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ABB S201MT-K20NA MCB – S200M – 1P+N – K – 20A
ABB S201MT-K20NA miniature circuit breaker from the S200MT railway series, featuring 1+N configuration, 20 A rated current, K trip characteristic and 10 kA short circuit breaking capacity.
£91.04
Why Choose the ABB S201MT-K20NA Miniature Circuit Breaker?
The ABB S201MT-K20NA is a robust and reliable 1P+N miniature circuit breaker (MCB) designed for railway, traction and demanding industrial applications. Part of the specialist ABB S200MT series, it provides dependable overload and short circuit protection for electrical circuits where safety, continuity and performance are critical.
Engineered for use in harsh operating environments, the S201MT-K20NA combines thermal overload protection with magnetic short circuit tripping. Its compact DIN rail mounted format makes it suitable for electrical distribution panels, control cabinets and rolling stock installations where space-saving protection is required.
With a 20 A rated current, K characteristic trip curve and 10 kA breaking capacity, the S201MT-K20NA is well suited to circuits with higher inrush currents, including transformers, motors, solenoids and inductive loads commonly used in railway and industrial control systems.
Key Advantages
- Specialist railway miniature circuit breaker for traction applications.
- 20 A rated current for circuit protection duties.
- K curve tripping characteristic suitable for higher inrush loads.
- 1P+N configuration for live and neutral circuit protection.
- 10 kA short circuit breaking capacity for dependable fault interruption.
- Compact DIN rail mounting for fast panel installation.
Key Features
- ABB S200MT miniature circuit breaker series.
- 20 A rated operational current.
- K trip characteristic for inductive and high inrush loads.
- 1+N pole arrangement.
- 230 V AC rated operational voltage.
- 10 kA rated short circuit capacity.
- Thermal-magnetic protection mechanism.
- DIN rail mounting with screw terminal connections.
Reliable Circuit Protection for Railway Applications
The ABB S200MT range has been developed for railway and traction environments where circuit protection devices must perform reliably under demanding conditions. These miniature circuit breakers help protect electrical equipment from overloads and short circuits while supporting safe and dependable operation across rolling stock and onboard systems.
The K curve characteristic makes the S201MT-K20NA suitable for circuits that experience short duration inrush currents during start-up. This helps reduce unwanted tripping while maintaining effective protection against genuine electrical faults.
Typical Applications
- Railway rolling stock electrical systems.
- Traction and auxiliary power circuits.
- Transformer protection circuits.
- Motor and inductive load protection.
- Industrial control panels and distribution boards.
- Automation, signalling and machine control systems.
Technical Specifications
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| Current | 20 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-K20NA | |
| Product type | Miniature circuit breaker | |
| Rated current | 20 A | |
| Trip characteristic | K | |
| Number of poles | 1+N | |
| Rated operational voltage | 230 V AC | |
| Input voltage type | AC/DC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 10 kA at 230 V AC | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | 88 × 35 × 69 mm | |
| Weight | approx. 0.25 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S201MT-K20NA used for?
The S201MT-K20NA is used to protect electrical circuits against overloads and short circuits, especially in railway, traction and industrial control applications.
What is the rated current of the S201MT-K20NA?
The ABB S201MT-K20NA has a 20 A rated current.
What does the K trip curve mean?
The K trip curve is designed for circuits with higher inrush currents, making it suitable for inductive loads such as motors, transformers and solenoids.
What breaking capacity does this MCB provide?
This miniature circuit breaker provides a 10 kA short circuit breaking capacity, supporting reliable protection against fault currents.
How is the ABB S201MT-K20NA installed?
It is designed for DIN rail mounting inside electrical panels, control cabinets and railway electrical enclosures.
Trusted for Railway and Industrial Protection
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and industrial maintenance teams for dependable circuit protection in demanding electrical installations.
