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ABB S201MT-K20NAH10 MCB – S200M – 1P+N – K – 20A
ABB S201MT-K20NAH10 miniature circuit breaker featuring a 20 A rated current, K tripping characteristic and high performance protection for industrial and railway electrical installations.
Why Choose the ABB S201MT-K20NAH10 Miniature Circuit Breaker?
The ABB S201MT-K20NAH10 is a high performance single pole miniature circuit breaker (MCB) from the trusted ABB S200MT railway and traction series. Designed for demanding industrial, railway and rolling stock applications, it provides dependable protection against overloads and short circuits while maintaining reliable operation in harsh environments.
Manufactured to meet recognised international standards, the S200MT range combines ABB's proven thermal magnetic protection technology with a compact DIN rail mounted design. Its robust construction makes it suitable for applications where vibration resistance, reliability and long service life are essential.
With a 20 A rated current, K tripping characteristic and high breaking capacity, the S201MT-K20NAH10 is ideal for protecting motors, transformers, control circuits and industrial electrical installations requiring higher inrush current tolerance.
Key Advantages
- High quality ABB miniature circuit breaker for industrial and railway applications.
- 20 A rated current with K tripping characteristic.
- Protects against overload and short circuit faults.
- Compact DIN rail mounting for control panels and distribution boards.
- Reliable thermal magnetic trip mechanism.
- Designed for demanding environments with excellent mechanical durability.
Key Features
- ABB S200MT series.
- Single pole (1P) miniature circuit breaker.
- 20 A rated current.
- K tripping characteristic for higher inrush current applications.
- 10 kA breaking capacity in accordance with IEC/EN 60947-2.
- Suitable for AC and selected DC applications.
- DIN rail mounting.
- Robust screw terminals with secure cable connection.
Reliable Circuit Protection for Industrial Systems
The ABB S200MT series delivers dependable protection by combining thermal overload protection with rapid magnetic short circuit protection. This dual protection mechanism helps minimise equipment damage while improving electrical system reliability and operational safety.
Its K curve tripping characteristic is particularly suited to applications with higher starting currents, including motors, transformers and inductive loads commonly found in industrial machinery and railway systems.
Typical Applications
- Railway and rolling stock electrical systems.
- Industrial control panels.
- Motor protection circuits.
- Transformer protection.
- Machine building and OEM equipment.
- Power distribution systems.
Technical Specifications
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| Phase | Single Phase | |
|---|---|---|
| Poles | 1-pole + N | |
| Current | 20 A | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S201MT-K20NAH10 | |
| Product type | Miniature circuit breaker | |
| Rated current | 20 A | |
| Number of poles | 1 | |
| Tripping characteristic | K | |
| Rated operational voltage | Up to 253 V AC | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | Up to 10 kA | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail | |
| Terminal type | Screw terminals |
Frequently Asked Questions
What is the ABB S201MT-K20NAH10 used for?
It protects electrical circuits against overloads and short circuits in industrial, railway and automation applications.
What is the rated current?
This miniature circuit breaker has a 20 A rated current.
What does the K tripping characteristic mean?
The K characteristic provides increased tolerance for higher inrush currents, making it suitable for motors, transformers and inductive loads.
How is the breaker installed?
The breaker mounts directly onto a standard 35 mm DIN rail inside electrical distribution boards or control panels.
Which standards does it comply with?
The S201MT-K20NAH10 complies with IEC/EN 60898-1 and IEC/EN 60947-2 for miniature circuit breakers.
Trusted by Industry Worldwide
ABB miniature circuit breakers are trusted by engineers, OEMs and panel builders worldwide for delivering reliable circuit protection, consistent performance and long service life across industrial and railway installations.
