Description
The Acti9 C120N A9N18376 is a robust 4-pole Miniature Circuit Breaker (MCB) designed for low voltage protection in industrial and residential applications. With a rated current of 125A, C-curve tripping characteristic, and high breaking capacity of 10kA (IEC/EN 60898-1 and 60947-2), it offers reliable protection against short circuits and overloads.
Built for safety, it features a visible green strip to indicate physical contact disconnection, allowing safe maintenance on downstream circuits. Its electrical endurance of 5,000 cycles and mechanical durability of 20,000 cycles ensure long service life. The breaker supports an operational voltage range of 380–415V AC, and a rated insulation voltage of 500V AC, offering overvoltage category IV protection and pollution degree 3 compliance.
This MCB is DIN rail mountable and occupies 12 x 9mm pitches in width. It is ideal for control panels, switchboards, and distribution units in industrial machines, buildings, and energy systems.
Specifications
| Attribute | Details |
|---|---|
| Brand | Schneider Electric |
| Series | Acti9 C120N |
| Model Reference | A9N18376 |
| Product Type | Miniature Circuit Breaker (MCB) |
| Number of Poles | 4P (Four Poles Protected) |
| Rated Current | 125 A |
| Tripping Curve | C Curve |
| Breaking Capacity | 10kA (IEC/EN 60898-1 & IEC/EN 60947-2) |
| Operational Voltage (Ue) | 380–415 V AC |
| Rated Insulation Voltage (Ui) | 500 V AC |
| Electrical Endurance | 5,000 cycles |
| Mechanical Endurance | 20,000 cycles |
| Overvoltage Category | Category IV |
| Pollution Degree | 3 |
| Limitation Class | Class 3 (IEC/EN 60898-1) |
| Mounting | DIN Rail |
| Width (DIN pitches) | 12 x 9 mm (108 mm total width) |
| Degree of Protection | IP20 (on terminals, IEC/EN 60529) |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Product Colour | White (RAL9003) |
| Dimensions (W x H x D) | 108 x 81 x 73 mm |
| Net Weight | 0.82 kg |
| Certifications | IEC/EN 60898-1, IEC/EN 60947-2 |
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