Why Choose the ABB S204MT-K25 Miniature Circuit Breaker?
The ABB S204MT-K25 is a compact and reliable miniature circuit breaker (MCB) designed to provide overload and short-circuit protection for electrical circuits in traction, railway and rolling-stock applications. As part of the ABB System pro M compact S200MT series, this four-pole breaker provides dependable circuit protection for AC electrical systems in demanding railway environments.
The S204MT-K25 combines a K tripping characteristic with a 10 kA rated breaking capacity, providing a defined protection response for suitable circuits and loads with higher starting or inrush currents. Its 25 A rated current makes it suitable for appropriately sized auxiliary, control and distribution circuits.
Designed for AC supply and DIN-rail mounting, the S204MT-K25 is suitable for integration into electrical distribution boards, control cabinets and railway equipment. Its four-pole configuration provides protection and isolation across a multi-pole circuit while maintaining the compact installation format of the System pro M compact range.
Key Advantages
- Compact miniature circuit breaker designed for traction and railway applications.
- 25 A rated current for protection of appropriately sized electrical circuits.
- Four-pole configuration for multi-pole circuit protection and isolation.
- K tripping characteristic for circuits where higher inrush or starting currents can occur.
- 10 kA rated breaking capacity for effective short-circuit protection.
- AC supply capability for railway electrical applications.
- DIN-rail mounting for straightforward installation in distribution and control panels.
Key Features
- ABB System pro M compact S200MT series for traction and railway applications.
- 25 A rated current.
- Four-pole construction.
- K tripping characteristic.
- 10 kA rated breaking capacity.
- Designed for AC applications.
- DIN-rail mounting for electrical distribution and control panels.
- Suitable for railway and rolling-stock electrical protection applications.
Reliable Circuit Protection for Railway Electrical Systems
Miniature circuit breakers such as the ABB S204MT-K25 protect electrical circuits by interrupting the supply when excessive current caused by an overload or short circuit is detected. The K tripping characteristic is suited to applications where the protected circuit can experience higher starting or inrush currents while still requiring defined overload and short-circuit protection.
The S200MT series is designed for traction and railway applications, making the S204MT-K25 suitable for integration into railway electrical distribution, auxiliary power, control and signalling systems where compact circuit protection is required. Its four-pole design allows multiple circuit conductors to be protected and isolated within a single compact device.
Typical Applications
- Railway rolling-stock electrical systems.
- Traction auxiliary circuits.
- Railway control and signalling equipment.
- On-board electrical distribution systems.
- Auxiliary and control circuits in rail vehicles.
- Industrial AC electrical systems requiring compact miniature circuit protection.
