ABB S203MT-Z0.5H01 three-pole miniature circuit breaker with a 0.5 A rated current, Z curve tripping characteristic and 10 kA short-circuit breaking capacity for sensitive industrial and railway applications.
The ABB S203MT-Z0.5H01 is a specialist three-pole miniature circuit breaker (MCB) from the robust ABB System pro M compact S200MT series. It is specifically developed for traction, railway and demanding industrial applications where highly sensitive protection against short circuits is required while maintaining dependable overload protection.
Featuring a Z curve tripping characteristic and a 0.5 A rated current, the S203MT-Z0.5H01 is ideal for protecting sensitive electronic equipment, signalling circuits, PLC inputs, control systems and semiconductor devices. Its current-limiting design reduces fault energy, helping to protect both connected equipment and electrical wiring.
The ABB S203MT-Z0.5H01 is designed for standard DIN rail mounting inside electrical distribution boards, switchboards and industrial control panels. Its compact three-pole construction, robust performance and compatibility with ABB System pro M accessories make it an excellent choice for professional installations.
The ABB S203MT-Z0.5H01 combines thermal overload protection with instantaneous magnetic short-circuit protection. Its Z characteristic provides rapid operation at comparatively low fault currents, making it particularly suitable for protecting sensitive electronic equipment and semiconductor devices.
Designed for traction, railway and industrial applications, the S200MT range delivers dependable performance under demanding operating conditions while remaining fully compatible with ABB's System pro M accessory range.
| Current | 0.5 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200MT |
| Model | S203MT-Z0.5H01 |
| Product ID | 2CDO273006R0158 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 0.5 A |
| Number of poles | 3 |
| Tripping characteristic | Z |
| Rated operational voltage | 400 V AC |
| Frequency | 50 / 60 Hz |
| Rated short-circuit capacity | 10 kA |
| 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-Z0.5H01 protects sensitive three-phase electrical circuits against overloads and short circuits, particularly in railway, industrial and electronic applications.
A Z curve miniature circuit breaker provides very sensitive magnetic tripping, making it suitable for protecting electronic equipment and semiconductor devices.
The ABB S203MT-Z0.5H01 has a 0.5 A rated current.
This model is a three-pole (3P) miniature circuit breaker.
The device is designed for standard DIN rail mounting inside electrical distribution boards, switchboards and industrial control panels.
ABB System pro M compact miniature circuit breakers are trusted worldwide by electrical engineers, machine builders and railway specialists for reliable protection, compact installation and long service life.
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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...