Why Choose the ABB S303P-K8 Miniature Circuit Breaker?
The ABB S303P-K8 (2CDS383001R0407) is a premium three-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial electrical installations. As part of the robust ABB S300P series, it delivers exceptional reliability, high breaking capacity and long service life for demanding applications.
Engineered to meet recognised IEC and UL standards, the S303P-K8 combines outstanding electrical performance with a compact DIN rail design for easy integration into industrial control panels, switchgear assemblies and power distribution systems. Its fail-safe terminals and dual supply capability allow fast, flexible installation while maintaining secure electrical connections.
With a rated current of 8 A, a Type K tripping characteristic and a 25 kA rated short-circuit breaking capacity, the S303P-K8 is ideally suited to protecting three-phase motor circuits, transformers and other inductive loads with elevated inrush currents.
Key Advantages
- Industrial-grade three-pole miniature circuit breaker.
- 8 A rated current with Type K tripping characteristics.
- Reliable overload and short-circuit protection.
- 25 kA rated breaking capacity for demanding industrial installations.
- Suitable for motor circuits and inductive loads.
- Compact DIN rail mounting for straightforward installation.
Key Features
- ABB S300P series.
- 3-pole configuration.
- 8 A rated current.
- Type K tripping characteristic.
- Rated operating voltage up to 415 V AC.
- 25 kA rated breaking capacity.
- Ultimate short-circuit breaking capacity up to 100 kA.
- Red ON / green OFF contact position indicator.
- Failsafe screw terminals with top or bottom supply connection.
- DIN rail mounting compatible with ABB System pro M Compact accessories.
Reliable Protection for Industrial Electrical Systems
The ABB S303P-K8 automatically disconnects electrical circuits during overload or short-circuit conditions, helping protect cables, motors and connected equipment while improving system reliability and reducing unplanned downtime.
Its Type K tripping characteristic is specifically designed for circuits with higher starting currents, making it an excellent choice for industrial motors, transformers, solenoids and other inductive electrical loads.
Typical Applications
- Industrial motor protection.
- Machine building and OEM equipment.
- Industrial control panels.
- Power distribution systems.
- Transformers and inductive loads.
- Manufacturing and automation facilities.
