Why Choose the ABB S203M-K0.5 Miniature Circuit Breaker?
The ABB S203M-K0.5 is a high-performance miniature circuit breaker (MCB) from the ABB System pro M compact S200M range, designed to provide dependable overload and short-circuit protection in residential, commercial and industrial electrical installations. Featuring a 3-pole configuration, K curve tripping characteristic and a 0.5 A rated current, it is suitable for low-current circuits with higher inrush characteristics.
The S200M range uses current-limiting technology with a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short-circuit protection. This helps protect wiring, equipment and electrical systems from damaging fault currents.
With its compact DIN rail mounting format and robust ABB construction, the S203M-K0.5 is ideal for distribution boards, control panels and switchgear assemblies where reliable three-pole circuit protection is required.
Key Advantages
- Reliable miniature circuit breaker for overload and short-circuit protection.
- 3-pole configuration for three-phase circuit protection.
- 0.5 A rated current for low-current control and auxiliary circuits.
- K curve characteristic suitable for higher inrush current applications.
- Part of the ABB System pro M compact S200M range.
- DIN rail mounting for fast installation in electrical panels.
Key Features
- ABB S200M miniature circuit breaker series.
- 3-pole MCB configuration.
- K curve tripping characteristic.
- 0.5 A rated current.
- Current-limiting Class 3 design.
- Thermal overload and electromechanical short-circuit protection.
- Compatible with ABB System pro M compact accessories.
- Suitable for DIN rail installation in distribution boards and control panels.
Reliable Protection for Three-Phase Circuits
Miniature circuit breakers such as the ABB S203M-K0.5 automatically disconnect electrical circuits when overload or short-circuit conditions occur. This helps protect cables, connected devices and panel equipment from excessive current and potential damage.
Its K curve characteristic makes it suitable for circuits with elevated inrush currents, including control transformers, motors, solenoids and selected inductive loads. The 3-pole design allows simultaneous protection and switching across three conductors in three-phase installations.
Typical Applications
- Three-phase control circuits.
- Industrial distribution boards.
- Machine building and automation panels.
- Transformer and inductive load protection.
- Commercial and industrial switchgear assemblies.
- Electrical installations requiring compact DIN rail protection.
