Why Choose the ABB S303P-K63 Miniature Circuit Breaker?
The ABB S303P-K63 (2CDS383001R0607) is a premium three-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in demanding industrial electrical installations. As part of the proven ABB S300P series, it combines exceptional fault-breaking performance, robust construction and reliable switching for industrial power distribution and motor protection.
Manufactured in accordance with international IEC and UL standards, the S303P-K63 is ideally suited to industrial control panels, switchgear assemblies and OEM machinery. Its compact DIN rail mounting format, fail-safe screw terminals and flexible top or bottom supply connection enable straightforward installation and long service life.
With a rated current of 63 A, a Type K tripping characteristic and a rated ultimate short-circuit breaking capacity of 25 kA at 415 V AC, the S303P-K63 is particularly suitable for protecting motors, transformers, compressors and other inductive loads with high inrush currents.
Key Advantages
- Industrial-grade three-pole miniature circuit breaker.
- 63 A rated current for demanding industrial applications.
- Type K tripping characteristic designed for motors and inductive loads.
- 25 kA breaking capacity for outstanding fault protection.
- Fail-safe terminals ensure secure and reliable wiring.
- Compact DIN rail mounting for rapid installation.
Key Features
- ABB S300P series.
- Three-pole configuration.
- 63 A rated current.
- Type K tripping characteristic.
- Rated operating voltage up to 415 V AC.
- Rated operating voltage up to 125 V DC.
- 25 kA rated ultimate short-circuit breaking capacity at 415 V AC.
- Fail-safe cylinder-lift screw terminals.
- Top or bottom supply connection.
- Compatible with ABB System pro M Compact accessories.
Reliable Protection for Industrial Motors and Equipment
The ABB S303P-K63 automatically disconnects electrical circuits during overload or short-circuit conditions, protecting motors, transformers, cables and connected equipment from electrical damage while helping minimise downtime and maintenance costs.
Its Type K tripping characteristic is specifically engineered for circuits with elevated starting currents, making it ideal for motor control centres, industrial machinery, compressors and OEM equipment where dependable protection without nuisance tripping is essential.
Typical Applications
- Three-phase motor protection.
- Industrial control panels.
- Machine building and OEM equipment.
- Transformers and inductive loads.
- Industrial power distribution.
- Manufacturing and automation systems.
