MCB C120N-C100-1 C 100A 1-pole A9N18358

Professional single-phase circuit protection

The C120N-C100-1 miniature circuit breaker is a reliable solution for protecting electrical installations in residential, commercial, and industrial buildings. The device belongs to the Acti9 series by Schneider Electric.

Model A9N18358 provides effective protection against overload and short circuits in single-phase AC circuits with a rated current of 100A. Thanks to its Type C tripping characteristic, it is suitable for resistive loads and devices with medium inrush currents.

Operating parameters and performance

The device operates in a wide temperature range from -25°C to +70°C, allowing for installation in both heated and unheated switchboards and control cabinets. The rated voltage is 415V AC at a mains frequency of 50-60Hz.

The rated short-circuit breaking capacity reaches 10kA according to EN 60898 at 230V and 3kA according to IEC 60947-2 at voltages up to 400V. This characteristic ensures effective interruption even of significant short-circuit currents, protecting the installation from serious damage.

Construction and compatibility

The breaker occupies only 1.5 modules on a standard 35mm DIN rail, allowing for space savings in electrical switchboards. The installation depth is only 44mm.

The device enables the connection of single-core wires with a cross-section of 1.5-50mm² and multi-core wires of 1-35mm². The top cage-type terminals ensure a secure connection of supply wires, while the bottom dual-function terminals allow for the separate connection of a "fork" type phase busbar or a single wire.

Durability and reliability

The breaker's design guarantees high mechanical durability - 20000 switching cycles and electrical durability of 5000 cycles according to the IEC 60947-2 standard. This parameter translates into years of trouble-free operation even under intensive use.

Power loss is only 2W, which minimizes energy consumption by the protective device itself. The IP20 protection rating protects against contact with live parts and against access by solid objects larger than Ø12mm.

Compliance and certificates

The breaker meets the requirements of the most important European standards:

• EN/IEC 60898-1 - for circuit breakers for household installations
• EN/IEC 60947-2 - for low-voltage switchgear and controlgear
• Energy limiting class: 3
• Overvoltage category: 4
• Pollution degree: 3

The device has a CE declaration of conformity for low-voltage electrical equipment.

Practical application

Model A9N18358 finds wide application as a protective element:

• In main switchboards of residential and office buildings
• In power circuits for computer equipment
• In high-power LED lighting installations
• In power networks for small production machines
• In Building Management Systems (BMS)

Thanks to the possibility of additional equipment (e.g., auxiliary contacts), the device can be easily integrated into more advanced electrical installation control systems.