ABB S203P-B25 three pole 25 A B curve miniature circuit breaker from the System pro M compact S200P range with 25 kA breaking capacity for commercial and industrial electrical protection.
The ABB S203P-B25 is a high-performance three-pole miniature circuit breaker (MCB) from the ABB System pro M compact S200P series, designed to provide dependable protection against overloads and short circuits in demanding commercial and industrial electrical installations. Featuring a high 25 kA breaking capacity, it is ideally suited to installations with elevated prospective fault currents where enhanced circuit protection is essential.
Manufactured to internationally recognised standards, the S203P-B25 incorporates both thermal overload protection and a fast-acting electromechanical short-circuit tripping mechanism. Its compact DIN rail mounted design allows quick installation inside distribution boards and control panels while remaining fully compatible with a comprehensive range of ABB accessories.
With a 25 A rated current, B curve tripping characteristic and three-pole configuration, this circuit breaker is particularly suitable for protecting resistive loads, lighting circuits, distribution circuits and other installations where lower inrush currents are expected.
The ABB S203P-B25 automatically disconnects electrical circuits during overload or short-circuit conditions, helping to protect electrical equipment, minimise downtime and improve installation safety. Its thermal and magnetic tripping mechanisms provide dependable operation across a wide range of industrial and commercial applications.
The S200P series is trusted by panel builders, electrical contractors and maintenance engineers requiring compact miniature circuit breakers with high fault-breaking capability and long-term reliability.
| Current | 25 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200P |
| Model | S203P-B25 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 25 A |
| Number of poles | 3P |
| Tripping characteristic | B |
| Rated operational voltage | 400 V AC |
| Maximum operational voltage | 440 V AC |
| Frequency | 50 / 60 Hz |
| Rated short-circuit breaking capacity | 25 kA |
| Protection rating | IP20 (IP40 when installed within an enclosure) |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Weight | Approx. 0.42 kg |
The S203P-B25 protects three-phase electrical circuits against overloads and short circuits in commercial and industrial installations.
This model has a 25 A rated current.
A B curve MCB is intended for circuits with relatively low inrush currents, making it ideal for lighting, resistive loads and general electrical distribution.
The breaker provides a high 25 kA short-circuit breaking capacity, making it suitable for demanding installations with high prospective fault levels.
The miniature circuit breaker is designed for quick installation onto a standard DIN rail inside electrical distribution boards and control panels.
ABB System pro M compact S200P miniature circuit breakers are trusted worldwide for delivering dependable circuit protection, high fault performance and long-term reliability across industrial and commercial electrical installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...