Why Choose the ABB S203-K20 Miniature Circuit Breaker?
The ABB S203-K20 is a robust three-pole miniature circuit breaker (MCB) from the renowned ABB System pro M Compact S200 series. Designed to safeguard electrical installations against overloads and short circuits, it delivers dependable protection for commercial, industrial and OEM applications where reliability and safety are essential.
Featuring a K tripping characteristic, the S203-K20 is particularly well suited to protecting circuits with moderate to high inrush currents, such as motors, transformers, control equipment and inductive loads. Its advanced thermal and magnetic trip mechanisms ensure rapid fault clearance while helping to minimise nuisance tripping during normal operation.
With a 20 A rated current, three protected poles and a 6 kA breaking capacity, the ABB S203-K20 offers long service life, compact DIN rail installation and compatibility with ABB's comprehensive range of accessories for modern electrical distribution systems.
Key Advantages
- High quality three-pole miniature circuit breaker.
- 20 A rated current with K tripping characteristic.
- Ideal for protecting motors, transformers and inductive loads.
- 6 kA breaking capacity for reliable fault protection.
- Thermal overload and magnetic short circuit protection.
- Compatible with ABB System pro M Compact accessories.
Key Features
- ABB System pro M Compact S200 series.
- 20 A rated current.
- K tripping characteristic.
- Three-pole (3P) configuration.
- 6 kA rated short circuit breaking capacity.
- Current limiting design.
- DIN rail mounting.
- Failsafe bi-directional cylinder-lift screw terminals.
Reliable Protection for Industrial Electrical Systems
The ABB S203-K20 automatically disconnects electrical circuits during overload and short circuit conditions, helping to protect valuable equipment, minimise downtime and improve installation safety. Its K characteristic makes it an excellent choice for circuits supplying equipment with higher starting currents.
Built to meet recognised international standards, the S203-K20 offers excellent electrical endurance, long mechanical life and seamless integration into industrial control panels, switchboards and electrical distribution systems.
Typical Applications
- Motor control circuits.
- Industrial machinery.
- Automation control panels.
- Electrical distribution boards.
- Transformers and inductive loads.
- Commercial and industrial installations.
