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ABB S201MT-Z20NA MCB – S200M – 1P+N – Z – 20A
ABB S201MT-Z20NA miniature circuit breaker from the S200MT railway series, featuring 1+N configuration, 20 A rated current, Z trip characteristic and 10 kA short circuit breaking capacity.
Why Choose the ABB S201MT-Z20NA Miniature Circuit Breaker?
The ABB S201MT-Z20NA is a compact and reliable miniature circuit breaker (MCB) designed for precise overload and short circuit protection in railway, traction and industrial electrical systems. Part of the specialist ABB S200MT series, it is engineered for applications requiring dependable circuit protection, compact panel installation and consistent performance in demanding environments.
This MCB uses a thermal-magnetic trip mechanism to protect electrical circuits against overloads and fault currents. The delayed thermal element responds to sustained overloads, while the electromagnetic trip mechanism provides rapid disconnection during short circuit conditions. Its DIN rail mounted format allows straightforward integration into control panels, distribution boards and railway electrical enclosures.
With a rated current of 20 A, a Z trip characteristic and a 10 kA short circuit breaking capacity, the S201MT-Z20NA is suitable for sensitive circuits where fast magnetic tripping is required. It is commonly used for protecting control circuits, electronic devices and applications where lower fault current thresholds are needed.
Key Advantages
- Specialist ABB S200MT miniature circuit breaker for railway and industrial applications.
- 20 A rated current for dependable circuit protection.
- Z curve tripping characteristic for sensitive circuit protection.
- 1P+N configuration for phase and neutral circuit switching.
- 10 kA rated short circuit capacity for reliable fault interruption.
- Compact DIN rail mounted design for efficient panel installation.
Key Features
- ABB S200MT railway miniature circuit breaker series.
- 20 A rated operational current.
- Z trip characteristic for fast magnetic response.
- 1+N pole configuration.
- 230 V AC rated operational voltage.
- 10 kA rated short circuit breaking capacity.
- Thermal and electromagnetic tripping mechanisms.
- DIN rail mounting with screw terminal connections.
Sensitive Protection for Control and Electronic Circuits
The Z characteristic of the ABB S201MT-Z20NA provides fast magnetic tripping for circuits that require sensitive short circuit protection. This makes it well suited to electronic equipment, control circuits and installations where downstream components must be protected quickly from fault currents.
As part of the ABB S200MT railway range, this breaker supports robust circuit protection in applications where compact dimensions, proven switching performance and high reliability are essential. Its DIN rail format and compatibility with ABB modular accessories make it suitable for both new builds and maintenance replacement work.
Typical Applications
- Railway rolling stock electrical systems.
- Traction auxiliary circuits.
- Control circuit protection.
- Electronic equipment and sensitive loads.
- Industrial automation panels.
- Distribution boards and electrical cabinets.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole + N | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S201MT-Z20NA | |
| Product type | Miniature circuit breaker | |
| Rated current | 20 A | |
| Trip characteristic | Z | |
| Number of poles | 1+N | |
| Rated operational voltage | 230 V AC | |
| Voltage type | AC | |
| Rated frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 10 kA at 230 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Energy limiting class | 3 | |
| Power loss | 5.6 W | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| 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-Z20NA used for?
The S201MT-Z20NA is used to protect electrical circuits against overloads and short circuits, particularly in railway, traction, control panel and industrial automation applications.
What is the rated current of this MCB?
The ABB S201MT-Z20NA has a 20 A rated current.
What does the Z trip characteristic mean?
The Z trip characteristic provides fast magnetic tripping, making the breaker suitable for sensitive circuits, electronic devices and applications where rapid fault disconnection is required.
What is the short circuit breaking capacity?
This miniature circuit breaker provides a 10 kA short circuit breaking capacity at 230 V AC.
How is the ABB S201MT-Z20NA installed?
It is designed for DIN rail mounting inside electrical panels, distribution boards and railway electrical enclosures.
Trusted for Railway and Industrial Circuit Protection
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and industrial maintenance teams for dependable overload and short circuit protection in demanding electrical installations.
