ABB S203-K8 three-pole miniature circuit breaker with an 8 A current rating and K tripping characteristic for motor control and industrial electrical protection.
£129.28
The ABB S203-K8 is a premium three-pole miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series. Featuring a 8 A current rating and a K tripping characteristic, it is specifically designed to provide reliable protection for motor control circuits, transformers, contactors and other inductive loads with elevated starting currents. It delivers dependable overload and short circuit protection across commercial, industrial and OEM electrical installations.
Manufactured to ABB's renowned engineering standards, the S203-K8 combines thermal overload protection with fast electromagnetic short circuit protection. Its compact DIN rail mounted design enables quick installation within switchboards, distribution boards and industrial control panels while providing excellent long-term reliability.
Complying with internationally recognised electrical standards, the ABB S203-K8 is an excellent choice for machine builders, electrical contractors and panel manufacturers seeking dependable protection for motor control applications and industrial automation systems.
The ABB S203-K8 is engineered to disconnect electrical circuits safely during overloads and short circuits while allowing the temporary high starting currents produced by motors, transformers and other inductive equipment. Its K characteristic reduces nuisance tripping during normal equipment start-up while maintaining dependable protection.
As part of ABB's proven System pro M Compact range, the S203-K8 offers excellent reliability, straightforward installation and compatibility with a comprehensive range of auxiliary contacts, shunt trips and signalling accessories for complete electrical distribution solutions.
| Current | 8 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M Compact S200 |
| Model | S203-K8 |
| Product ID | 2CDS253001R0407 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 8 A |
| Number of poles | 3 |
| Tripping characteristic | K |
| Rated operational voltage | 230/400 V AC |
| Rated insulation voltage | 440 V AC |
| Frequency | 50 / 60 Hz |
| Breaking capacity | 6 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
| Dimensions (H × W × D) | Approx. 88 × 52.5 × 69 mm |
| Weight | Approx. 0.38 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S203-K8 protects three-phase electrical circuits supplying motors, transformers and other inductive loads against overloads and short circuits.
The K curve is designed for circuits with high starting currents, making it ideal for motors, transformers, contactors and similar inductive equipment.
This model is a three-pole (3P) miniature circuit breaker designed for three-phase electrical systems.
The ABB S203-K8 clips directly onto a standard DIN rail within switchboards, distribution boards and industrial control panels.
The circuit breaker complies with IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077 standards for dependable overcurrent protection.
ABB System pro M Compact miniature circuit breakers are trusted worldwide by electrical engineers, machine builders and panel manufacturers for dependable circuit protection across demanding commercial and industrial 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...