable for isolation per IEC 60947-2, doubling as a disconnection device

Applications:

• Final distribution boards in commercial and industrial buildings
• Main or sub-main circuit protection in industrial power distribution panels
• Protection of outgoing circuits in low-voltage switchgear assemblies
• DC network protection in renewable energy or battery-backed installations
• High-fault-level environments requiring elevated breaking capacity

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

Also known as: Schneider 18792, Schneider Electric 18792, Acti9 NG125L 2P 32A MCB, Schneider NG125L C32 2-pole circuit breaker.