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ABB S201MT-Z4NA MCB – S200M – 1P+N – Z – 4A
ABB S201MT-Z4NA miniature circuit breaker from the S200MT series, featuring 4 A rated current, Z characteristic, 1P+N configuration and 10 kA breaking capacity for railway and traction applications.
Why Choose the ABB S201MT-Z4NA Miniature Circuit Breaker?
The ABB S201MT-Z4NA is a specialist 1P+N miniature circuit breaker (MCB) designed for traction, railway and transport electrical applications. Part of the reliable ABB S200MT series, it provides dependable protection against overloads and short circuits in demanding installations where compact design, safety and consistent performance are essential.
Built with ABB thermal and electromechanical tripping technology, the S201MT-Z4NA combines delayed overload protection with fast short circuit interruption. Its Z characteristic provides sensitive fault protection, making it particularly suitable for electronic equipment, control circuits and low current loads that require rapid disconnection.
With a 4 A rated current, Z characteristic trip curve and 10 kA breaking capacity, the ABB S201MT-Z4NA is ideal for railway control panels, signalling equipment, auxiliary circuits and sensitive electrical systems. Its DIN rail mounted format allows straightforward installation inside compact distribution boards and switchgear assemblies.
Key Advantages
- Specialist miniature circuit breaker for railway and traction applications.
- 4 A rated current for low current control and auxiliary circuits.
- Z characteristic trip curve for sensitive fault protection.
- 10 kA short circuit breaking capacity for reliable fault interruption.
- Thermal and electromechanical protection against overloads and short circuits.
- Compact DIN rail mounted design for electrical panels and switchboards.
Key Features
- ABB S200MT miniature circuit breaker series.
- 1P+N configuration.
- 4 A rated current.
- Z characteristic trip curve.
- 10 kA rated short circuit breaking capacity.
- Designed for railway and traction installations.
- Current limiting performance.
- Compatible with ABB System pro M compact accessories.
Sensitive Circuit Protection for Railway Electrical Systems
Miniature circuit breakers such as the ABB S201MT-Z4NA are used to interrupt overloads and short circuits before electrical faults can damage connected equipment, wiring or sensitive control devices. The Z curve characteristic provides rapid response to lower fault currents, making it suitable for circuits that require a more sensitive protection profile.
The ABB S200MT range is engineered for transport environments including rolling stock and railway infrastructure. Its modular construction, DIN rail mounting and accessory compatibility make it a practical choice for control cabinets, distribution assemblies and replacement projects in demanding electrical systems.
Typical Applications
- Railway rolling stock electrical systems.
- Traction control panels.
- Signalling and monitoring equipment.
- Electronic control circuits.
- Auxiliary low current circuits.
- Industrial transport and infrastructure systems.
Technical Specifications
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| Current | 4 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-Z4NA | |
| Product type | Miniature circuit breaker | |
| Rated current | 4 A | |
| Trip characteristic | Z | |
| Number of poles | 1P+N | |
| Protected poles | 1 | |
| Rated operational voltage | 230 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 10 kA | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 35 × 69 mm | |
| Weight | approx. 0.25 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S201MT-Z4NA used for?
The S201MT-Z4NA is used to protect low current electrical circuits against overloads and short circuits, particularly in railway, traction and sensitive control applications.
What is the rated current of this circuit breaker?
The ABB S201MT-Z4NA has a 4 A rated current.
What trip curve does the S201MT-Z4NA use?
This model uses a Z characteristic trip curve, which provides sensitive short circuit protection for electronic and control circuits.
What is the breaking capacity?
The S201MT-Z4NA has a 10 kA short circuit breaking capacity.
How is this miniature circuit breaker mounted?
The breaker is designed for standard DIN rail mounting inside electrical control panels, distribution boards and railway switchgear assemblies.
Trusted by Railway and Industrial Engineers Worldwide
ABB S200MT miniature circuit breakers are trusted in railway and industrial environments to provide compact, reliable and standards-compliant protection for sensitive electrical circuits.
