Why Choose the ABB S203MT-C50 Miniature Circuit Breaker?
The ABB S203MT-C50 is a robust 3-pole miniature circuit breaker (MCB) designed for reliable overload and short circuit protection in railway, traction and demanding industrial applications. As part of the specialised ABB S200MT miniature circuit breaker series, it is engineered for installations where dependable performance, compact design and compliance with railway sector requirements are essential.
This circuit breaker uses a delayed thermal tripping mechanism for overload protection and an electromagnetic tripping mechanism for short circuit protection. Its C characteristic tripping curve makes it suitable for circuits with moderate inrush currents, such as control panels, motors, transformers and auxiliary railway systems.
With a 50 A rated current, 3-pole configuration and 10 kA breaking capacity, the ABB S203MT-C50 provides strong protection for three-phase electrical circuits. Its DIN rail mounted format supports efficient installation in distribution boards, machine panels and rolling stock electrical systems.
Key Advantages
- Specialist 3-pole miniature circuit breaker for railway and industrial installations.
- 50 A rated current suitable for higher load three-phase circuits.
- C characteristic tripping curve for circuits with moderate inrush current.
- 10 kA short circuit breaking capacity for dependable protection.
- Designed for traction and rolling stock applications.
- Compact DIN rail mounting for fast panel installation.
Key Features
- ABB S200MT railway miniature circuit breaker series.
- 50 A rated current.
- 3-pole configuration.
- C characteristic tripping curve.
- 10 kA rated short circuit breaking capacity.
- Thermal overload and electromagnetic short circuit protection.
- DIN rail mounting for modular electrical panels.
- Suitable for railway, traction, automation and industrial distribution systems.
Reliable Circuit Protection for Railway and Industrial Systems
The ABB S200MT range is designed especially for traction and railway applications, providing dependable protection in electrical systems exposed to demanding operational conditions. These miniature circuit breakers help protect conductors, equipment and control circuits from damage caused by overloads and short circuits.
The C curve characteristic of the S203MT-C50 offers a balanced response for general purpose and moderately inductive loads. This makes it well suited for three-phase auxiliary systems, industrial panels and machinery circuits where safe disconnection and continuity of operation are both important.
Typical Applications
- Railway rolling stock electrical systems.
- Traction and transport control panels.
- Three-phase industrial distribution boards.
- Machine control panels.
- Automation and auxiliary power circuits.
- Motors, transformers and moderately inductive loads.
