ABB S303P-C8NA 3P+N miniature circuit breaker with an 8 A rated current, Type C tripping characteristic, switched neutral and 25 kA breaking capacity for industrial and commercial distribution circuits.
£157.34
The ABB S303P-C8NA (2CDS383103R0084) is a premium three-phase plus switched neutral (3P+N) miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial and commercial electrical installations. Part of the renowned ABB S300P series, it delivers exceptional fault-breaking performance for distribution boards, switchgear, control panels and OEM machinery.
Manufactured in accordance with international IEC and UL standards, the S303P-C8NA features three protected phase poles with a switched neutral pole, allowing simultaneous isolation of all conductors while protecting the phase conductors from overload and short-circuit faults. Its compact DIN rail design, fail-safe cylinder-lift screw terminals and top or bottom supply connections simplify installation and maintenance.
With a rated current of 8 A, a Type C tripping characteristic and a rated short-circuit breaking capacity of 25 kA, the S303P-C8NA is ideal for industrial automation, three-phase control circuits, instrumentation and commercial distribution systems requiring switched neutral isolation.
The ABB S303P-C8NA automatically disconnects electrical circuits during overload or short-circuit conditions, protecting cables, switchgear and connected equipment while helping minimise downtime and maintenance costs.
Its Type C tripping characteristic accommodates moderate inrush currents, making it suitable for industrial automation equipment, motor control circuits, instrumentation and commercial electrical installations where switched neutral isolation is required.
| Current | 8 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | S300P |
| Model | S303P-C8NA |
| Product ID | 2CDS383103R0084 |
| EAN | 4016779077378 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 8 A |
| Configuration | 3P+N (3 protected poles + switched neutral) |
| Total number of poles | 4 |
| Number of protected poles | 3 |
| Neutral pole | Switched, unprotected |
| Tripping characteristic | Type C |
| Rated AC voltage | 415 V AC |
| Maximum DC voltage | 125 V DC |
| Rated insulation voltage (Ui) | 500 V |
| Rated impulse withstand voltage (Uimp) | 6 kV |
| Rated short-circuit breaking capacity (Icn) | 25 kA |
| Ultimate breaking capacity (Icu) | 100 kA |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Modular width | 4 modules |
| Dimensions (H × W × D) | Approx. 88 × 70 × 69 mm |
| Weight | Approx. 0.496 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The S303P-C8NA protects three-phase electrical circuits against overloads and short circuits while providing switched neutral isolation, making it suitable for industrial control and commercial distribution applications.
The ABB S303P-C8NA has a rated current of 8 A.
3P+N indicates three protected phase poles with one switched neutral pole. The neutral is isolated together with the phase conductors but is not provided with overcurrent protection.
The circuit breaker provides a rated short-circuit breaking capacity of 25 kA to IEC/EN 60898-1 and an ultimate breaking capacity of 100 kA to IEC 60947-2.
The breaker mounts directly onto a standard DIN rail and supports top or bottom supply connections using cables or compatible ABB busbars.
ABB S300P miniature circuit breakers are trusted by electrical engineers, panel builders and OEM manufacturers for dependable circuit protection, exceptional fault-breaking performance and long-term reliability in demanding industrial environments.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...