Why Choose the ABB S303P-B63 Miniature Circuit Breaker?
The ABB S303P-B63 (2CDS383001R0635) is a high-performance three-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial electrical installations. As part of the proven ABB S300P series, it delivers excellent fault protection, robust construction and reliable switching performance for industrial power distribution and commercial applications.
Manufactured in accordance with recognised IEC and UL standards, the S303P-B63 features a compact DIN rail design with fail-safe cylinder-lift screw terminals and flexible top or bottom supply connections. Its rugged construction ensures dependable operation in demanding industrial environments while simplifying installation and maintenance.
With a rated current of 63 A, a Type B tripping characteristic and a rated ultimate short-circuit breaking capacity of 25 kA at 415 V AC, the S303P-B63 is ideally suited for protecting power distribution circuits, lighting installations, resistive loads and cable systems where rapid fault protection is required.
Key Advantages
- Industrial-grade three-pole miniature circuit breaker.
- 63 A rated current for demanding installations.
- Type B tripping characteristic for resistive and general-purpose circuits.
- 25 kA short-circuit breaking capacity.
- Fail-safe terminals provide secure conductor installation.
- Compact DIN rail mounting for fast panel assembly.
Key Features
- ABB S300P series.
- Three-pole configuration.
- 63 A rated current.
- Type B 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.
- Fail-safe cylinder-lift screw terminals.
- Top or bottom supply connection.
- Compatible with ABB System pro M Compact accessories.
Reliable Protection for Industrial Power Distribution
The ABB S303P-B63 automatically disconnects electrical circuits when overloads or short circuits occur, protecting cables, switchgear and connected equipment from damage while helping minimise downtime and maintenance costs.
Its Type B tripping characteristic provides fast magnetic operation for circuits with relatively low inrush currents, making it ideal for power distribution, lighting systems, commercial installations and general industrial electrical circuits.
Typical Applications
- Industrial power distribution.
- Commercial electrical installations.
- Lighting circuits.
- Cable and feeder protection.
- Industrial control panels.
- OEM machinery and automation systems.
