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2CDS383103R0084 ABB S303P-C8NA Miniature Circuit Breaker – 3+NP – C – 8 A
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.
£86.54
Why Choose the ABB S303P-C8NA Miniature Circuit Breaker?
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.
Key Advantages
- Industrial-grade 3P+N miniature circuit breaker.
- 8 A rated current for industrial and commercial installations.
- Type C tripping characteristic for moderate inrush currents.
- 25 kA short-circuit breaking capacity.
- Switched neutral enables simultaneous isolation of all conductors.
- Compact DIN rail mounting with fail-safe terminals.
Key Features
- ABB S300P series.
- 3 protected poles + switched neutral (3P+N).
- 8 A rated current.
- Type C tripping characteristic.
- Rated operating voltage: 415 V AC.
- Maximum operating voltage: 125 V DC.
- 25 kA rated breaking capacity (Icn).
- 100 kA ultimate breaking capacity (Icu) according to IEC 60947-2.
- Rated insulation voltage: 500 V.
- Rated impulse withstand voltage: 6 kV.
Reliable Protection for Three-Phase Distribution Circuits
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.
Typical Applications
- Industrial automation systems.
- Three-phase control panels.
- Commercial distribution boards.
- Instrumentation circuits.
- OEM machinery.
- Industrial and commercial electrical installations.
Technical Specifications
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| Breaking Capacity | 25 kA | |
|---|---|---|
| Current | 8 A | |
| Phase | Three Phase | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| 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 |
Frequently Asked Questions
What is the ABB S303P-C8NA used for?
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.
What is the rated current of this circuit breaker?
The ABB S303P-C8NA has a rated current of 8 A.
What does 3P+N mean?
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.
What is the breaking capacity of the S303P-C8NA?
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.
How is the ABB S303P-C8NA installed?
The breaker mounts directly onto a standard DIN rail and supports top or bottom supply connections using cables or compatible ABB busbars.
Trusted by Industrial Professionals Worldwide
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.
