Why Choose the ABB S303P-K6NA Miniature Circuit Breaker?
The ABB S303P-K6NA, product code 2CDS383103R0377, is a high-performance miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial electrical installations. As part of the proven ABB System pro M compact S300P series, it delivers outstanding reliability, high breaking capacity and long service life for demanding industrial environments.
Featuring a Type K tripping characteristic, the S303P-K6NA is specifically engineered for circuits with high inrush currents, making it ideal for protecting motors, transformers, solenoids and other inductive loads. Its thermal and magnetic trip mechanisms provide rapid fault clearance while reducing nuisance tripping during motor starting.
With a rated current of 6 A, a 3P+N configuration and a rated operational voltage of up to 415 V AC, the S303P-K6NA is suitable for industrial distribution boards, machine control panels and OEM equipment. The compact DIN rail mounting format simplifies installation and maintenance while remaining fully compatible with ABB System pro M compact accessories.
Key Advantages
- Reliable overload and short-circuit protection.
- 6 A rated current for industrial control and motor circuits.
- Type K tripping characteristic for inductive loads with high inrush currents.
- 3P+N configuration with switched neutral.
- 25 kA breaking capacity for demanding industrial applications.
- Fully compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- 6 A nominal current rating.
- Type K tripping characteristic.
- Three protected poles plus switched neutral.
- Rated operational voltage up to 415 V AC.
- Integrated trip indication for easy fault identification.
- DIN rail mounting for rapid installation.
- Manufactured in accordance with IEC and UL standards.
Reliable Protection for Industrial Motor Circuits
Miniature circuit breakers automatically disconnect electrical circuits when overloads or short circuits occur. The ABB S303P-K6NA combines thermal overload protection with rapid magnetic fault interruption, helping protect motors, machinery, wiring and connected electrical equipment from damage caused by excessive current.
Its Type K characteristic is designed specifically for motor and transformer circuits where higher starting currents are expected. This allows reliable operation while reducing unnecessary tripping during equipment start-up, making it an excellent choice for industrial automation and machine building.
Typical Applications
- Motor starter circuits.
- Industrial machinery and manufacturing equipment.
- Automation and control panels.
- Transformer and inductive load protection.
- Three-phase industrial distribution systems.
- OEM machine building applications.
