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2CDS273447R0505 ABB S203MTR-B50 50 A 3P Type B 10 kA Miniature Circuit Breaker
ABB S203MTR-B50 is a 50 A 3-pole Type B miniature circuit breaker with 10 kA short-circuit breaking capacity for railway, traction and industrial circuit protection.
£328.86
Why Choose the ABB S203MTR-B50 Miniature Circuit Breaker?
The ABB S203MTR-B50 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 B tripping characteristic is suited to circuits with relatively low inrush currents, providing responsive protection for distribution, auxiliary and equipment circuits while maintaining effective protection against sustained overloads and short circuits.
With a rated current of 50 A, a 3-pole configuration and a rated short-circuit capacity of 10 kA, the S203MTR-B50 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.
- 50 A rated current for electrical distribution and equipment circuits.
- 3-pole configuration for simultaneous three-pole circuit protection.
- Type B tripping characteristic suitable for circuits with relatively low 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.
- 50 A rated current.
- 3-pole configuration.
- Type B trip characteristic.
- 10 kA rated short-circuit capacity.
- Thermal release for sustained overload protection.
- Electromagnetic release for short-circuit protection.
- Modular construction for electrical distribution and control equipment.
- DIN-rail mounting for convenient panel installation.
Reliable Circuit Protection for Railway and Industrial Systems
Miniature circuit breakers such as the ABB S203MTR-B50 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 B characteristic makes this model suitable for circuits where normal operating currents have relatively low inrush levels. Combined with ABB's traction-oriented MCB platform, the S203MTR-B50 provides dependable protection for demanding railway, transportation and industrial electrical systems requiring reliable three-pole circuit protection.
Typical Applications
- Railway and rolling-stock electrical systems.
- Traction and transportation electrical equipment.
- Industrial electrical distribution circuits.
- Auxiliary electrical circuits.
- Control and automation cabinets.
- Three-pole circuits with relatively low inrush currents.
Technical Specifications
| Series | S203MTR |
|---|---|
| ABB order code | 2CDS273447R0505 |
| Product group | DC / Traction MCB |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 50 A |
| Tripping characteristic | Type B |
| 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-B50 used for?
The S203MTR-B50 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-B50?
The ABB S203MTR-B50 has a rated current of 50 A.
What does the Type B characteristic mean?
The Type B tripping characteristic is suited to circuits with relatively low inrush currents, providing responsive fault protection for distribution, auxiliary and equipment circuits.
How many poles does the S203MTR-B50 have?
The S203MTR-B50 has a 3-pole configuration, allowing three conductors to be protected and switched together.
What is the breaking capacity of the ABB S203MTR-B50?
The S203MTR-B50 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.
