ABB S203M-Z63NA three-pole 63 A Z curve miniature circuit breaker from the System pro M Compact S200M range for industrial and commercial circuit protection.
£247.02
The ABB S203M-Z63NA is a high performance three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200M series. Designed to provide dependable overload and short circuit protection, it is suitable for industrial, commercial and specialist electrical installations requiring a Z characteristic trip curve for highly sensitive loads.
The S200M range combines excellent protection with compact dimensions, making it ideal for modern distribution boards and control panels. Featuring thermal and magnetic tripping mechanisms, the S203M-Z63NA delivers reliable circuit protection while helping maximise system uptime and equipment safety.
With a 63 A rated current, three protected poles and a 10 kA breaking capacity, this miniature circuit breaker is engineered for demanding applications where precise protection of electronic equipment and specialised circuits is essential.
The ABB S203M-Z63NA protects electrical installations against overloads and short circuits using independent thermal and magnetic tripping mechanisms. Its fast acting Z characteristic makes it particularly suitable for protecting sensitive electronic equipment with low inrush current tolerance.
Designed for industrial and commercial electrical systems, the S200M range offers long mechanical life, high reliability and compatibility with ABB accessories, helping engineers build flexible and dependable control panels and distribution systems.
| Current | 63 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200M |
| Model | S203M-Z63NA |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 63 A |
| Number of poles | 3 |
| Trip characteristic | Z |
| Rated operational voltage | Up to 440 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 10 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
| Dimensions (H × W × D) | approx. 88 × 52.5 × 69 mm |
| Weight | approx. 0.38 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It provides overload and short circuit protection for three-phase electrical circuits in industrial, commercial and automation applications.
The Z curve provides rapid magnetic tripping at low multiples of rated current, making it suitable for protecting sensitive electronic equipment.
The ABB S203M-Z63NA has a rated current of 63 A.
The device is designed for quick installation onto standard DIN mounting rails within electrical enclosures and distribution boards.
It complies with IEC/EN 60898-1 and IEC/EN 60947-2 for reliable circuit protection.
ABB System pro M Compact miniature circuit breakers are trusted by panel builders, machine manufacturers and electrical contractors for delivering dependable circuit protection across demanding industrial and commercial applications.
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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...