Schneider A9N18374 Miniature Circuit Breaker (MCB), Acti9 C120N, 4P C100A 10kA

The Schneider Electric A9N18374 is a 4-pole miniature circuit breaker (MCB) from the Acti 9 C120N range, rated at 100 A with a C tripping characteristic. Designed for electrical power distribution, it delivers a breaking capacity of 10,000 A Icn at 230-400 V AC and supports both AC and DC network types.

Technical specifications:

• Commercial reference: A9N18374
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Acti 9 C120
• Product type: Miniature Circuit Breaker (MCB)
• Number of poles: 4P
• Number of protected poles: 4
• Rated current [In]: 100 A at 30 °C
• Tripping curve: C
• Network type: AC / DC
• Protection unit technology: Thermomagnetic
• Rated voltage [Ue]: 380-415 V AC 50/60 Hz; 220-240 V AC 50/60 Hz; 440 V AC 50/60 Hz; up to 500 V DC
• Breaking capacity [Icn]: 10,000 A at 230-400 V AC per EN/IEC 60898-1
• Breaking capacity [Icu]: 20 kA at 220-240 V AC; 10 kA at 380-415 V AC; 6 kA at 440 V AC; 10 kA at up to 500 V DC per EN/IEC 60947-2
• Service breaking capacity [Ics]: 7,500 A (75%) at 230-400 V AC per EN/IEC 60898-1
• Limitation class: 3 per EN/IEC 60947-2
• Rated insulation voltage [Ui]: 500 V AC per EN/IEC 60947-2
• Rated impulse withstand voltage [Uimp]: 6 kV per EN/IEC 60947-2
• Overcurrent protection range: 5-10 x In
• Dimensions (WxHxD): 108 x 81 x 73 mm
• Weight: 0.82 kg
• IP rating: IP20 per IEC 60529
• Operating temperature: -25 to 70 °C
• Storage temperature: -40 to 85 °C
• Mounting: Clip-on, 35 mm symmetrical DIN rail
• Connection type: Tunnel terminals, 1-50 mm² solid / 1.5-35 mm² flexible
• Tightening torque: 3.5 N.m
• Mechanical endurance: 20,000 cycles
• Electrical endurance: 5,000 cycles per IEC 60947-2
• Standards: EN/IEC 60947-2, EN/IEC 60898-1
• Certifications: EAC
• Warranty: 18 months

Features and benefits:

• Suitable for isolation per IEC 60947-2, enabling safe disconnection of circuits
• Compatible with comb busbar distribution blocks for simplified panel wiring
• Handle sealable in ON or OFF position with cable diameter 0.7 mm for tamper protection
• Contact position indicator with ON/OFF local signalling for quick visual status check
• Supports both AC and DC networks up to 500 V, providing installation flexibility
• Tropicalization class 2 and 95% relative humidity rating at 55 °C for demanding environments

Applications:

• Final distribution boards in commercial and industrial buildings requiring 100 A 4-pole protection
• Main circuit protection in electrical distribution panels with DIN rail mounting
• DC circuit protection in solar PV and battery storage systems up to 500 V
• Industrial control panels where isolation capability and high breaking capacity are required

Compliant with EN/IEC 60947-2 and EN/IEC 60898-1. Part of the Schneider Electric Acti 9 C120 range.

Also known as: Schneider A9N18374, Schneider Electric A9N18374, Acti9 C120N 4P 100A MCB, Schneider 100A 4-pole miniature circuit breaker.