ABB S203MT-C50 3-pole 50 A miniature circuit breaker with C characteristic tripping curve and 10 kA breaking capacity for railway, traction and industrial circuit protection.
£154.71
The ABB S203MT-C50 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 is engineered for installations where dependable performance, compact design and compliance with railway sector requirements are essential.
This circuit breaker uses a delayed thermal tripping mechanism for overload protection and an electromagnetic tripping mechanism for short circuit protection. Its C characteristic tripping curve makes it suitable for circuits with moderate inrush currents, such as control panels, motors, transformers and auxiliary railway systems.
With a 50 A rated current, 3-pole configuration and 10 kA breaking capacity, the ABB S203MT-C50 provides strong protection for three-phase electrical circuits. Its DIN rail mounted format supports efficient installation in distribution boards, machine panels and rolling stock electrical systems.
The ABB S200MT range is designed especially for traction and railway applications, providing dependable protection in electrical systems exposed to demanding operational conditions. These miniature circuit breakers help protect conductors, equipment and control circuits from damage caused by overloads and short circuits.
The C curve characteristic of the S203MT-C50 offers a balanced response for general purpose and moderately inductive loads. This makes it well suited for three-phase auxiliary systems, industrial panels and machinery circuits where safe disconnection and continuity of operation are both important.
| Current | 50 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-C50 |
| Product type | Miniature circuit breaker (MCB) |
| Product ID | 2CDS273006R0504 |
| EAN | 4016779770293 |
| Rated current | 50 A |
| Number of poles | 3 |
| Tripping characteristic | C |
| Rated short circuit breaking capacity | 10 kA |
| Rated operational voltage | 400 V AC according to IEC 60898-1 / 440 V AC according to IEC 60947-2 |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. |
| Typical applications | Railway, rolling stock, traction systems, industrial control panels and three-phase distribution circuits |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The S203MT-C50 is used to protect three-phase electrical circuits against overloads and short circuits in railway, traction and industrial applications.
The ABB S203MT-C50 has a 50 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 especially for traction and railway applications, including rolling stock electrical systems.
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and industrial electrical professionals for reliable protection, compact installation and long-term performance in demanding low voltage systems.
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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...