ABB S203-Z63 three-pole 63 A Z curve miniature circuit breaker from the System pro M Compact S200 range for protecting sensitive electrical and electronic circuits against overloads and short circuits.
£216.04
The ABB S203-Z63 is a premium three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series. Designed to provide dependable protection against overloads and short circuits, it is ideally suited to industrial automation systems, control panels and sensitive electronic equipment where rapid fault protection is essential.
Featuring a Z tripping characteristic, the S203-Z63 is specifically engineered for applications requiring fast magnetic tripping, making it ideal for protecting PLCs, instrumentation, semiconductor equipment and other sensitive electronic circuits. Its advanced thermal and electromagnetic trip mechanisms provide dependable overload protection while ensuring rapid fault isolation.
With a 63 A rated current, three protected poles and a 6 kA breaking capacity, the ABB S203-Z63 offers compact DIN rail installation, excellent electrical endurance and full compatibility with ABB System pro M Compact accessories for commercial and industrial electrical installations.
The ABB S203-Z63 automatically disconnects electrical circuits when overload or short circuit conditions occur, helping to minimise equipment damage and improve system reliability. Its Z characteristic provides rapid magnetic tripping, making it particularly suitable for protecting sensitive electronic devices, PLCs and instrumentation systems.
Manufactured in accordance with IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077 standards, the S203-Z63 delivers dependable long-term performance, excellent electrical endurance and straightforward installation in commercial and industrial electrical systems.
| Current | 63 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200 |
| Model | S203-Z63 |
| Manufacturer Part Number | 2CDS253001R0608 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 63 A |
| Number of poles | 3P |
| Tripping characteristic | Z |
| Rated operational voltage | Up to 440 V AC |
| Rated frequency | 50 / 60 Hz |
| Rated short circuit breaking capacity | 6 kA |
| Protection rating | IP20 (IP40 when installed in an enclosure) |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Weight | Approx. 0.375 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203-Z63 protects three-phase electrical circuits against overloads and short circuits, particularly where sensitive electronic equipment requires rapid fault protection.
The Z characteristic provides fast magnetic tripping, making it ideal for PLCs, instrumentation, semiconductor equipment and other sensitive electronic devices.
The ABB S203-Z63 is a three-pole (3P) miniature circuit breaker.
This miniature circuit breaker has a 63 A rated current.
The breaker is designed for installation onto a standard DIN rail inside electrical distribution boards and industrial control panels.
ABB System pro M Compact miniature circuit breakers are trusted worldwide by panel builders, OEM manufacturers and electrical engineers for dependable circuit protection, outstanding reliability and long operational 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...