ABB S203-K1NA System pro M Compact miniature circuit breaker with 3P+N configuration, 1 A rated current, K tripping characteristic and 6 kA breaking capacity for industrial and commercial circuit protection.
£201.28
The ABB S203-K1NA is a high-quality 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series, designed to provide dependable overload and short circuit protection for commercial and industrial electrical installations. Featuring a K tripping characteristic, this breaker is particularly suited to circuits with higher inrush currents, making it an excellent choice for motor loads, transformers and other inductive applications.
Designed to meet the requirements of modern electrical installations, the S203-K1NA combines excellent protection performance with a compact DIN rail mounted design. ABB's proven thermal and magnetic trip mechanisms help ensure reliable circuit protection while minimising downtime and protecting connected equipment.
With a 1 A rated current, 3P+N configuration and a 6 kA breaking capacity, the ABB S203-K1NA offers reliable protection for three-phase distribution systems where a switched neutral is required. Manufactured to comply with international standards, it is suitable for demanding industrial, commercial and OEM applications.
The ABB S203-K1NA protects electrical circuits by automatically disconnecting the supply during overload or short circuit conditions. Its combined thermal and magnetic tripping mechanisms provide fast, dependable protection while helping prevent damage to cables, equipment and connected machinery.
The K characteristic offers a higher magnetic trip threshold than standard B or C curve breakers, making it especially suitable for loads with elevated starting currents such as motors, transformers and industrial control equipment.
| Current | 1 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200 |
| Model | S203-K1NA |
| Product ID | 2CDS253103R0217 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 1 A |
| Tripping characteristic | K |
| Number of poles | 3P+N |
| Rated operational voltage | Up to 400 V AC |
| Maximum operational voltage | 440 V AC |
| Rated frequency | 50 / 60 Hz |
| Rated short circuit capacity | 6 kA |
| Mounting type | DIN rail |
| Protection rating | IP20 (IP40 when installed in enclosure) |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203-K1NA protects three-phase electrical circuits with a neutral against overloads and short circuits in industrial and commercial installations.
The K characteristic is designed for circuits with higher inrush currents, making it well suited to motors, transformers and inductive loads.
This miniature circuit breaker has a 1 A rated current.
The breaker is designed for quick installation onto standard 35 mm DIN rails within electrical distribution boards and control panels.
Yes. The ABB S200 range supports a wide range of auxiliary contacts, shunt trips, undervoltage releases and other compatible accessories.
ABB System pro M Compact miniature circuit breakers are trusted by panel builders, electrical contractors and industrial engineers for dependable circuit protection, consistent 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...