ABB S203MT-C20 S200MT 3-pole miniature circuit breaker with 20 A rated current, C characteristic and 10 kA breaking capacity for railway, traction and industrial applications.
£118.60
The ABB S203MT-C20 is a high-performance 3-pole miniature circuit breaker (MCB) from the specialist ABB S200MT series. It has been specifically developed for railway, traction and demanding industrial applications, delivering dependable overload and short circuit protection in environments where reliability, vibration resistance and long service life are essential.
Featuring a C characteristic tripping curve, the S203MT-C20 is ideal for circuits with moderate inrush currents, including auxiliary railway systems, control panels, industrial automation equipment and OEM machinery. ABB's current limiting technology reduces fault energy, while proven thermal and magnetic tripping mechanisms ensure reliable circuit protection throughout the product's operating life.
With a 20 A rated current, 3 protected poles, 10 kA rated breaking capacity and compact DIN rail mounting, the ABB S203MT-C20 is an excellent choice for protecting three-phase electrical circuits within railway vehicles, transport infrastructure and industrial control systems.
The ABB S203MT-C20 combines delayed thermal overload protection with rapid magnetic short circuit protection to safeguard electrical equipment against overloads and fault currents. Its current limiting construction helps reduce thermal and mechanical stress during short circuit events, improving overall system reliability.
Developed specifically for railway applications, the S200MT range also performs exceptionally well in industrial automation, machine building and OEM installations where dependable protection and long operational life are required.
| Current | 20 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-C20 |
| Product ID | 2CDS273445R0204 |
| EAN | 4016779124010 |
| Product type | Miniature Circuit Breaker (MCB) |
| Rated current | 20 A |
| Tripping characteristic | C |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Rated operational voltage | 400 V AC |
| Rated insulation voltage | 440 V AC |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50 / 60 Hz |
| Rated breaking capacity (IEC/EN 60898-1) | 10 kA |
| Rated ultimate breaking capacity (IEC/EN 60947-2) | 15 kA |
| Rated service breaking capacity | 11.2 kA |
| Protection rating | IP20 |
| Energy limiting class | 3 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Mechanical endurance | 20,000 operations |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077, CSA 22.2 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203MT-C20 protects three-phase electrical circuits against overloads and short circuits, particularly in railway, traction and demanding industrial applications.
The ABB S203MT-C20 has a rated current of 20 A.
The breaker has a 10 kA rated breaking capacity to IEC/EN 60898-1 and a 15 kA rated ultimate breaking capacity to IEC/EN 60947-2.
The C characteristic is intended for circuits with moderate inrush currents, making it suitable for control equipment, automation systems and general industrial loads.
It is designed for DIN rail mounting inside railway electrical cabinets, industrial control panels and automation enclosures.
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and industrial system integrators for dependable circuit protection, excellent reliability and long service life in demanding transport and industrial environments.
● 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...