ABB S303P-B10NA miniature circuit breaker with a 10 A rating, Type B tripping characteristic, 3P+N configuration and 25 kA breaking capacity for industrial electrical protection.
£130.02
The ABB 2CDS383103R0105, also known as the S303P-B10NA, is a premium miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial and commercial electrical installations. Part of the trusted ABB S300P System pro M compact series, it delivers outstanding reliability, compact installation and high fault-breaking performance for demanding applications.
Featuring a 3P+N configuration, the S303P-B10NA protects all three phase conductors while providing a switched neutral pole. Its Type B tripping characteristic makes it particularly suitable for resistive loads and circuits with low inrush currents, including lighting systems, distribution circuits and general-purpose installations.
With a rated current of 10 A, an operating voltage of up to 415 V AC and a high 25 kA breaking capacity, this ABB miniature circuit breaker provides exceptional protection for switchboards, control panels and industrial distribution systems. Its DIN rail mounting and compact four-module width simplify installation and maintenance.
The ABB S303P-B10NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping prevent damage to cables, equipment and connected electrical systems while improving operational safety.
As part of ABB's proven S300P range, this miniature circuit breaker offers dependable performance, high breaking capacity and long service life, making it an excellent choice for industrial machinery, commercial buildings and electrical distribution systems.
| Current | 10 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S300P System pro M compact |
| Model | S303P-B10NA |
| Product ID | 2CDS383103R0105 |
| Product type | Miniature circuit breaker |
| Rated current | 10 A |
| Tripping characteristic | Type B |
| Number of poles | 3P+N |
| Number of protected poles | 3 |
| Rated voltage | Up to 415 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 25 kA |
| Rated insulation voltage | 500 V |
| Impulse withstand voltage | 6 kV |
| Protection rating | IP20 |
| Mounting type | DIN rail mounting |
| Module width | 4 modules |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm |
| Weight | approx. 0.496 kg |
| EAN | 4016779077330 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects three-phase electrical circuits against overloads and short circuits in industrial and commercial installations.
The ABB S303P-B10NA has a rated current of 10 A.
This model uses a Type B tripping characteristic, making it suitable for circuits with relatively low inrush currents.
The miniature circuit breaker provides a 25 kA short-circuit breaking capacity.
It is designed for quick installation onto a standard DIN rail within electrical distribution boards and industrial control panels.
ABB S300P miniature circuit breakers are trusted by panel builders, electrical contractors and industrial engineers for delivering dependable circuit protection, long-term reliability and compliance with international electrical standards.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...