ABB S303P-B32 three-pole miniature circuit breaker with a 32 A rated current, B curve tripping characteristic and 25 kA breaking capacity for industrial and commercial electrical protection.
£127.69
The ABB S303P-B32 is a premium 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 high breaking capacity, reliable operation and long service life for demanding low voltage distribution systems.
Designed in accordance with international IEC and UL standards, the S303P-B32 features a compact DIN rail mounted design that allows quick installation within switchboards, distribution boards and industrial control panels. Its robust switching mechanism, fail-safe terminals and clear trip indication simplify installation and maintenance while ensuring reliable operation.
Featuring a 32 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 electrical distribution systems requiring rapid overload protection.
The ABB S303P-B32 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect wiring, switchgear and connected equipment from electrical damage. Its B curve characteristic provides fast tripping for resistive loads and applications with relatively low inrush currents.
The ABB S300P range is trusted worldwide by electrical contractors, panel builders and industrial engineers for dependable performance, high fault protection and straightforward integration into modern electrical distribution systems.
| Current | 25 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S303P-B32 |
| SKU | 2CDS383001R0255 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 32 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 |
| Rated insulation voltage | 500 V |
| Impulse withstand voltage | 6 kV |
| Protection rating | IP20 |
| Mounting type | 35 mm DIN rail |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Weight | approx. 372 g |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects three-phase electrical circuits against overloads and short circuits in industrial, commercial and OEM electrical installations.
The ABB S303P-B32 has a 32 A rated current.
The B curve provides rapid magnetic tripping, making it suitable for lighting circuits and resistive electrical loads with relatively low inrush currents.
The S303P-B32 provides a 25 kA short-circuit breaking capacity for demanding industrial and commercial electrical installations.
The miniature circuit breaker is designed for installation on 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 reliable circuit protection, outstanding electrical 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...