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ABB S203MT-Z8H01 MCB – S200M – 3P – Z – 8A
ABB S203MT-Z8H01 three pole 8A Z characteristic miniature circuit breaker designed for railway, traction and industrial electrical protection with 10 kA short circuit capacity.
Why Choose the ABB S203MT-Z8H01 Miniature Circuit Breaker?
The ABB S203MT-Z8H01 is a high performance 3-pole miniature circuit breaker (MCB) engineered for reliable overload and short circuit protection in railway, traction and industrial electrical systems. As part of the proven ABB S200MT miniature circuit breaker series, it is specifically designed for demanding environments where dependable circuit protection and long-term reliability are essential.
Featuring a Z characteristic tripping curve, the S203MT-Z8H01 is ideal for protecting sensitive electronic equipment, signalling systems, instrumentation and control circuits. Its rapid magnetic tripping characteristic enables fast disconnection under relatively low fault current conditions, helping to safeguard valuable equipment from damage.
With an 8 A rated current, 3-pole configuration and 10 kA breaking capacity, the ABB S203MT-Z8H01 is ideally suited to railway rolling stock, industrial control panels, automation systems and OEM machinery requiring dependable three-phase circuit protection.
Key Advantages
- Designed for railway, traction and industrial electrical applications.
- 3-pole miniature circuit breaker for three-phase protection.
- 8 A rated current for low-current distribution and control circuits.
- Z characteristic tripping curve for rapid protection of sensitive electrical equipment.
- 10 kA short circuit breaking capacity.
- Compact DIN rail design for straightforward installation and maintenance.
Key Features
- ABB S200MT series.
- Model: S203MT-Z8H01.
- Rated current: 8 A.
- Z characteristic tripping curve.
- 3 protected poles (3P).
- 10 kA rated short circuit capacity.
- Thermal overload and magnetic short circuit protection.
- DIN rail mounting with compatibility across ABB accessory ranges.
Fast Acting Protection for Sensitive Electrical Systems
Miniature circuit breakers such as the ABB S203MT-Z8H01 combine thermal overload protection with rapid electromagnetic short circuit protection to safeguard electrical installations from damaging fault conditions. The Z characteristic provides fast response where sensitive electronic equipment requires enhanced protection against relatively low fault currents.
Its compact modular construction enables quick installation on standard DIN rails whilst maintaining compatibility with ABB accessories, making it an ideal solution for railway electrical systems, industrial automation and modern control panels.
Typical Applications
- Railway and rolling stock electrical systems.
- Industrial control panels.
- Electronic control equipment.
- Instrumentation and signalling circuits.
- OEM machinery.
- Automation and process control systems.
Technical Specifications
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| Current | 8 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S203MT-Z8H01 | |
| Alternative model | S203MT-Z8 | |
| Product type | Miniature Circuit Breaker (MCB) | |
| Rated current | 8 A | |
| Tripping characteristic | Z | |
| Number of poles | 3 | |
| Rated operational voltage | Up to 400 V AC | |
| Rated insulation voltage | 440 V | |
| Frequency | 50 / 60 Hz | |
| Rated short circuit capacity | 10 kA | |
| Product ID | 2CDS273006R0408 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm | |
| Weight | approx. 0.375 kg |
Frequently Asked Questions
What is the ABB S203MT-Z8H01 used for?
It protects three-phase electrical circuits against overloads and short circuits in railway, industrial and automation applications.
What is the rated current of this circuit breaker?
The ABB S203MT-Z8H01 has an 8 A rated current.
What does the Z tripping characteristic mean?
The Z characteristic provides rapid magnetic tripping at relatively low fault current levels, making it suitable for protecting sensitive electronic equipment and control circuits.
How many poles does this MCB have?
This model features a 3-pole (3P) configuration for three-phase electrical protection.
How is the ABB S203MT-Z8H01 installed?
The circuit breaker is designed for installation on a standard DIN rail inside electrical distribution boards and industrial control panels.
Trusted by Railway and Industrial Engineers Worldwide
ABB S200MT miniature circuit breakers are trusted by OEMs, panel builders and railway engineers for delivering dependable electrical protection in demanding transportation and industrial environments.
