Why Choose the ABB S203M-K25 Miniature Circuit Breaker?
The ABB S203M-K25 is a reliable three-pole miniature circuit breaker (MCB) designed to provide high quality protection against overloads and short circuits in industrial, commercial and residential electrical installations. As part of the ABB S200M System pro M compact series, it delivers dependable circuit protection in a compact DIN rail mounted format.
This MCB features a K tripping characteristic, making it well suited to circuits with higher inrush currents such as motors, transformers, inductive loads and industrial control equipment. Its current limiting design helps reduce fault energy, protecting connected cables, devices and switchgear during fault conditions.
With a 25 A rated current, three-pole configuration and 10 kA breaking capacity, the ABB S203M-K25 is ideal for three-phase electrical distribution, machinery panels and automation systems where robust protection and reliable operation are required.
Key Advantages
- Compact three-pole miniature circuit breaker for professional electrical installations.
- 25 A rated current for reliable circuit protection.
- K tripping characteristic suitable for inductive loads and motor circuits.
- 10 kA short-circuit breaking capacity for demanding applications.
- Current limiting design helps reduce thermal and mechanical stress during faults.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB S200M miniature circuit breaker series.
- 25 A rated current.
- Three-pole (3P) configuration.
- K characteristic thermal and magnetic tripping curve.
- 10 kA breaking capacity at 230 / 400 V AC.
- DIN rail mounting for fast panel installation.
- Delayed thermal tripping mechanism for overload protection.
- Electromechanical tripping mechanism for short circuit protection.
Reliable Circuit Protection for Three-Phase Installations
Miniature circuit breakers such as the ABB S203M-K25 automatically disconnect the electrical supply when overload or short circuit conditions occur. This helps protect wiring, machinery and connected electrical equipment from damage caused by excessive current.
The K curve makes this breaker especially useful in installations where equipment may draw higher starting currents during normal operation. This helps reduce unwanted tripping while maintaining dependable protection during genuine fault conditions.
Typical Applications
- Three-phase industrial distribution boards.
- Motor control circuits and machinery panels.
- Transformer and inductive load protection.
- Automation and control cabinets.
- Commercial electrical installations.
- Panel building and OEM electrical equipment.
