ABB S303P-K0.75 three-pole miniature circuit breaker featuring a 0.75 A rated current, K curve tripping characteristic and 25 kA breaking capacity for industrial electrical protection.
£203.91
The ABB S303P-K0.75 is a high-performance three-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial, commercial and OEM electrical installations. As part of the proven ABB System pro M compact S300P series, it delivers exceptional reliability, high breaking capacity and compliance with international electrical standards.
Designed for demanding industrial environments, the S303P-K0.75 combines a compact DIN rail mounted design with robust construction, making installation straightforward within switchboards, control panels and electrical distribution systems. Its dependable switching mechanism ensures long service life while protecting valuable electrical equipment.
Featuring a 0.75 A rated current, a K curve tripping characteristic and a 25 kA breaking capacity, this miniature circuit breaker is ideally suited for circuits with higher inrush currents such as motors, transformers, solenoids and other inductive loads.
The ABB S303P-K0.75 automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect motors, transformers and other inductive equipment from electrical faults. The K curve characteristic tolerates higher inrush currents while maintaining rapid protection during genuine fault conditions.
Widely specified by panel builders, machine manufacturers and industrial electricians, the S300P range offers dependable operation, long service life and straightforward integration into modern electrical distribution systems.
| Current | 0.75 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S303P-K0.75 |
| SKU | 2CDS383001R0187 |
| EAN | 4016779078030 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 0.75 A |
| Tripping characteristic | K 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, particularly those supplying motors, transformers and other inductive loads.
The ABB S303P-K0.75 has a 0.75 A rated current.
The K curve allows higher inrush currents before tripping, making it suitable for motor circuits, transformers and other inductive equipment.
The S303P-K0.75 provides a 25 kA short-circuit breaking capacity for demanding industrial installations.
The miniature circuit breaker mounts 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, machine builders and industrial engineers for delivering dependable circuit protection, high breaking performance and long operational 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...