Why Choose the ABB S204MT-B63 Miniature Circuit Breaker?
The ABB S204MT-B63 is a robust four-pole miniature circuit breaker (MCB) designed for reliable overcurrent and short-circuit protection in traction, railway and industrial electrical installations. As part of the ABB System pro M compact S200MT series, it is developed for demanding rolling stock applications where dependable circuit protection, mechanical robustness and resistance to harsh operating conditions are essential.
This circuit breaker combines a B tripping characteristic with a 10 kA rated breaking capacity, providing dependable protection for circuits with relatively low inrush currents. The S200MT range is designed for demanding railway environments, with construction intended to meet stringent fire and smoke requirements and withstand the shock and vibration associated with rolling stock applications.
With a rated current of 63 A, four protected poles and an AC supply, the S204MT-B63 is suitable for higher-current distribution and equipment protection in railway vehicles and other demanding electrical systems. Its modular DIN-rail format enables straightforward installation within compatible electrical distribution and control assemblies.
Key Advantages
- Compact four-pole miniature circuit breaker designed for traction and railway applications.
- 63 A rated current for higher-current AC distribution circuits.
- B tripping characteristic suited to circuits with relatively low inrush currents.
- 10 kA rated breaking capacity for effective short-circuit protection.
- Dedicated construction designed for demanding railway and rolling stock environments.
- Designed for operating conditions involving shock and vibration.
- DIN-rail mounting for convenient integration into modular electrical assemblies.
Key Features
- ABB System pro M compact S200MT series.
- 63 A rated current.
- B tripping characteristic.
- 4-pole configuration with four protected poles.
- 10 kA rated breaking capacity.
- AC operating supply.
- DIN-rail mounting for modular electrical distribution systems.
- Contact Position Indicator (CPI) for clear main-contact status indication.
- Construction designed for demanding railway fire and smoke requirements.
- Suitable for environments exposed to mechanical shock and vibration.
Reliable Protection for Railway and Traction Systems
Miniature circuit breakers in the ABB S200MT range are developed specifically for electrical protection in traction and rolling stock applications. Their construction is intended to meet demanding railway fire and smoke requirements, while the range is designed for operating conditions involving the mechanical stresses associated with railway vehicles.
The S204MT-B63 combines thermal and electromagnetic protection with a B characteristic suited to circuits where relatively low transient currents are expected. Its four-pole configuration provides protection across four conductors, while the high breaking capacity helps interrupt fault currents safely within the specified operating conditions.
Typical Applications
- Railway rolling stock electrical systems.
- Traction and auxiliary circuits.
- Railway vehicle distribution panels.
- Higher-current AC distribution and equipment protection.
- Industrial AC distribution systems requiring a B characteristic.
- Control and protection assemblies exposed to vibration and shock.
- Modular DIN-rail electrical installations.
