Why Choose the ABB S204MT-K40UC Miniature Circuit Breaker?
The ABB S204MT-K40UC is a four-pole miniature circuit breaker (MCB) designed for reliable overload and short-circuit protection in AC and DC electrical systems, with particular suitability for traction and railway applications. As part of the ABB System pro M compact S200MT series, it combines a K tripping characteristic with universal-current capability for demanding rolling-stock and railway electrical installations.
This circuit breaker provides dependable protection and switching of electrical circuits while supporting both alternating-current and direct-current applications. The UC version is designed for universal-current operation, making it suitable for electrical systems where AC and DC circuit protection requirements need to be accommodated within the same product family.
With a rated current of 40 A, a 10 kA rated breaking capacity and four poles, the S204MT-K40UC is suitable for protecting and controlling electrical circuits in railway, traction and associated distribution and control equipment. Its DIN-rail mounting format enables straightforward installation within compatible electrical assemblies.
Key Advantages
- Four-pole miniature circuit breaker designed for traction and railway applications.
- 40 A rated current for circuit protection and control.
- 10 kA rated breaking capacity for reliable short-circuit protection.
- K tripping characteristic suitable for circuits with higher inrush currents.
- Universal AC and DC operation with the UC configuration.
- DIN-rail mounting for straightforward installation in electrical equipment.
Key Features
- ABB System pro M compact S200MT series.
- 40 A rated current.
- 10 kA rated breaking capacity.
- 4-pole configuration.
- K tripping characteristic.
- Suitable for AC and DC applications.
- Designed for traction and railway applications.
- DIN-rail mounting for modular electrical installations.
Reliable Circuit Protection for Traction and Railway Systems
Miniature circuit breakers such as the ABB S204MT-K40UC protect electrical circuits against overloads and short circuits by automatically interrupting the circuit when excessive current conditions occur. The K tripping characteristic provides a response profile suited to applications where connected equipment can produce higher starting or inrush currents.
The S200MT series is developed for traction and railway applications where robust AC and DC circuit protection is required. Its four-pole configuration and compact DIN-rail format make the S204MT-K40UC suitable for integration into railway electrical equipment, traction systems and associated distribution and control assemblies.
Typical Applications
- Railway and rolling-stock electrical systems.
- Traction equipment and auxiliary circuits.
- AC and DC distribution systems.
- Electrical control and protection panels.
- Railway electrical control and automation equipment.
- DIN-rail mounted electrical distribution assemblies.
