Why Choose the ABB S203-K40 Miniature Circuit Breaker?
The ABB S203-K40 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 for industrial machinery, motor control circuits and commercial electrical installations where higher inrush currents are present.
Featuring a K tripping characteristic, the S203-K40 is specifically engineered for applications involving motors, transformers, contactors and other inductive loads. Its advanced thermal and electromagnetic trip mechanisms provide reliable overload protection while allowing higher starting currents without nuisance tripping.
With a 40 A rated current, three protected poles and a 6 kA breaking capacity, the ABB S203-K40 delivers dependable circuit protection, compact DIN rail installation and compatibility with ABB's comprehensive range of System pro M Compact accessories.
Key Advantages
- Premium three-pole miniature circuit breaker.
- 40 A rated current with K tripping characteristic.
- Designed for motors, transformers and inductive loads.
- 6 kA rated breaking capacity.
- Thermal overload and magnetic short circuit protection.
- Compatible with ABB System pro M Compact accessories.
Key Features
- ABB System pro M Compact S200 series.
- 40 A rated current.
- K tripping characteristic.
- Three-pole (3P) configuration.
- 6 kA rated short circuit breaking capacity.
- Current limiting construction.
- DIN rail mounting.
- Failsafe bi-directional cylinder-lift screw terminals.
Reliable Protection for High Inrush Current Circuits
The ABB S203-K40 automatically disconnects electrical circuits during overload and short circuit conditions, helping to protect valuable equipment, minimise downtime and improve electrical safety. Its K characteristic makes it particularly suitable for applications where temporary high starting currents are expected.
Manufactured in accordance with IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077 standards, the S203-K40 delivers long mechanical life, excellent electrical endurance and dependable performance in demanding industrial and commercial installations.
Typical Applications
- Motor control circuits.
- Industrial machinery.
- Transformers.
- Automation control panels.
- Commercial and industrial distribution boards.
- OEM electrical equipment.
