ABB S203MT-Z1H10 miniature circuit breaker from the S200MT series, a three-pole 1 A Z-curve MCB designed for reliable overload and short-circuit protection in industrial, traction and control panel applications.
The ABB S203MT-Z1H10 is a specialist three-pole miniature circuit breaker from the ABB System pro M compact S200MT series, designed for dependable circuit protection in demanding industrial, traction and railway-related electrical applications. With a 1 A rated current and Z-curve tripping characteristic, it is suitable for sensitive circuits that require fast response to short-circuit conditions.
The S200MT range is engineered for robust performance in environments where compact installation, reliable operation and high-quality protection are essential. Its current-limiting design helps reduce fault energy, while separate thermal and electromechanical tripping mechanisms provide protection against overloads and short circuits.
With a three-pole configuration, DIN rail mounting and compact modular construction, the S203MT-Z1H10 is well suited for traction equipment, control panels, automation systems and specialist low-current three-phase circuits.
Miniature circuit breakers such as the ABB S203MT-Z1H10 help protect electrical circuits by automatically disconnecting the supply during overload or short-circuit conditions. The Z-curve characteristic provides a fast magnetic response, making it suitable for sensitive circuits where rapid fault disconnection is important.
The S200MT series is particularly suited to demanding installations where compact DIN rail mounting, dependable tripping performance and robust ABB construction are required. It can be integrated into traction systems, control panels and industrial electrical assemblies alongside other modular low voltage devices.
| Current | 1 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200MT |
| Model | S203MT-Z1H10 |
| Product ID | 2CDV273006R0218 |
| Product type | Miniature circuit breaker |
| Number of poles | 3P |
| Rated current | 1 A |
| Tripping characteristic | Z curve |
| Rated voltage | 400 V AC |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Terminal type | Screw terminal |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Weight | approx. 0.375 kg |
The ABB S203MT-Z1H10 is used to protect low-current three-phase electrical circuits against overloads and short circuits in industrial, traction and control panel applications.
The S203MT-Z1H10 has a rated current of 1 A.
The Z-curve characteristic provides fast magnetic tripping for sensitive circuits where rapid disconnection during short-circuit conditions is required.
The ABB S203MT-Z1H10 is a three-pole miniature circuit breaker for three-phase circuit protection.
The breaker is designed for standard DIN rail mounting inside electrical panels, control cabinets and distribution boards.
ABB S200MT miniature circuit breakers are trusted by panel builders, rail engineers, OEMs and industrial electrical professionals for dependable low voltage circuit protection in demanding 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...