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 S203-C63NA MCB – S200 – 3P+N – C – 63A
ABB S203-C63NA System pro M compact 3P+N miniature circuit breaker with 63 A rated current, C characteristic and 6 kA breaking capacity for commercial and industrial electrical installations.
£104.24
Why Choose the ABB S203-C63NA Miniature Circuit Breaker?
The ABB S203-C63NA is a premium 3P+N miniature circuit breaker (MCB) from the proven ABB System pro M compact S200 series. It is designed to provide reliable protection against overloads and short circuits in three-phase electrical installations while incorporating a switched neutral pole. Featuring a C characteristic tripping curve, it is ideally suited to general-purpose commercial and industrial applications where moderate inrush currents are expected.
Engineered with ABB's advanced thermal and electromechanical tripping mechanisms, the S203-C63NA delivers dependable circuit protection, excellent current limiting performance and long service life. Its compact DIN rail mounted design allows straightforward installation in distribution boards and control panels, while compatibility with ABB accessories enables flexible system expansion.
With a 63 A rated current, 3 protected poles plus switched neutral, and a 6 kA breaking capacity, the ABB S203-C63NA provides dependable protection for commercial buildings, industrial machinery and OEM electrical equipment. The S200 range complies with IEC/EN 60898-1, IEC/EN 60947-2 and UL1077 standards, making it suitable for residential, commercial and industrial applications.
Key Advantages
- 3P+N miniature circuit breaker for three-phase electrical systems.
- 63 A rated current suitable for demanding power distribution.
- C characteristic ideal for general-purpose commercial and industrial loads.
- 6 kA breaking capacity for dependable fault protection.
- Current limiting technology helps reduce fault energy.
- Compatible with ABB System pro M compact accessories.
- Suitable for residential, commercial and industrial installations.
Key Features
- ABB System pro M compact S200 series.
- Model: S203-C63NA.
- Rated current: 63 A.
- Number of poles: 3 protected poles + neutral.
- C characteristic tripping curve.
- 6 kA rated short-circuit breaking capacity.
- Thermal overload and electromechanical short circuit protection.
- DIN rail mounting.
- Red ON and green OFF contact position indication.
- Compatible with auxiliary contacts, shunt trips and undervoltage releases.
Reliable Circuit Protection for Commercial and Industrial Installations
The ABB S203-C63NA combines delayed thermal overload protection with rapid electromechanical short circuit protection to safeguard electrical systems against overloads and fault currents while maintaining excellent reliability during everyday operation.
Its C characteristic tripping curve makes it particularly suitable for general-purpose circuits supplying lighting, socket outlets, control equipment, small motors and commercial electrical distribution systems where moderate inrush currents occur.
Typical Applications
- Commercial electrical distribution boards.
- Industrial control panels.
- Machine building and OEM equipment.
- Building services installations.
- Three-phase power distribution.
- Automation systems.
- General industrial machinery.
Technical Specifications
Tick the specs you need, then view products that match.
| Certification | UL 1077 | |
|---|---|---|
| Phase | Three Phase | |
| Current | 63 A | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200 | |
| Model | S203-C63NA | |
| Product ID | 2CDS253103R0634 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 63 A | |
| Tripping characteristic | C | |
| Number of poles | 3P+N | |
| Rated operational voltage | Up to 440 V AC | |
| Frequency | 50 / 60 Hz | |
| Rated breaking capacity | 6 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077 | |
| Mechanical endurance | 20,000 operations | |
| Electrical endurance | 10,000 operations | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-C63NA used for?
The ABB S203-C63NA protects three-phase electrical circuits against overloads and short circuits while providing a switched neutral for enhanced installation safety.
What does the C characteristic mean?
The C characteristic is intended for general-purpose electrical circuits with moderate inrush currents, making it suitable for most commercial and industrial applications.
What is the rated current of this circuit breaker?
The ABB S203-C63NA has a rated current of 63 A.
Can auxiliary accessories be fitted?
Yes. The breaker is compatible with ABB auxiliary contacts, shunt trips, signalling contacts and undervoltage releases from the System pro M compact range.
Where is this miniature circuit breaker typically installed?
It is designed for DIN rail mounting inside distribution boards, industrial control panels and commercial electrical installations.
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 dependable circuit protection, excellent build quality and long-term reliability across commercial and industrial applications.
