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ABB S201MT-K50NAH01 MCB – S200M – 1P+N – K – 50A
ABB S201MT-K50NAH01 single pole 50 A miniature circuit breaker with K characteristic, 10 kA breaking capacity and integrated H01 auxiliary contact for traction, railway and industrial electrical applications.
Why Choose the ABB S201MT-K50NAH01 Miniature Circuit Breaker?
The ABB S201MT-K50NAH01 is a robust miniature circuit breaker (MCB) designed to provide reliable overload and short circuit protection in demanding electrical installations. As part of the specialist ABB S200MT series, it is suitable for traction, rolling stock and railway applications where dependable performance, compact installation and long operational life are essential.
This model features a K characteristic tripping curve, making it suitable for circuits with higher inrush currents such as motors, transformers, coils and inductive loads. The K curve helps reduce nuisance tripping during normal start-up conditions whilst maintaining effective protection during electrical faults.
With a rated current of 50 A, single pole configuration, 10 kA breaking capacity and integrated H01 auxiliary contact, the S201MT-K50NAH01 provides both circuit protection and remote status indication for monitored railway, traction and industrial electrical systems.
Key Advantages
- Compact miniature circuit breaker for railway and traction applications.
- 50 A rated current for protected electrical circuits.
- K characteristic tripping curve for circuits with higher inrush currents.
- 10 kA short circuit breaking capacity.
- Integrated H01 auxiliary contact for remote status indication.
- DIN rail mounting for quick installation in control panels and distribution boards.
Key Features
- ABB S200MT miniature circuit breaker series.
- 50 A rated current.
- K characteristic thermal magnetic trip curve.
- Single pole configuration.
- 10 kA breaking capacity.
- Integrated H01 auxiliary contact.
- Designed for traction, railway and industrial electrical systems.
- DIN rail mounting for panel installation.
Reliable Protection for Traction and Industrial Circuits
The ABB S200MT range is engineered for demanding transport and industrial environments where circuit protection devices must deliver consistent performance under electrical and mechanical stress. The K curve characteristic makes this breaker well suited to inductive loads and circuits where temporary start-up currents are expected.
The integrated auxiliary contact enables remote indication of breaker status, supporting modern control, monitoring and signalling systems used in railway vehicles, traction equipment and industrial automation panels.
Typical Applications
- Railway rolling stock electrical systems.
- Traction and transport control panels.
- Motor and transformer protection circuits.
- Industrial automation equipment.
- Control panels and distribution boards.
- OEM electrical assemblies.
Technical Specifications
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| Phase | Single Phase | |
|---|---|---|
| Poles | 1-pole + N | |
| Current | 50 A | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S201MT-K50NAH01 | |
| Product ID | 2CDO271106R0577 | |
| Product type | Miniature circuit breaker | |
| Rated current | 50 A | |
| Tripping characteristic | K | |
| Number of poles | 1 | |
| Breaking capacity | 10 kA | |
| Auxiliary contact | H01 integrated | |
| Mounting type | DIN rail | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| Application | Railway, traction and industrial electrical installations |
Frequently Asked Questions
What is the ABB S201MT-K50NAH01 used for?
It is used to provide overload and short circuit protection in railway, traction, industrial control and electrical distribution circuits.
What is the rated current of this circuit breaker?
The ABB S201MT-K50NAH01 has a rated current of 50 A.
What does the K tripping characteristic mean?
The K curve is designed for circuits with higher inrush currents, making it suitable for motors, transformers and inductive loads.
Does the S201MT-K50NAH01 include an auxiliary contact?
Yes. This model includes an integrated H01 auxiliary contact for remote status indication and monitoring.
Where is this MCB typically installed?
It is typically installed on a DIN rail inside railway electrical cabinets, industrial control panels and distribution boards.
Trusted by Railway and Industrial Engineers Worldwide
ABB S200MT miniature circuit breakers are trusted by railway engineers, OEM machine builders and industrial panel manufacturers for reliable circuit protection, compact installation and dependable performance in demanding applications.
