ABB S203MT-K8H10 three-pole miniature circuit breaker with 8 A rated current and K curve tripping characteristic for reliable overload and short-circuit protection in industrial and railway applications.
The ABB S203MT-K8H10 is a specialist three-pole miniature circuit breaker from the ABB System pro M compact S200MT series, designed for reliable circuit protection in demanding industrial, traction and railway applications. With an 8 A rated current and a K-curve tripping characteristic, it is suitable for circuits with elevated inrush currents, including control transformers, inductive loads and specialist automation equipment.
The S200MT range is engineered for robust protection where compact installation, consistent tripping performance and reliable overcurrent protection are required. Its current-limiting design helps reduce fault energy, while separate thermal and electromechanical tripping mechanisms provide effective protection against overloads and short circuits.
With a three-pole configuration, compact modular construction and DIN rail mounting, the S203MT-K8H10 is well suited for control panels, rolling stock systems, industrial machinery and electrical distribution assemblies requiring reliable three-phase protection.
The ABB S203MT-K8H10 automatically disconnects electrical circuits during overload or short-circuit conditions, helping protect wiring, control equipment and connected devices. Its K-curve characteristic provides reliable protection for circuits with higher starting currents while helping to avoid unnecessary nuisance tripping.
Designed for traction and railway installations, the S200MT range also delivers dependable protection in industrial automation, OEM machinery and commercial electrical systems where compact, high-performance protection devices are required.
| Current | 8 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200MT |
| Model | S203MT-K8H10 |
| Product ID | 2CDV273006R0417 |
| Product type | Miniature circuit breaker |
| Number of poles | 3P |
| Rated current | 8 A |
| Tripping characteristic | K curve |
| Rated operational voltage | 230 / 400 V AC |
| Maximum rated voltage | 440 V AC |
| Rated short-circuit capacity | 10 kA |
| Frequency | 50 / 60 Hz |
| Energy limiting class | 3 |
| Mounting type | DIN rail |
| Terminal type | Screw terminals |
| Protection rating | IP20 |
| Application | Three-phase circuit protection |
The ABB S203MT-K8H10 protects three-phase electrical circuits against overloads and short circuits in industrial, railway and traction applications.
The circuit breaker has a rated current of 8 A.
The K-curve characteristic is suitable for circuits with higher inrush currents, including control transformers, inductive equipment and selected machinery circuits.
The ABB S203MT-K8H10 is a three-pole miniature circuit breaker for three-phase circuit protection.
The breaker is designed for installation onto a standard 35 mm DIN rail inside electrical panels, switchboards and control cabinets.
ABB S200MT miniature circuit breakers are trusted by railway engineers, panel builders and industrial 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...