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ABB S203MT-C20 MCB – S200M – 3P – C – 20A
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.
£88.95
Why Choose the ABB S203MT-C20 Miniature Circuit Breaker?
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.
Key Advantages
- Designed specifically for railway and traction applications.
- 20 A rated current for dependable circuit protection.
- C characteristic suitable for moderate inrush current loads.
- 10 kA breaking capacity for reliable fault protection.
- Current limiting Energy Class 3 construction.
- Compact DIN rail mounted design.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB S200MT railway miniature circuit breaker series.
- Model: S203MT-C20.
- Rated current: 20 A.
- Number of poles: 3.
- C characteristic tripping curve.
- 10 kA rated short-circuit breaking capacity.
- Thermal overload and magnetic short circuit protection.
- Current limiting Energy Class 3.
- DIN rail mounting.
- Compatible with auxiliary contacts, signalling contacts and shunt trip accessories.
Reliable Circuit Protection for Railway and Industrial 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.
Typical Applications
- Railway rolling stock.
- Traction electrical systems.
- Auxiliary railway equipment.
- Industrial control panels.
- Automation and PLC systems.
- Machine building and OEM equipment.
- Three-phase electrical distribution.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 10 kA | |
| 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 |
Frequently Asked Questions
What is the ABB S203MT-C20 used for?
The ABB S203MT-C20 protects three-phase electrical circuits against overloads and short circuits, particularly in railway, traction and demanding industrial applications.
What is the rated current of the S203MT-C20?
The ABB S203MT-C20 has a rated current of 20 A.
What is the breaking capacity of this miniature circuit breaker?
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.
What does the C characteristic mean?
The C characteristic is intended for circuits with moderate inrush currents, making it suitable for control equipment, automation systems and general industrial loads.
Where is the ABB S203MT-C20 typically installed?
It is designed for DIN rail mounting inside railway electrical cabinets, industrial control panels and automation enclosures.
Trusted by Railway and Industrial Professionals
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.
