ABB S203MT-K32 3-pole 32 A K curve miniature circuit breaker with 10 kA breaking capacity for traction, railway and industrial circuit protection.
£212.99
The ABB S203MT-K32 is a heavy-duty 3-pole miniature circuit breaker (MCB) engineered to provide dependable overload and short-circuit protection in demanding electrical installations. As part of the specialist ABB S200MT range, it has been specifically developed for traction, railway and industrial applications where reliability and safety are critical.
Featuring a K tripping characteristic, the S203MT-K32 is ideal for circuits with high inrush currents, helping to minimise nuisance tripping while maintaining reliable protection. It is particularly suited to motor circuits, transformers, inductive loads and industrial automation systems.
With a 32 A rated current, 3-pole configuration and 10 kA short-circuit breaking capacity, the ABB S203MT-K32 provides robust protection for three-phase electrical systems. Its DIN rail mounting format and compatibility with ABB System pro M compact accessories make installation straightforward in modern electrical panels.
The ABB S203MT-K32 automatically disconnects electrical circuits during overload and short-circuit conditions, helping protect cables, equipment and connected machinery. Its current-limiting design reduces fault energy and contributes to improved electrical safety.
Designed specifically for railway rolling stock and industrial installations, the S200MT range complies with recognised international standards while delivering dependable performance in demanding operating environments.
| Current | 32 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-K32 |
| Product ID | 2CDS273445R0537 |
| EAN | 4016779126724 |
| Product type | Miniature circuit breaker |
| Number of poles | 3P |
| Protected poles | 3 |
| Rated current | 32 A |
| Tripping characteristic | K curve |
| Rated short-circuit capacity | 10 kA |
| Rated ultimate short-circuit capacity (Icu) | 15 kA |
| Rated insulation voltage | 440 V |
| Rated operational voltage | 400 V AC |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Pollution degree | 3 |
| Overvoltage category | III |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Weight | approx. 0.38 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203MT-K32 protects three-phase electrical circuits against overloads and short circuits in traction, railway and industrial installations.
The S203MT-K32 has a rated current of 32 A.
This miniature circuit breaker has a 3-pole configuration with three protected poles.
The K curve tripping characteristic is designed for circuits with higher inrush currents, making it suitable for motors, transformers and other inductive loads.
It is typically installed on a DIN rail inside industrial control panels, switchboards and electrical distribution boards.
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and industrial electricians for dependable circuit protection in demanding applications.
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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...