ABB S203MT-Z25H10 miniature circuit breaker featuring 3 poles, 25 A rated current, Z curve tripping characteristic and 10 kA breaking capacity for industrial, railway and commercial electrical protection.
The ABB S203MT-Z25H10 is a high-performance miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in demanding electrical installations. As part of the ABB S200MT miniature circuit breaker range, this 3-pole device is specifically developed for railway, industrial and commercial applications where reliable circuit protection is essential.
With a 25 A rated current and a Z-type tripping characteristic, the S203MT-Z25H10 offers highly sensitive magnetic tripping, making it ideal for protecting control circuits, signalling equipment and other sensitive electrical loads that require rapid fault disconnection.
Featuring a compact DIN rail mounting design, 10 kA breaking capacity and current-limiting technology, the ABB S203MT-Z25H10 helps minimise fault energy while protecting downstream equipment. It is fully compatible with ABB System pro M compact accessories for flexible panel design.
Miniature circuit breakers such as the ABB S203MT-Z25H10 automatically disconnect electrical circuits during overload or short-circuit conditions. This protects wiring, connected equipment and electrical systems while helping reduce maintenance costs and downtime.
The Z curve characteristic is designed for applications requiring highly sensitive magnetic tripping, making this circuit breaker suitable for control, signalling and specialist electrical systems. Its robust construction ensures dependable performance in demanding industrial and railway environments.
| Current | 25 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S200MT |
| Model | S203MT-Z25H10 |
| MPN | 2CDV273006R0518 |
| Product type | Miniature circuit breaker |
| Number of poles | 3P |
| Rated current | 25 A |
| Tripping characteristic | Z curve |
| Rated short-circuit capacity | 10 kA |
| Rated operational voltage | Up to 440 V AC |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Rated frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail mounting |
| Dimensions (H × W × D) | Approx. 88 × 52.5 × 69 mm |
| Weight | Approx. 0.375 kg |
The ABB S203MT-Z25H10 protects three-phase electrical circuits against overloads and short circuits in industrial, commercial and railway applications.
This miniature circuit breaker has a rated current of 25 A.
The Z curve provides highly sensitive magnetic tripping, making it suitable for control circuits and applications requiring rapid fault disconnection.
The ABB S203MT-Z25H10 is a 3-pole miniature circuit breaker.
It is designed for DIN rail mounting inside electrical cabinets, control panels and distribution boards.
ABB S200MT miniature circuit breakers are trusted by electrical engineers, panel builders and machine manufacturers for delivering reliable circuit protection in demanding industrial, railway and commercial environments.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...