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2CDS273447R0407 ABB S203MTR-K8 8 A 3P Type K 10 kA Miniature Circuit Breaker
ABB S203MTR-K8 is an 8 A 3-pole Type K miniature circuit breaker with 10 kA short-circuit breaking capacity for railway, traction and industrial circuit protection.
£402.62
Why Choose the ABB S203MTR-K8 Miniature Circuit Breaker?
The ABB S203MTR-K8 is a high-performance miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical installations. As part of ABB's specialised traction circuit protection range, it is particularly suited to railway, rolling-stock, traction and industrial applications where dependable protection and compact modular construction are required.
This circuit breaker combines thermal overload protection with electromagnetic short-circuit protection. Its Type K tripping characteristic is particularly suitable for circuits where elevated starting or inrush currents can occur, including inductive loads and control equipment, helping reduce unwanted tripping while maintaining effective fault protection.
With a rated current of 8 A, a 3-pole configuration and a rated short-circuit capacity of 10 kA, the S203MTR-K8 provides coordinated protection across three conductors. Its modular DIN-rail format supports straightforward integration into railway electrical equipment, distribution boards and industrial control panels.
Key Advantages
- High-performance miniature circuit breaker for railway, traction and industrial applications.
- 8 A rated current suitable for auxiliary, control and equipment circuits.
- 3-pole configuration for simultaneous three-pole circuit protection.
- Type K tripping characteristic suitable for circuits with elevated starting or inrush currents.
- 10 kA short-circuit breaking capacity for robust fault protection.
- Thermal-magnetic operation provides overload and short-circuit protection.
- Compact modular construction for straightforward DIN-rail installation.
Key Features
- ABB S203MTR traction miniature circuit breaker.
- 8 A rated current.
- 3-pole configuration.
- Type K trip characteristic.
- 10 kA rated short-circuit capacity.
- Thermal release for sustained overload protection.
- Electromagnetic release for short-circuit protection.
- Designed for demanding traction and industrial circuit protection.
- DIN-rail mounting for convenient panel installation.
Reliable Circuit Protection for Railway and Industrial Systems
Miniature circuit breakers such as the ABB S203MTR-K8 automatically interrupt electrical circuits when excessive current occurs. The thermal release responds to sustained overload conditions, while the electromagnetic release operates rapidly during short circuits, helping protect conductors, connected equipment and downstream electrical installations.
The Type K characteristic makes this model particularly useful for circuits where normal equipment operation can produce elevated transient currents. Combined with ABB's traction-oriented MCB design, the S203MTR-K8 provides dependable protection for railway, transportation, control and industrial electrical circuits.
Typical Applications
- Railway and rolling-stock electrical systems.
- Traction and transportation electrical equipment.
- Auxiliary and control circuits.
- Inductive loads and control equipment.
- Industrial automation and control cabinets.
- Three-pole machine and equipment circuits.
Technical Specifications
| Series | S203MTR |
|---|---|
| ABB order code | 2CDS273447R0407 |
| Product group | DC / Traction MCB |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 8 A |
| Tripping characteristic | Type K |
| Pole configuration | 3P |
| Number of poles | 3 |
| Rated short-circuit capacity | 10 kA |
| Protection function | Overload and short-circuit protection |
| Trip technology | Thermal-magnetic |
| Mounting | DIN rail |
Frequently Asked Questions
What is the ABB S203MTR-K8 used for?
The S203MTR-K8 is a miniature circuit breaker designed to protect three-pole electrical circuits against overloads and short circuits, particularly in railway, traction and industrial installations.
What is the rated current of the S203MTR-K8?
The ABB S203MTR-K8 has a rated current of 8 A.
What does the Type K characteristic mean?
The Type K tripping characteristic is suitable for circuits that can experience elevated starting or inrush currents, including inductive loads and control equipment, while maintaining effective overload and short-circuit protection.
How many poles does the S203MTR-K8 have?
The S203MTR-K8 has a 3-pole configuration, allowing three conductors to be protected and switched together.
What is the breaking capacity of the ABB S203MTR-K8?
The S203MTR-K8 has a rated short-circuit breaking capacity of 10 kA.
Trusted ABB Circuit Protection
ABB traction miniature circuit breakers provide compact and dependable overload and short-circuit protection for demanding railway, rolling-stock, transportation and industrial electrical installations.
