ABB S303P-B25 three-pole miniature circuit breaker with a 25 A rated current, B curve tripping characteristic and 25 kA breaking capacity for industrial and commercial electrical protection.
£203.91
The ABB S303P-B25 is a high-quality three-pole miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in industrial, commercial and OEM electrical installations. As part of the trusted ABB System pro M compact S300P series, it delivers reliable circuit protection, high breaking performance and long operational life.
Designed for low voltage electrical distribution systems, the S303P-B25 features a compact DIN rail mounted construction that enables straightforward installation inside switchboards, distribution boards and industrial control panels. Its robust switching mechanism and high-quality terminals ensure safe operation and dependable long-term performance.
Featuring a 25 A rated current, a B curve tripping characteristic and a 25 kA breaking capacity, this miniature circuit breaker is ideally suited for protecting lighting circuits, resistive loads and general-purpose electrical distribution where rapid fault protection is essential.
The ABB S303P-B25 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect wiring, electrical equipment and distribution systems from damage. Its B curve characteristic provides fast magnetic tripping, making it particularly suitable for resistive loads and lighting circuits with relatively low inrush currents.
The ABB S300P range is trusted worldwide by electricians, panel builders and industrial engineers for dependable performance, high fault protection and straightforward integration into modern electrical distribution systems.
| Current | 1 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S303P-B25 |
| SKU | 2CDS383001R0217 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 25 A |
| Tripping characteristic | B Curve |
| Number of poles | 3 |
| Rated operational voltage | 415 V AC |
| Maximum operating voltage | 480Y/277 V AC, 125 V DC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 25 kA |
| Protection rating | IP20 |
| Mounting type | 35 mm DIN rail |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Weight | approx. 0.372 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects three-phase electrical circuits against overloads and short circuits in commercial, industrial and OEM electrical installations.
The ABB S303P-B25 has a 25 A rated current.
A B curve breaker trips rapidly at relatively low overcurrent levels, making it suitable for lighting circuits and resistive electrical loads.
The S303P-B25 provides a 25 kA short-circuit breaking capacity for demanding industrial and commercial installations.
The miniature circuit breaker is designed for installation onto a standard 35 mm DIN rail inside switchboards, distribution boards and industrial control panels.
ABB System pro M compact miniature circuit breakers are trusted by electricians, panel builders and industrial engineers for delivering dependable circuit protection, high breaking performance and long service life.
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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...