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ABB S201MT-K50NA MCB – S200M – 1P+N – K – 50A
ABB S201MT-K50NA miniature circuit breaker with 1+N configuration, 50 A rated current, K trip characteristic and 10 kA breaking capacity for railway and industrial applications.
£118.72
Why Choose the ABB S201MT-K50NA Miniature Circuit Breaker?
The ABB S201MT-K50NA is a high performance 1P+N miniature circuit breaker (MCB) developed specifically for railway, traction and demanding industrial applications. As part of the specialist ABB S200MT series, it provides dependable overload and short circuit protection whilst meeting the stringent requirements of modern rolling stock and transport infrastructure.
Designed for continuous operation in harsh environments, the S201MT-K50NA combines a delayed thermal tripping mechanism for overload protection with an electromechanical tripping mechanism for rapid short circuit interruption. Its compact DIN rail mounted construction enables straightforward installation within electrical control panels, distribution boards and railway electrical cabinets.
Featuring a 50 A rated current, K characteristic trip curve and a 10 kA short circuit breaking capacity, this miniature circuit breaker is ideally suited to protecting motors, transformers and other inductive loads with higher inrush currents whilst maintaining excellent fault protection and operational reliability.
Key Advantages
- Designed specifically for railway and traction applications.
- 50 A rated current for dependable circuit protection.
- K characteristic tripping suitable for circuits with higher inrush currents.
- 1P+N configuration with switched neutral.
- 10 kA short circuit breaking capacity.
- Compatible with the complete range of ABB System pro M Compact accessories.
Key Features
- ABB S200MT railway miniature circuit breaker series.
- 50 A rated operational current.
- K trip characteristic.
- 1+N pole configuration.
- 230 V AC rated operational voltage.
- 10 kA rated short circuit capacity.
- Thermal and electromechanical tripping mechanisms.
- DIN rail mounting with failsafe bi-directional cylinder-lift screw terminals.
Reliable Circuit Protection for Railway Applications
The ABB S200MT range has been developed specifically for railway and traction installations where electrical protection devices must withstand demanding operating conditions including vibration, temperature fluctuations and continuous service. The S201MT-K50NA provides dependable protection against overloads and short circuits whilst ensuring reliable long-term operation.
Its K characteristic permits higher inrush currents during equipment start-up, making it particularly suitable for motors, transformers and other inductive loads without unnecessary nuisance tripping.
Typical Applications
- Railway rolling stock electrical systems.
- Traction auxiliary power circuits.
- Industrial motor protection.
- Transformer and inductive load protection.
- Industrial control panels.
- Machine building and automation systems.
Technical Specifications
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| Current | 50 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole + N | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S201MT-K50NA | |
| Product type | Miniature circuit breaker | |
| Rated current | 50 A | |
| Trip characteristic | K | |
| Number of poles | 1+N | |
| Number of protected poles | 1 | |
| Rated operational voltage | 230 V AC | |
| Rated insulation voltage | 440 V | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 10 kA | |
| Rated ultimate short circuit breaking capacity | 15 kA | |
| Rated service short circuit breaking capacity | 7.5 kA | |
| Rated impulse withstand voltage | 4 kV | |
| Energy limiting class | 3 | |
| Power loss | 6 W | |
| Protection rating | IP20 (IP40 when installed within an enclosure) | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 88 × 35 × 69 mm | |
| Weight | Approx. 0.29 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S201MT-K50NA used for?
The S201MT-K50NA protects electrical circuits against overloads and short circuits in railway, traction and industrial electrical installations.
What is the rated current of this circuit breaker?
The ABB S201MT-K50NA has a 50 A rated current.
What does the K trip characteristic mean?
The K characteristic is designed for circuits with higher inrush currents, making it suitable for motors, transformers and other inductive loads.
What is the short circuit breaking capacity?
This miniature circuit breaker provides a 10 kA rated short circuit breaking capacity.
Where is the S201MT-K50NA installed?
It is designed for installation on DIN rails within railway electrical cabinets, industrial control panels and electrical distribution boards.
Trusted for Railway and Industrial Protection
ABB S200MT miniature circuit breakers are trusted worldwide by railway operators, machine builders and industrial engineers to provide reliable circuit protection in demanding electrical environments.
