Schneider A9N18357 | Miniature circuit-breaker, Acti9 C120N, 1P, 80 A, C curve, 10000 A (IEC 60898-1), 10 kA (IEC 60947-2)

1. Technical Specifications A9N18357

• Rated Operational Voltage (Ue): Up to 240 V AC (single-phase systems)

• Rated Current (In): 80 Amperes

• Number of Poles: 1 (line conductor only)

• Tripping Characteristic: Type C — suited for circuits with moderate inrush currents such as motors, HVAC, and lighting systems

• Breaking Capacity:

  • 10 kA according to IEC 60898-1 (residential/commercial)

  • 10 kA according to IEC 60947-2 (industrial applications)

• Mounting: 35 mm DIN rail

• Degree of Protection: IP20 (IP40 with enclosure)

• Operating Temperature: -25°C to +70°C

• Electrical Endurance: Up to 20,000 operations

• Mechanical Endurance: Up to 20,000 operations

• Standards Compliance: IEC 60898-1, IEC 60947-2

• Width: 18 mm per pole

2. Key Features A9N18357

1. High-Current Single-Pole Protection: Provides robust overcurrent and short-circuit protection for circuits up to 80 A

2. C Curve Tripping: Suitable for most general-purpose loads with moderate startup surges

3. Enhanced Breaking Capacity: Rated for 10 kA fault levels, ensuring protection in high-power distribution networks

4. DIN Rail Mountable: Standardized installation in distribution boards and industrial control panels

5. Thermal-Magnetic Protection: Combines overload (thermal) and short-circuit (magnetic) protection in one compact device

6. Compact and Modular Design: Saves panel space while offering full protection

7. Visual Status Indicator: Simple ON/OFF indication window for fast identification of breaker status

8. Durable Construction: Engineered for high mechanical and electrical endurance

9. Eco-Compliant: RoHS compliant, manufactured with recyclable materials

3. Typical Applications

The A9N18357 MCB is ideal for use in demanding electrical environments where high current and dependable protection are required:

• Main Incoming Circuits: For single-phase feeders or sub-distribution boards

• Industrial Equipment: Motors, machinery, and compressors with moderate inrush currents

• HVAC Systems: Suitable for air conditioning compressors and heating elements

• Data Centers & IT Rooms: Protection of rack power circuits or distribution strips

• Commercial Buildings: Retail units, supermarkets, and offices

• Control Panels: For industrial automation and large-capacity loads

• Elevators and Escalators: Protects power supply lines in vertical transport systems

• Backup Power Systems: Suitable for genset output protection or UPS input circuits