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ABB S203MT-Z3NAH10 MCB – S200M – 3P+N – Z – 3A
ABB S203MT-Z3NAH10 miniature circuit breaker with Z characteristic, 3A rated current, 3P+N configuration and 10 kA breaking capacity for industrial and railway applications.
Why Choose the ABB S203MT-Z3NAH10 Miniature Circuit Breaker?
The ABB S203MT-Z3NAH10 is a high-performance three-pole plus neutral (3P+N) miniature circuit breaker (MCB) engineered for demanding industrial and railway applications requiring precise protection of sensitive electrical circuits. Part of the proven ABB S200MT series, this circuit breaker delivers dependable overload and short-circuit protection while meeting stringent performance requirements.
Designed with a Z characteristic tripping curve, the S203MT-Z3NAH10 provides rapid disconnection for low fault currents, making it particularly suitable for protecting sensitive electronic equipment, signalling systems and specialised control circuits. Its compact modular construction simplifies installation whilst ensuring long-term reliability in challenging environments.
Featuring a 3 A rated current, 10 kA breaking capacity and integrated switched neutral, the ABB S203MT-Z3NAH10 is ideal for industrial automation, transportation systems, electrical control panels and OEM equipment where dependable circuit protection is essential.
Key Advantages
- Compact 3P+N miniature circuit breaker for industrial and railway applications.
- Z characteristic for sensitive circuit protection.
- 10 kA short-circuit breaking capacity.
- Integrated switched neutral for enhanced installation flexibility.
- Suitable for DIN rail mounting within electrical distribution panels.
- Designed for reliable long-term protection in demanding environments.
Key Features
- ABB S200MT miniature circuit breaker series.
- Model: S203MT-Z3NAH10.
- Rated current: 3 A.
- Z tripping characteristic.
- 3 protected poles plus switched neutral (3P+N).
- 10 kA breaking capacity.
- Thermal overload and magnetic short-circuit protection.
- DIN rail mounting for modular distribution systems.
Reliable Protection for Sensitive Electrical Circuits
The ABB S203MT-Z3NAH10 protects electrical installations against overloads and short circuits whilst maintaining reliable operation of sensitive electronic equipment. Its Z characteristic provides rapid magnetic tripping at relatively low fault currents, helping safeguard delicate devices from damage.
Developed for industrial automation, transportation and railway applications, the S200MT range combines dependable performance with high mechanical endurance, making it suitable for demanding environments where system availability is critical.
Typical Applications
- Industrial control panels.
- Railway and traction systems.
- Sensitive electronic control circuits.
- PLC and automation equipment.
- OEM machinery.
- Electrical distribution systems.
Technical Specifications
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| Current | 3 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S203MT-Z3NAH10 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 3 A | |
| Tripping characteristic | Z | |
| Number of poles | 3P+N | |
| Protected poles | 3 | |
| Rated short-circuit breaking capacity | 10 kA | |
| Frequency | 50 / 60 Hz | |
| Mounting type | DIN rail | |
| Terminal type | Screw terminals | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL1077 |
Frequently Asked Questions
What is the ABB S203MT-Z3NAH10 used for?
It provides overload and short-circuit protection for sensitive electrical circuits used in industrial, automation and railway applications.
What does the Z tripping characteristic mean?
The Z characteristic provides very fast magnetic tripping at low fault currents, making it suitable for protecting sensitive electronic equipment.
How many poles does this circuit breaker have?
The S203MT-Z3NAH10 features three protected poles with a switched neutral (3P+N).
What is the breaking capacity?
This miniature circuit breaker offers a 10 kA rated short-circuit breaking capacity.
Where is this miniature circuit breaker typically installed?
It is designed for installation on standard DIN rails within industrial control panels, distribution boards and railway electrical systems.
Trusted by Electrical Professionals Worldwide
ABB S200MT miniature circuit breakers are trusted by engineers, panel builders and OEM manufacturers for delivering dependable circuit protection, high reliability and long service life in demanding industrial and transportation applications.
