Why Choose the ABB S203M-K6NA Miniature Circuit Breaker?
The ABB S203M-K6NA is a professional miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection for commercial, industrial and control panel applications. As part of the trusted ABB System pro M compact S200M series, it delivers dependable current-limiting protection for modern electrical installations.
This miniature circuit breaker features a K curve tripping characteristic, making it suitable for circuits with higher inrush currents than standard B or C curve devices. It is commonly used for inductive loads, control circuits, transformers and machinery where nuisance tripping must be reduced while maintaining reliable fault protection.
With a rated current of 6 A, a 3+NP pole configuration and a breaking capacity of up to 10 kA at 230 / 400 V AC, the S203M-K6NA is ideal for specialised three-phase circuit protection applications requiring neutral switching. Its compact DIN rail format supports fast installation in modular electrical enclosures.
Key Advantages
- Reliable ABB miniature circuit breaker for professional circuit protection.
- 6 A rated current for low-current three-phase circuits.
- K curve tripping characteristic for inductive loads and higher inrush current applications.
- 3+NP configuration for three-phase systems requiring neutral switching.
- Current-limiting design helps protect cables and connected equipment.
- DIN rail mounting for fast installation in control panels and distribution boards.
Key Features
- ABB System pro M compact S200M series.
- 6 A rated current.
- K curve tripping characteristic.
- 3+NP pole configuration.
- Up to 10 kA breaking capacity at 230 / 400 V AC.
- Delayed thermal tripping mechanism for overload protection.
- Electromechanical tripping mechanism for short-circuit protection.
- Compact modular design for DIN rail mounting.
Reliable Protection for Inductive Electrical Loads
Miniature circuit breakers such as the ABB S203M-K6NA automatically disconnect electrical circuits during overload or short-circuit conditions. This helps protect cables, equipment and connected loads while supporting safe and compliant electrical installation design.
The ABB S200M range is engineered for professional installations requiring compact dimensions, dependable performance and high breaking capacity. The K curve characteristic makes this model particularly suitable for transformers, motors, control circuits and other equipment with elevated starting currents.
Typical Applications
- Industrial control panels.
- Transformer and inductive load protection.
- Motor control circuits.
- Machine building and OEM electrical systems.
- Commercial distribution boards.
- Automation and process control equipment.
