ABB S303P-C63NA 63A Type C miniature circuit breaker with 3P+N configuration and 25 kA breaking capacity for industrial electrical protection.
£212.08
The ABB 2CDS383103R0634, also identified as the S303P-C63NA, is a high-performance miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial electrical installations. As part of the trusted ABB System pro M compact S300P series, it combines exceptional reliability, a high breaking capacity and compliance with international IEC and UL standards for demanding industrial environments.
Featuring a Type C tripping characteristic, this circuit breaker is ideally suited to general-purpose industrial and commercial circuits with moderate inrush currents, including lighting, socket outlets, HVAC equipment, distribution circuits and control panels. Its thermal and magnetic trip mechanisms provide fast and reliable protection against overloads and short circuits.
With a rated current of 63 A, a 3P+N configuration and a rated operational voltage of up to 415 V AC, the S303P-C63NA is ideal for industrial switchboards, machine builders and OEM equipment. Its 25 kA ultimate breaking capacity, compact DIN rail mounting and robust construction make it suitable for demanding electrical installations.
The ABB S303P-C63NA automatically disconnects electrical circuits whenever overload or short-circuit conditions occur, helping protect electrical infrastructure, machinery and connected equipment. Its robust industrial construction ensures dependable long-term operation in demanding environments.
Its Type C tripping characteristic is intended for circuits with moderate inrush currents, making it suitable for general industrial distribution, commercial installations, lighting systems, HVAC equipment and electrical control panels.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S303P-C63NA |
| Product ID | 2CDS383103R0634 |
| EAN | 4016779076753 |
| Product type | Miniature circuit breaker |
| Rated current | 63 A |
| Number of poles | 3P+N |
| Protected poles | 3 |
| Neutral pole | Switched |
| Tripping characteristic | Type C |
| Rated operational voltage | 415 V AC |
| Voltage type | AC/DC |
| Rated frequency | 50 / 60 Hz |
| Rated insulation voltage | 500 V |
| Impulse withstand voltage | 6 kV |
| Ultimate short-circuit breaking capacity (IEC 60947-2) | 25 kA at 400/415 V AC |
| Rated breaking capacity (IEC 60898-1) | 15 kA at 400 V AC |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) |
| Mounting type | 35 mm DIN rail |
| Terminal capacity | 0.75 to 35 mm² solid, 0.75 to 25 mm² flexible |
| Operating temperature | -40 to +70 °C |
| Approximate dimensions (H × W × D) | 88 × 70 × 69 mm |
| Approximate weight | 0.496 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects three-phase electrical circuits against overloads and short circuits, making it ideal for industrial and commercial power distribution systems.
The ABB S303P-C63NA has a rated current of 63 A.
Type C breakers are designed for general-purpose circuits with moderate inrush currents, making them suitable for lighting, HVAC equipment, distribution systems and commercial installations.
The breaker provides a rated ultimate short-circuit breaking capacity of 25 kA at 400/415 V AC.
The breaker mounts directly onto a standard 35 mm DIN rail inside industrial control panels and electrical distribution boards.
ABB System pro M compact S300P miniature circuit breakers are trusted worldwide for delivering dependable overload and short-circuit protection across industrial automation, commercial installations and electrical distribution systems.
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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...