Why Choose the ABB S303P-K0.2NA Miniature Circuit Breaker?
The ABB S303P-K0.2NA (2CDS383103R0087) is a premium three-phase plus switched neutral (3P+N) miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in specialised industrial control and automation systems. As part of the robust ABB S300P series, it combines exceptional fault-breaking performance with reliable operation for sensitive low-current applications.
The S303P-K0.2NA incorporates three protected phase poles with one switched neutral pole, allowing simultaneous isolation of all conductors while providing thermal and magnetic protection to the phase conductors. Its compact DIN rail design, fail-safe cylinder-lift screw terminals and top or bottom supply connections ensure straightforward installation and long-term reliability.
With a rated current of 0.2 A, a Type K tripping characteristic and a rated short-circuit breaking capacity of 25 kA, the S303P-K0.2NA is ideal for protecting highly sensitive industrial control circuits, instrumentation, signalling equipment and specialised automation systems requiring switched neutral isolation.
Key Advantages
- Industrial-grade 3P+N miniature circuit breaker.
- 0.2 A rated current for sensitive low-current circuits.
- Type K tripping characteristic for specialised industrial applications.
- 25 kA short-circuit breaking capacity.
- Switched neutral enables simultaneous isolation of all conductors.
- Compact DIN rail mounting with fail-safe terminals.
Key Features
- ABB S300P series.
- 3 protected poles + switched neutral (3P+N).
- 0.2 A rated current.
- Type K tripping characteristic.
- Rated operating voltage: 415 V AC.
- Maximum operating voltage: 125 V DC.
- 25 kA rated breaking capacity (Icn).
- 100 kA ultimate breaking capacity (Icu) according to IEC 60947-2.
- Rated insulation voltage: 500 V.
- Rated impulse withstand voltage: 6 kV.
Reliable Protection for Sensitive Industrial Circuits
The ABB S303P-K0.2NA automatically disconnects electrical circuits during overload or short-circuit conditions, protecting sensitive control equipment, signalling systems and connected devices while helping minimise downtime and maintenance costs.
Its Type K tripping characteristic is intended for specialised industrial loads with higher magnetic trip thresholds than Type C devices, making it suitable for selected control, automation and OEM applications requiring switched neutral isolation.
Typical Applications
- Industrial automation systems.
- Instrumentation circuits.
- Control panels.
- Signalling equipment.
- OEM machinery.
- Low-current three-phase industrial installations.
