ABB S303P-B63 three-pole miniature circuit breaker with a 63 A rated current, Type B tripping characteristic and 25 kA breaking capacity for industrial and commercial circuit protection.
£164.96
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.
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.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S300P |
| Model | S303P-B63 |
| Product ID | 2CDS383001R0635 |
| EAN | 4016779077545 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 63 A |
| Number of poles | 3 |
| Number of protected poles | 3 |
| Tripping characteristic | Type B |
| Rated AC voltage | 415 V AC |
| Rated DC voltage | 125 V DC |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 6 kV |
| Rated ultimate short-circuit breaking capacity (Icu) | 25 kA at 415 V AC |
| Rated service breaking capacity (Icn) | 15 kA at 400 V AC |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | 88 × 52.5 × 69 mm |
| Weight | Approx. 0.372 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The S303P-B63 protects three-phase industrial and commercial electrical circuits against overloads and short circuits, making it suitable for power distribution, lighting and cable protection.
The ABB S303P-B63 has a rated current of 63 A.
Type B circuit breakers are designed for circuits with relatively low inrush currents, making them ideal for lighting, resistive loads and general-purpose electrical installations.
The breaker provides a rated ultimate short-circuit breaking capacity of 25 kA at 415 V AC.
The breaker mounts directly onto a standard DIN rail inside switchboards, industrial control panels and electrical distribution systems.
ABB S300P miniature circuit breakers are trusted by electrical engineers, panel builders and OEM manufacturers for dependable circuit protection, high breaking performance and long-term reliability in demanding industrial and commercial applications.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...