ABB S203MT-C63 3-pole 63 A miniature circuit breaker with C characteristic tripping curve and 10 kA short circuit capacity for railway, traction and industrial circuit protection.
£159.90
The ABB S203MT-C63 is a robust 3-pole miniature circuit breaker (MCB) designed for reliable overload and short circuit protection in railway, traction and demanding industrial applications. As part of the specialised ABB S200MT miniature circuit breaker series, it provides dependable circuit protection for installations where compact design, safety and long-term operational reliability are essential.
This circuit breaker combines delayed thermal overload protection with electromagnetic short circuit protection. Its C characteristic tripping curve makes it suitable for circuits with moderate inrush currents, including general industrial loads, control panels, small motors, transformers and auxiliary railway systems.
With a 63 A rated current, 3-pole configuration and 10 kA short circuit capacity, the ABB S203MT-C63 provides strong protection for higher load three-phase electrical circuits. Its DIN rail mounted format allows efficient installation in rolling stock electrical systems, distribution boards, control cabinets and machine panels.
The ABB S200MT range is engineered for railway and traction environments where dependable low voltage protection is critical. These miniature circuit breakers help protect conductors, equipment and connected devices against overload and short circuit conditions whilst supporting compact, modular panel design.
The C curve characteristic of the S203MT-C63 provides a balanced trip response for general purpose and moderately inductive loads. This makes it suitable for three-phase auxiliary systems, industrial control panels, machinery circuits and distribution applications where reliable disconnection is required under fault conditions.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-C63 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 63 A |
| Number of poles | 3 |
| Tripping characteristic | C |
| Rated short circuit capacity | 10 kA |
| Rated operational voltage | 400 V AC / 440 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Current limiting class | Class 3 |
| Typical applications | Railway, rolling stock, traction systems, industrial control panels and three-phase distribution circuits |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The S203MT-C63 is used to protect three-phase electrical circuits against overloads and short circuits in railway, traction and industrial applications.
The ABB S203MT-C63 has a 63 A rated current.
The C curve is suitable for circuits with moderate inrush currents, including many industrial loads, control panels, small motors and transformer-fed circuits.
This model has a 3-pole configuration, making it suitable for three-phase circuit protection.
Yes, the S200MT range is designed for traction and railway applications, including rolling stock electrical systems and transport control panels.
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and industrial electrical professionals for reliable circuit protection, compact installation and long service life in demanding low voltage systems.
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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...