Why Choose the ABB S303P-K4 Miniature Circuit Breaker?
The ABB S303P-K4 (2CDS383001R0337) is a high-performance three-pole miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in demanding industrial electrical installations. As part of the trusted ABB S300P series, it is designed for applications requiring exceptional breaking capacity and reliable circuit protection.
Manufactured to international IEC and UL standards, the S303P-K4 delivers outstanding electrical performance while ensuring maximum safety for switchgear assemblies, industrial control panels and power distribution systems. Its robust construction, compact DIN rail design and clear contact position indication simplify installation and maintenance.
With a 4 A current rating, K tripping characteristic and a 100 kA ultimate short-circuit breaking capacity (IEC 60947-2), this miniature circuit breaker is ideally suited to industrial machinery, motor circuits and installations with high inrush currents.
Key Advantages
- Industrial-grade three-pole miniature circuit breaker.
- 4 A rated current with K-curve tripping characteristics.
- Protects electrical installations against overload and short circuits.
- 100 kA ultimate breaking capacity for demanding industrial applications.
- DIN rail mounting for quick and simple installation.
- Manufactured to recognised IEC and UL standards.
Key Features
- ABB S300P series.
- 3-pole configuration.
- 4 A current rating.
- K tripping characteristic for higher inrush current applications.
- Rated operating voltage up to 415 V AC.
- Contact position indicator with red ON / green OFF status.
- Failsafe bi-directional screw terminals.
- DIN rail mounting with compatibility across the ABB System pro M Compact accessory range.
Reliable Protection for Industrial Electrical Systems
The ABB S303P-K4 miniature circuit breaker is designed to disconnect electrical circuits automatically when overload or short-circuit conditions occur. This helps protect electrical equipment, minimise downtime and improve the overall safety and reliability of industrial power distribution systems.
Its K tripping characteristic makes it particularly suitable for circuits with higher starting currents, including motors, transformers and inductive loads commonly found in industrial automation and manufacturing facilities.
Typical Applications
- Industrial control panels.
- Motor protection circuits.
- Machine building and OEM equipment.
- Power distribution boards.
- Manufacturing and processing plants.
- Industrial automation systems.
