Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
ABB S203M-C4NA MCB – S200P – 4P – C – 4A
ABB S203M-C4NA 3P+N miniature circuit breaker with 4 A rated current, C curve tripping characteristic and 10 kA breaking capacity for professional electrical protection.
£112.43
Why Choose the ABB S203M-C4NA Miniature Circuit Breaker?
The ABB S203M-C4NA is a high-performance 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M compact S200M series. Designed to provide dependable protection against overloads and short circuits, it is suitable for residential, commercial and industrial electrical installations where reliable circuit protection is essential.
Featuring ABB's proven current-limiting technology, the S203M-C4NA incorporates both a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short-circuit protection. Its robust construction, compact DIN rail design and compliance with international standards make it an excellent choice for professional electrical installations.
With a 4 A rated current, C curve tripping characteristic and 3P+N configuration, this miniature circuit breaker is ideal for protecting three-phase distribution circuits, control panels, machinery and industrial power systems requiring dependable circuit isolation and fault protection.
Key Advantages
- Compact 3P+N miniature circuit breaker for professional installations.
- 4 A rated current with C curve tripping characteristic.
- Current-limiting design reduces fault energy.
- Suitable for residential, commercial and industrial applications.
- DIN rail mounting for quick installation.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S200M series.
- Product ID: 2CDS273103R0044.
- Model: S203M-C4NA.
- Rated current: 4 A.
- C curve tripping characteristic.
- 3P+N configuration with three protected poles.
- 10 kA rated short-circuit breaking capacity (IEC).
- DIN rail mounting with screw terminals.
Reliable Electrical Circuit Protection
Miniature circuit breakers protect electrical installations by automatically disconnecting power when overloads or short circuits occur. The ABB S203M-C4NA combines thermal and magnetic trip mechanisms to provide rapid fault clearing while helping to minimise damage to connected equipment and wiring.
As part of the ABB System pro M compact range, this circuit breaker delivers dependable protection, long service life and compatibility with a wide range of ABB accessories, making it suitable for modern electrical distribution systems and industrial control panels.
Typical Applications
- Industrial control panels.
- Commercial electrical distribution boards.
- Three-phase machinery protection.
- OEM equipment and automation systems.
- Building electrical installations.
- Power distribution and control circuits.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Three Phase | |
|---|---|---|
| Current | 4 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200M | |
| Model | S203M-C4NA | |
| Product ID | 2CDS273103R0044 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 4 A | |
| Tripping characteristic | C | |
| Number of poles | 3P+N | |
| Protected poles | 3 | |
| Rated operational voltage | 400 V AC | |
| Maximum operational voltage | 440 V AC | |
| Frequency | 50 / 60 Hz | |
| Rated short-circuit breaking capacity | 10 kA | |
| Protection rating | IP20 (IP40 when installed in enclosure) | |
| Mounting type | DIN rail | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm | |
| Weight | approx. 0.44 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203M-C4NA used for?
It protects three-phase electrical circuits against overloads and short circuits in residential, commercial and industrial installations.
What is the current rating of this miniature circuit breaker?
The ABB S203M-C4NA has a 4 A rated current.
What tripping characteristic does this MCB have?
This model features a C curve, making it suitable for circuits with moderate inrush currents such as motors and general industrial loads.
How is the S203M-C4NA installed?
The circuit breaker is designed for quick installation onto a standard DIN rail using screw terminal connections.
Which standards does this MCB comply with?
The ABB S203M-C4NA complies with IEC/EN 60898-1 and IEC/EN 60947-2 for professional circuit protection applications.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are trusted by electrical contractors, panel builders and industrial engineers for delivering reliable circuit protection, high performance and long-term operational safety.
