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ABB S201MT-Z50NAH01 MCB – S200M – 1P+N – Z – 50A
ABB S201MT-Z50NAH01 miniature circuit breaker with 50 A rated current, Z characteristic, 1P+N configuration and 10 kA breaking capacity for railway, traction and industrial circuit protection.
Why Choose the ABB S201MT-Z50NAH01 Miniature Circuit Breaker?
The ABB S201MT-Z50NAH01 is a robust miniature circuit breaker (MCB) engineered for dependable overload and short circuit protection in railway, traction and industrial electrical systems. As part of the specialist ABB S200MT series, it is designed specifically for demanding rolling stock and railway applications where safety, reliability and long service life are essential.
The S200MT range combines thermal overload and magnetic short circuit protection within a compact, current limiting device that helps minimise fault energy and protect electrical equipment. Designed for harsh environments, it complies with recognised international standards and is compatible with ABB System pro M Compact accessories for flexible installation and signalling.
Featuring a 50 A rated current, Z characteristic tripping curve and 1P + N configuration, the ABB S201MT-Z50NAH01 is ideal for protecting sensitive circuits that require rapid magnetic tripping while providing reliable switching of the neutral conductor. Its compact DIN rail mounted design allows straightforward installation in electrical distribution boards and railway control cabinets.
Key Advantages
- Compact miniature circuit breaker designed for railway and industrial applications.
- 50 A rated current for higher current protection.
- Z characteristic provides rapid magnetic tripping for sensitive circuits.
- 1P + N configuration with protected phase and switched neutral.
- Current limiting design reduces fault energy.
- Compatible with ABB System pro M Compact accessories.
Key Features
- ABB S200MT miniature circuit breaker series.
- 50 A rated current.
- Z characteristic tripping curve.
- 1P + N configuration.
- 10 kA breaking capacity.
- Thermal overload protection.
- Electromagnetic short circuit protection.
- DIN rail mounting for control panels and distribution boards.
Reliable Circuit Protection for Sensitive Electrical Systems
The ABB S201MT-Z50NAH01 automatically disconnects electrical circuits during overload and short circuit conditions, protecting equipment, wiring and connected devices. Its Z characteristic provides fast magnetic tripping, making it particularly suitable for sensitive electronic circuits and specialised railway control systems.
Designed specifically for railway and traction applications, the S200MT series combines dependable operation, compact dimensions and current limiting technology. The 1P + N configuration protects the phase conductor while simultaneously switching the neutral, making it ideal for modern electrical distribution and control systems.
Typical Applications
- Railway rolling stock.
- Traction electrical systems.
- Sensitive electronic control circuits.
- Industrial automation panels.
- Power distribution equipment.
- OEM machinery and electrical cabinets.
Technical Specifications
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| Phase | Single Phase | |
|---|---|---|
| Current | 50 A | |
| Poles | 1-pole + N | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S201MT-Z50NAH01 | |
| Product type | Miniature circuit breaker (MCB) | |
| Manufacturer part number | 2CDO271106R0578 | |
| Rated current | 50 A | |
| Tripping characteristic | Z | |
| Number of poles | 1P + N | |
| Number of protected poles | 1 | |
| Rated operational voltage | 230 / 400 V AC | |
| Rated insulation voltage | 440 V | |
| Frequency | 50 / 60 Hz | |
| Rated short circuit breaking capacity | 10 kA | |
| Rated ultimate breaking capacity (Icu) | 15 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 35 × 69 mm | |
| Weight | approx. 0.25 kg |
Frequently Asked Questions
What is the ABB S201MT-Z50NAH01 used for?
It provides overload and short circuit protection for railway, traction and industrial electrical circuits requiring dependable circuit protection.
What is the rated current of this breaker?
The ABB S201MT-Z50NAH01 has a 50 A rated current.
What does the Z characteristic mean?
The Z characteristic provides rapid magnetic tripping and is intended for protecting sensitive electrical and electronic circuits.
What does the 1P + N configuration provide?
It protects the phase conductor while switching the neutral conductor, making it suitable for single phase distribution and control circuits.
How is the breaker installed?
The breaker is designed for installation on a standard 35 mm DIN rail inside electrical distribution boards and control panels.
Trusted by Railway Engineers Worldwide
ABB S200MT miniature circuit breakers are trusted by railway operators, panel builders and industrial engineers for dependable circuit protection, compact installation and reliable long term performance.
