Why Choose the ABB S203-K8 Miniature Circuit Breaker?
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.
Key Advantages
- Three-pole miniature circuit breaker for three-phase electrical systems.
- 8 A rated current suitable for motor control and industrial applications.
- K tripping characteristic designed for inductive loads with high starting currents.
- Reliable overload and short circuit protection.
- Compact DIN rail mounting for quick installation.
- Compatible with ABB System pro M Compact accessories.
Key Features
- ABB System pro M Compact S200 series.
- Model: S203-K8.
- 8 A rated current.
- Three protected poles (3P).
- K curve tripping characteristic.
- Thermal and electromagnetic trip mechanisms.
- 6 kA breaking capacity to IEC/EN 60898-1.
- DIN rail mounting for switchboards and control panels.
Reliable Protection for Motor Control Applications
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.
Typical Applications
- Motor control circuits.
- Industrial machinery.
- Transformer protection.
- Industrial control panels.
- OEM equipment.
- Commercial and industrial electrical distribution.
