Why Choose the ABB S203-K15 Miniature Circuit Breaker?
The ABB S203-K15 is a compact and reliable 3-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. Part of the ABB System pro M compact S200 range, it provides dependable modular protection for residential, commercial and industrial electrical installations.
With a K tripping characteristic, the S203-K15 is designed for circuits with higher inrush currents, helping reduce nuisance tripping while maintaining effective protection. This makes it suitable for selected inductive loads, transformers, motors and control circuits.
Rated at 15 A with a 3-pole configuration and 6 kA short-circuit breaking capacity, the ABB S203-K15 provides reliable protection for three-phase circuits in a compact DIN rail format. Its current-limiting design supports safe operation and helps reduce fault energy during short-circuit conditions.
Key Advantages
- 3-pole miniature circuit breaker for three-phase circuit protection.
- 15 A rated current suitable for power, control and auxiliary circuits.
- K curve tripping characteristic for circuits with higher inrush currents.
- 6 kA breaking capacity for dependable short-circuit protection.
- Part of the ABB System pro M compact S200 range.
- DIN rail mounting for efficient installation in panels and distribution boards.
Key Features
- ABB S203-K15 miniature circuit breaker.
- S200 series modular protection device.
- 3 protected poles.
- 15 A rated current.
- K characteristic trip curve.
- 6 kA rated short-circuit capacity.
- Thermal-magnetic tripping for overload and short-circuit protection.
- Compatible with ABB System pro M compact accessories.
Reliable Protection for Three-Phase Circuits
Miniature circuit breakers such as the ABB S203-K15 automatically disconnect electrical circuits when excessive current is detected. The delayed thermal tripping mechanism provides overload protection, while the electromechanical tripping mechanism responds rapidly to short-circuit faults.
The K curve characteristic is designed for applications where temporary inrush currents may occur during normal operation. This makes the S203-K15 a practical choice for selected motor circuits, transformers, inductive loads and automation equipment requiring reliable three-phase protection.
Typical Applications
- Three-phase distribution boards.
- Industrial control panels and switchboards.
- Motor and transformer circuit protection.
- Machine building and OEM equipment.
- Commercial and industrial electrical installations.
- Auxiliary power and automation circuits.
