Why Choose the ABB S203-K6NA Miniature Circuit Breaker?
The ABB S203-K6NA is a premium 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series, engineered to provide dependable overload and short circuit protection for industrial, commercial and OEM electrical installations. Featuring a K tripping characteristic, this breaker is specifically designed for circuits with elevated inrush currents, making it ideal for protecting motors, transformers, solenoids and other inductive equipment.
Built using ABB's advanced thermal and electromagnetic tripping technology, the S203-K6NA delivers reliable circuit protection with excellent current limiting performance. Its compact DIN rail mounted design enables straightforward installation within switchboards, distribution boards and industrial control panels while remaining fully compatible with ABB's extensive range of S200 accessories.
With a 6 A rated current, 3P+N configuration and a 6 kA breaking capacity, the ABB S203-K6NA provides dependable protection for three-phase electrical systems requiring a switched neutral, ensuring reliable operation in demanding industrial environments.
Key Advantages
- 3P+N miniature circuit breaker for three-phase systems with switched neutral.
- 6 A rated current for industrial protection applications.
- K characteristic trip curve for higher inrush current loads.
- 6 kA breaking capacity for dependable short circuit protection.
- Compact DIN rail mounting for straightforward installation.
- Compatible with ABB S200 series accessories for enhanced flexibility.
Key Features
- ABB System pro M Compact S200 series.
- Model: S203-K6NA.
- Rated current: 6 A.
- 3P+N pole configuration.
- K tripping characteristic.
- 6 kA rated short circuit capacity.
- Thermal overload and electromagnetic short circuit protection.
- Current limiting design.
- DIN rail mounting.
Reliable Protection for Industrial Power Systems
The ABB S203-K6NA automatically disconnects electrical circuits during overload and short circuit conditions, helping protect wiring, machinery and connected equipment from damage while maintaining electrical safety and operational reliability.
Its K characteristic provides a higher magnetic trip threshold than standard B and C curve devices, making it particularly suitable for motors, transformers, magnetic coils and other inductive equipment with elevated starting currents.
Typical Applications
- Industrial motor circuits.
- Machine building and OEM equipment.
- Industrial control panels.
- Transformer protection.
- Automation systems.
- Commercial and industrial power distribution.
