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ABB S203MT-Z10 MCB – S200M – 3P – Z – 10A
ABB S203MT-Z10 miniature circuit breaker, a 3-pole Z curve 10 A MCB from the S200MT range designed for sensitive circuit protection in traction, railway and industrial control applications.
£136.54
Why Choose the ABB S203MT-Z10 Miniature Circuit Breaker?
The ABB S203MT-Z10 is a compact and dependable 3-pole miniature circuit breaker (MCB) designed to provide fast overload and short-circuit protection for sensitive electrical circuits. As part of the specialist ABB S200MT miniature circuit breaker range, it is engineered for demanding traction, railway and industrial control environments where reliable circuit protection and consistent performance are essential.
This miniature circuit breaker combines thermal overload protection with an electromagnetic short-circuit trip mechanism. The Z characteristic provides rapid tripping at comparatively low fault current levels, making it suitable for sensitive electronic equipment, signalling circuits, control systems and applications where fast disconnection helps protect connected components.
With a rated current of 10 A, a 3-pole configuration and a rated short-circuit breaking capacity of 10 kA, the S203MT-Z10 is well suited to three-phase auxiliary, control and protection circuits used in industrial and transport-related installations. Its modular DIN rail design allows straightforward installation inside electrical cabinets and distribution boards.
Key Advantages
- Compact 3-pole miniature circuit breaker for traction and railway applications.
- 10 A rated current for reliable circuit protection.
- Z curve tripping characteristic for rapid response to low fault currents.
- 10 kA breaking capacity for dependable short-circuit protection.
- Current limiting class 3 performance helps protect downstream equipment.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB S200MT miniature circuit breaker series.
- 3-pole MCB configuration.
- 10 A rated current.
- Z characteristic tripping curve.
- 10 kA rated short-circuit breaking capacity.
- Thermal and electromagnetic protection mechanisms.
- Designed for demanding traction and railway applications.
- DIN rail mounting for control panels and distribution boards.
Reliable Protection for Sensitive Electrical Systems
Miniature circuit breakers such as the ABB S203MT-Z10 protect electrical circuits by automatically disconnecting the supply during overload or short-circuit conditions. This helps reduce the risk of cable damage, component failure and unsafe operating conditions in sensitive control and auxiliary circuits.
The Z curve characteristic is particularly suited to applications where fast operation is required at comparatively low fault current levels. Combined with ABB’s S200MT traction-focused construction, the S203MT-Z10 provides reliable protection for control, signalling and electronic circuits used in transport and industrial automation systems.
Typical Applications
- Railway and traction electrical systems.
- Rolling stock control panels.
- Electronic control circuits.
- Three-phase auxiliary circuits.
- Industrial automation cabinets.
- Signalling, monitoring and protection systems.
Technical Specifications
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| Current | 10 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | Z curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | S200MT | |
| Model | S203MT-Z10 | |
| Product type | Miniature circuit breaker | |
| Number of poles | 3P | |
| Rated current | 10 A | |
| Tripping characteristic | Z curve | |
| Rated voltage | 440 V AC | |
| Frequency | 50 / 60 Hz | |
| Rated breaking capacity | 10 kA | |
| Rated impulse withstand voltage | 4 kV | |
| Current limiting class | 3 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail mounting | |
| Built-in depth | approx. 69 mm | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S203MT-Z10 used for?
The ABB S203MT-Z10 is used to protect sensitive three-phase circuits from overloads and short circuits, particularly in traction, railway and industrial control applications.
What is the rated current of this MCB?
The S203MT-Z10 has a rated current of 10 A.
How many poles does the S203MT-Z10 have?
This miniature circuit breaker has a 3-pole configuration.
What does the Z curve mean?
The Z curve tripping characteristic provides rapid operation at low fault currents, making it suitable for sensitive electronic, control and signalling circuits.
What is the breaking capacity of the S203MT-Z10?
The S203MT-Z10 has a rated short-circuit breaking capacity of 10 kA.
Trusted by Engineers Worldwide
ABB S200MT miniature circuit breakers are trusted by electrical engineers, panel builders and transport specialists to provide reliable protection for sensitive control, signalling and auxiliary circuits in demanding traction and industrial environments.
