Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
ABB S204MT-K20UC MCB – 4P – K Curve – 20A – 10kA – AC/DC
ABB S204MT-K20UC is a 20 A four-pole K characteristic miniature circuit breaker with a 10 kA breaking capacity for AC and DC traction and railway applications.
£481.93
Why Choose the ABB S204MT-K20UC Miniature Circuit Breaker?
The ABB S204MT-K20UC is a four-pole miniature circuit breaker (MCB) designed for reliable circuit protection and switching in AC and DC electrical systems, with particular suitability for traction and railway applications. As part of the ABB System pro M compact S200MT UC series, it combines a K tripping characteristic with universal current capability for demanding rolling-stock and industrial electrical installations.
This circuit breaker provides protection against overloads and short 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 20 A, a 10 kA rated breaking capacity and four poles, the S204MT-K20UC is suitable for protecting and controlling electrical circuits in railway, traction and other demanding applications. Its DIN-rail mounting format enables straightforward installation within compatible distribution and control equipment.
Key Advantages
- Four-pole miniature circuit breaker designed for traction and railway applications.
- 20 A rated current for circuit protection and control.
- 10 kA rated breaking capacity for reliable short-circuit protection.
- K tripping characteristic suited to 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 UC series.
- 20 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-K20UC 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 UC series is developed for universal-current applications where both AC and DC circuit protection may be required. Its four-pole configuration and compact DIN-rail format make the S204MT-K20UC 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.
- Industrial control and automation equipment.
- DIN-rail mounted electrical distribution assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 20 A | |
|---|---|---|
| Poles | 4-pole | |
| Phase | Three Phase | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Weight | approx. 0.5 kg | |
| Product type | Miniature circuit breaker | |
| Application | Traction / railway applications | |
| Rated current | 20 A | |
| Number of poles | 4 | |
| Tripping characteristic | K | |
| Supply type | AC and DC | |
| Mounting type | DIN-rail mounting | |
| Manufacturer | ABB | |
| Series | System pro M compact S200MT (traction) | |
| Model | S204MT-K20UC | |
| Order code | 2CDS274065R0487 | |
| Rated breaking capacity | 10 kA | |
| Supply | AC/DC |
Frequently Asked Questions
What is the ABB S204MT-K20UC used for?
This circuit breaker provides overload and short-circuit protection for AC and DC electrical circuits, particularly in traction and railway applications.
What is the rated current of this circuit breaker?
The ABB S204MT-K20UC has a rated current of 20 A.
What is the breaking capacity of the S204MT-K20UC?
The circuit breaker has a 10 kA rated breaking capacity.
What tripping characteristic does this circuit breaker have?
The S204MT-K20UC uses a K tripping characteristic, suitable for circuits where higher inrush currents can occur.
Is the S204MT-K20UC suitable for AC and DC applications?
Yes. The UC version is designed for AC and DC applications, making it suitable for universal-current circuit protection requirements.
Trusted by Railway and Traction Engineers Worldwide
ABB System pro M compact S200MT UC miniature circuit breakers provide dependable circuit protection and switching for demanding AC and DC electrical systems, including traction and railway applications.
