Circuit breaker C120N -B80-3 B 80A 3-pole A9N18349

Professional electrical installation protection

The C120N-B80A miniature circuit breaker is an advanced protective solution from the Schneider Electric Acti9 family, designed for comprehensive electrical circuit protection in residential, commercial, and industrial applications. The three-pole design with a rated current of 80A features a delayed thermal mechanism for overload protection and a B characteristic electromagnetic trip that reacts effectively to short circuits.

Operating parameters and technical characteristics

The device operates at a rated voltage of 400V AC with 500V insulation, providing energy limiting class 3 and overvoltage category 4. The rated short-circuit breaking capacity is 10kA (EN 60898) and 20kA (IEC 60947-2 at 230V), guaranteeing effective protection even during severe surges. The impulse withstand voltage reaches 6kV, and power loss is only 3.2W. An operating temperature range from -25°C to +70°C and a frequency of 50-60Hz allow for installation in diverse environmental conditions.

Construction and mounting capabilities

The device width is 4.5 modules (approximately 81mm) with a mounting depth of 44mm, allowing for economical space management in distribution boards. The ability to connect single-core wires (1.5-50mm²) and multi-core wires (1-35mm²) ensures installation versatility. Mounting is performed on a standard DIN rail, and the IP20 protection rating protects against contact with live parts.

Applications and user benefits

The B tripping characteristic makes the circuit breaker ideal for circuits with resistive loads (lighting, heaters), where rapid response to short circuits is required while simultaneously tolerating motor inrush currents. Compliance with EN 60898-1 and EN60947-2 standards enables use in residential and commercial installations, and the option for additional accessories allows for functionality expansion according to the installer's individual needs.