Why Choose the ABB S203-K2NA Miniature Circuit Breaker?
The ABB S203-K2NA is a premium 3P+N miniature circuit breaker (MCB) from the trusted ABB System pro M Compact S200 series, designed to provide reliable overload and short circuit protection for industrial, commercial and OEM electrical installations. Featuring a K tripping characteristic, this breaker is specifically engineered for circuits with higher inrush currents, making it ideal for motors, transformers, solenoids and other inductive loads.
Manufactured using ABB's advanced thermal and electromagnetic tripping technology, the S203-K2NA delivers dependable circuit protection while providing excellent current limiting performance. Its compact DIN rail mounted design enables quick installation within switchboards, control panels and distribution systems, while compatibility with ABB S200 accessories provides additional flexibility for future expansion.
With a 2 A rated current, 3P+N configuration and a 6 kA breaking capacity, the ABB S203-K2NA offers dependable protection for three-phase electrical systems requiring a switched neutral, ensuring safe and reliable operation in demanding industrial environments.
Key Advantages
- 3P+N miniature circuit breaker for three-phase systems with switched neutral.
- 2 A rated current for specialised low-current applications.
- K characteristic trip curve for higher inrush current loads.
- 6 kA breaking capacity for dependable fault interruption.
- Compact DIN rail mounting for straightforward installation.
- Compatible with ABB S200 series accessories.
Key Features
- ABB System pro M Compact S200 series.
- Model: S203-K2NA.
- Rated current: 2 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-K2NA 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 circuits supplying motors, transformers 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.
