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ABB S203MT-Z8NAH10 MCB – S200M – 3P+N – Z – 8A
ABB S203MT-Z8NAH10 miniature circuit breaker with Z characteristic, 8 A rated current, 3P+N configuration and 10 kA breaking capacity for industrial, railway and automation applications.
Why Choose the ABB S203MT-Z8NAH10 Miniature Circuit Breaker?
The ABB S203MT-Z8NAH10 is a high-performance three-pole plus neutral (3P+N) miniature circuit breaker (MCB) designed to provide dependable overload and short-circuit protection for industrial, railway and transportation electrical systems. As part of the proven ABB S200MT series, it delivers reliable circuit protection for demanding low-voltage applications.
Featuring a Z tripping characteristic, this miniature circuit breaker is engineered for protecting sensitive electronic equipment, PLCs, signalling systems and control circuits where rapid fault disconnection at relatively low fault currents is essential. Its precision tripping characteristics help safeguard valuable equipment whilst maintaining dependable system operation.
With a rated current of 8 A, 3P+N configuration and a 10 kA breaking capacity, the ABB S203MT-Z8NAH10 is ideal for DIN rail mounted control panels, OEM machinery, industrial automation systems and railway electrical installations requiring reliable circuit protection.
Key Advantages
- Compact 3P+N miniature circuit breaker for industrial and railway applications.
- 8 A rated current suitable for sensitive control and distribution circuits.
- Z characteristic provides rapid protection for electronic equipment.
- 10 kA rated short-circuit breaking capacity.
- Integrated switched neutral for flexible installation.
- DIN rail mounting for modular electrical systems.
Key Features
- ABB S200MT miniature circuit breaker series.
- Model: S203MT-Z8NAH10.
- Rated current: 8 A.
- Z tripping characteristic.
- 3 protected poles plus switched neutral (3P+N).
- 10 kA rated breaking capacity.
- Thermal overload and magnetic short-circuit protection.
- Compatible with ABB System pro M compact accessories.
Reliable Protection for Sensitive Electrical Systems
The ABB S203MT-Z8NAH10 combines thermal overload protection with fast magnetic short-circuit protection to safeguard sensitive electrical installations. Its Z characteristic enables rapid tripping at low fault currents, helping protect electronic equipment from damage whilst maintaining safe system operation.
Designed for industrial automation, transportation and railway applications, the S200MT range provides dependable long-term performance, compact installation and compatibility with a wide range of ABB modular accessories.
Typical Applications
- Industrial control panels.
- Railway and transportation electrical systems.
- Sensitive electronic control circuits.
- PLC and automation equipment.
- OEM machinery.
- Low-voltage electrical distribution boards.
Technical Specifications
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| Current | 8 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-Z8NAH10 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 8 A | |
| Tripping characteristic | Z | |
| Number of poles | 3P+N | |
| Protected poles | 3 | |
| Rated operational voltage | 440 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Rated short-circuit breaking capacity | 10 kA | |
| Frequency | 50 / 60 Hz | |
| Current limiting class | 3 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 70 × 69 mm | |
| Weight | approx. 0.50 kg |
Frequently Asked Questions
What is the ABB S203MT-Z8NAH10 used for?
It provides overload and short-circuit protection for sensitive electrical circuits in industrial, railway and automation applications.
What does the Z tripping characteristic provide?
The Z characteristic provides rapid magnetic tripping at relatively low fault currents, making it ideal for protecting sensitive electronic equipment and control systems.
What is the rated current of this circuit breaker?
The ABB S203MT-Z8NAH10 has a rated current of 8 A.
What is the breaking capacity?
This miniature circuit breaker provides a rated short-circuit breaking capacity of 10 kA.
Where is this miniature circuit breaker typically installed?
It is designed for DIN rail installation inside industrial control panels, distribution boards, OEM machinery and railway electrical systems.
Trusted by Electrical Professionals Worldwide
ABB S200MT miniature circuit breakers are trusted by panel builders, OEM manufacturers and industrial engineers for delivering dependable circuit protection, excellent reliability and long service life in demanding applications.
