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ABB S201MT-Z50NA MCB – S200M – 1P+N – Z – 50A
ABB S201MT-Z50NA miniature circuit breaker from the S200MT railway series, featuring 1+N configuration, 50 A rated current, Z trip characteristic and 10 kA short circuit breaking capacity.
Why Choose the ABB S201MT-Z50NA Miniature Circuit Breaker?
The ABB S201MT-Z50NA is a dependable 1P+N miniature circuit breaker (MCB) designed for railway, traction and demanding industrial applications. Part of the specialist ABB S200MT series, it provides reliable overload and short circuit protection for electrical systems where safety, compact installation and long-term performance are essential.
Engineered for challenging environments, the S201MT-Z50NA uses a thermal-magnetic tripping mechanism to protect circuits against overloads and short circuit fault currents. Its DIN rail mounted construction allows straightforward integration into railway electrical cabinets, distribution boards and industrial control panels.
With a 50 A rated current, Z characteristic trip curve and 10 kA short circuit breaking capacity, this miniature circuit breaker is suitable for sensitive circuits requiring rapid magnetic tripping. It is commonly used where fast disconnection helps protect downstream control, electronic and auxiliary equipment.
Key Advantages
- Specialist ABB S200MT railway miniature circuit breaker.
- 50 A rated current for dependable circuit protection.
- Z trip characteristic for sensitive short circuit protection.
- 1P+N configuration with switched neutral conductor.
- 10 kA short circuit breaking capacity for reliable fault interruption.
- Compact DIN rail mounted design for efficient panel installation.
Key Features
- ABB S200MT railway miniature circuit breaker series.
- 50 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 Railway and Control Circuits
The Z curve characteristic of the ABB S201MT-Z50NA provides rapid magnetic tripping for circuits that require fast fault disconnection. This makes it suitable for protecting sensitive loads, electronic equipment, control circuits and auxiliary railway systems where downstream components need effective protection.
As part of the ABB S200MT railway range, this breaker supports dependable operation in demanding installations. Its compact design, proven ABB switching performance and DIN rail compatibility make it suitable for new panel builds, maintenance work and replacement applications.
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 | 50 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-Z50NA | |
| Product type | Miniature circuit breaker | |
| Product ID | 2CDS271106R0578 | |
| Rated current | 50 A | |
| Trip characteristic | Z | |
| Number of poles | 1+N | |
| Number of protected poles | 1 | |
| 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 ultimate short circuit breaking capacity | 15 kA | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Energy limiting class | 3 | |
| Power loss | approx. 8.8 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-Z50NA used for?
The S201MT-Z50NA 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 the S201MT-Z50NA?
The ABB S201MT-Z50NA has a 50 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 equipment and applications where rapid fault disconnection is required.
What breaking capacity does this MCB provide?
This miniature circuit breaker provides a 10 kA short circuit breaking capacity at 230 V AC.
How is the ABB S201MT-Z50NA 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.
