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ABB S203-B63 MCB – S200 – 3P – B – 63A
ABB S203-B63 three pole miniature circuit breaker with 63 A rated current, B curve tripping characteristic and 6 kA breaking capacity for commercial and industrial electrical installations.
£49.13
Why Choose the ABB S203-B63 Miniature Circuit Breaker?
The ABB S203-B63 is a premium three-pole miniature circuit breaker (MCB) from the proven ABB System pro M Compact S200 series. It is designed to provide dependable protection against overloads and short circuits in commercial, industrial and OEM electrical installations, ensuring the safety and reliability of electrical distribution systems.
Featuring a B curve tripping characteristic and a 63 A rated current, the S203-B63 is ideally suited for circuits with low inrush currents such as lighting, heating and general power distribution. Its advanced current limiting design helps reduce fault energy, protecting connected equipment while minimising downtime.
Built to ABB's high engineering standards, the S203-B63 complies with major international electrical standards and offers long service life, simple DIN rail installation and compatibility with a comprehensive range of ABB accessories for flexible panel design.
Key Advantages
- Reliable three-pole miniature circuit breaker for commercial and industrial installations.
- 63 A rated current with B curve tripping characteristic.
- 6 kA breaking capacity for dependable circuit protection.
- Protects against overload and short circuit conditions.
- Current limiting technology helps reduce fault energy.
- Compatible with ABB auxiliary contacts, signalling devices and accessories.
Key Features
- ABB System pro M Compact S200 series.
- 63 A rated current.
- B characteristic trip curve.
- Three protected poles (3P).
- 6 kA rated short circuit breaking capacity.
- DIN rail mounting.
- Thermal overload and magnetic short circuit protection.
- Failsafe bi-directional cylinder-lift terminals for secure connections.
Reliable Protection for Electrical Distribution
The ABB S203-B63 combines thermal overload protection with fast magnetic short circuit protection to safeguard electrical installations from fault conditions. Its current limiting characteristics reduce stress on connected equipment while improving overall system reliability.
Designed for professional installations, the ABB S200 range delivers excellent mechanical durability, simple installation and compatibility with a wide range of ABB modular accessories, making it ideal for new projects and panel upgrades.
Typical Applications
- Commercial distribution boards.
- Industrial electrical installations.
- Lighting circuits.
- Heating systems.
- OEM control panels.
- General three-phase power distribution.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Current | 63 A | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | ABB | |
| Series | System pro M Compact S200 | |
| Model | S203-B63 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Product ID | 2CDS253001R0635 | |
| Rated current | 63 A | |
| Tripping characteristic | B Curve | |
| Number of poles | 3 | |
| Rated operational voltage | 400 V AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit breaking capacity | 6 kA | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203-B63 used for?
The S203-B63 protects three-phase electrical circuits against overloads and short circuits in commercial, industrial and OEM applications.
What does the B curve characteristic mean?
A B curve miniature circuit breaker trips quickly under relatively low inrush current conditions, making it suitable for lighting, heating and general electrical circuits.
What is the rated current of this circuit breaker?
The ABB S203-B63 has a 63 A rated current.
How many poles does this MCB have?
This model features three protected poles (3P) for use in three-phase electrical systems.
How is the S203-B63 installed?
The breaker is designed for standard DIN rail mounting within distribution boards and electrical control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M Compact miniature circuit breakers are trusted worldwide by electricians, panel builders and industrial engineers for reliable circuit protection, long operational life and consistent performance.
