Why Choose the ABB S203MT-C4NA Miniature Circuit Breaker?
The ABB S203MT-C4NA is a specialist miniature circuit breaker (MCB) from the ABB System pro M Compact S200MT series, designed for traction, railway and demanding industrial electrical applications. Featuring a C characteristic trip curve, it provides reliable overload and short circuit protection for circuits with moderate inrush currents.
The S200MT range is engineered for transport environments where dependable performance, compact installation and safety compliance are essential. This MCB combines delayed thermal overload protection with electromechanical short circuit protection, helping safeguard electrical circuits in rolling stock, rail infrastructure and specialist control panels.
With a rated current of 4 A, a 3P+N configuration and a 10 kA breaking capacity, the S203MT-C4NA is ideal for low-current three-phase circuits requiring neutral switching in traction, railway and specialist industrial installations.
Key Advantages
- Specialist miniature circuit breaker designed for traction and railway applications.
- 4 A rated current for low-current protection circuits.
- C characteristic trip curve suitable for moderate inrush currents.
- 3P+N configuration with three protected poles and switched neutral.
- 10 kA breaking capacity for reliable short circuit protection.
- DIN rail mounting for electrical panels and distribution assemblies.
Key Features
- ABB System pro M Compact S200MT series.
- 4 A rated current.
- C curve tripping characteristic.
- 3P+N pole configuration.
- 10 kA rated short circuit breaking capacity.
- Designed for traction and railway environments.
- Thermal overload and electromechanical short circuit protection.
- Compatible with ABB System pro M Compact accessories.
Reliable Circuit Protection for Traction and Railway Systems
Miniature circuit breakers such as the ABB S203MT-C4NA automatically disconnect electrical circuits when overloads or short circuits occur. The delayed thermal mechanism responds to sustained overload conditions, while the electromechanical trip reacts quickly to short circuit faults.
The S200MT series is designed for traction and railway applications, making it suitable for rolling stock, transport infrastructure and specialist electrical systems where dependable circuit protection and compact DIN rail installation are required.
Typical Applications
- Railway and traction electrical systems.
- Rolling stock control panels.
- Low-current three-phase circuits.
- Transport infrastructure equipment.
- Industrial control panels.
- Electrical installations requiring neutral switching.
