Why Choose the ABB S203MT-K4H10 Miniature Circuit Breaker?
The ABB S203MT-K4H10 is a premium 3-pole miniature circuit breaker (MCB) from the ABB System pro M compact S200MT series. Specifically developed for traction, railway and demanding industrial applications, it delivers dependable protection against overloads and short circuits while maintaining excellent reliability in harsh operating environments.
The S200MT range incorporates ABB's advanced current-limiting technology with both a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short-circuit protection. Its K curve characteristic is ideal for circuits with higher inrush currents, making it suitable for motors, transformers, contactors and other inductive loads.
With a 4 A rated current, 3-pole configuration and 10 kA breaking capacity, the S203MT-K4H10 provides dependable protection for three-phase circuits in railway vehicles, industrial machinery and automation systems. Its compact DIN rail design enables straightforward installation inside modern control panels and electrical enclosures.
Key Advantages
- Compact 3-pole miniature circuit breaker for railway and industrial applications.
- 4 A rated current for precise circuit protection.
- K curve tripping characteristic suitable for high inrush current loads.
- 10 kA rated short-circuit breaking capacity.
- Current-limiting design helps minimise fault energy.
- DIN rail mounting for fast installation.
Key Features
- ABB System pro M compact S200MT series.
- Model: S203MT-K4H10.
- Alternative Product ID: 2CDV273006R0337.
- Rated current: 4 A.
- K curve tripping characteristic.
- 3-pole configuration.
- Thermal overload and electromechanical short-circuit protection.
- Failsafe bi-directional cylinder-lift screw terminals.
Reliable Protection for Railway and Industrial Systems
Miniature circuit breakers automatically disconnect electrical circuits when overloads or short circuits occur, protecting wiring and connected equipment from damage. The ABB S203MT-K4H10 combines thermal and magnetic tripping technologies to provide dependable protection in demanding railway and industrial environments.
Its K curve characteristic is particularly suited to applications with higher inrush currents, making it ideal for transformers, contactors, motors and other inductive loads where reliable protection without nuisance tripping is essential.
Typical Applications
- Railway rolling stock.
- Industrial control panels.
- Motor control circuits.
- Transformer protection.
- Automation systems.
- OEM machinery.
