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ABB S303P-D8NA MCB – 3P+N – D Curve – 8A – 25kA
ABB S303P-D8NA miniature circuit breaker, a 8 A three pole plus neutral D characteristic AC protection device from the System pro M compact S300P series designed for industrial and commercial electrical installations.
£108.17
Why Choose the ABB S303P-D8NA Miniature Circuit Breaker?
The ABB S303P-D8NA is a high-performance miniature circuit breaker (MCB) designed for reliable overcurrent and short-circuit protection in industrial and commercial electrical installations. As part of the advanced ABB System pro M compact S300P series, it provides dependable circuit protection with a compact DIN-rail mounting design.
This circuit breaker features a D tripping characteristic, making it suitable for applications where high inrush currents occur, such as motors, transformers and industrial equipment. The S300P series combines robust protection technology with flexible installation options for modern electrical distribution systems.
With a rated current of 8 A, a 3P+N configuration with switched neutral and a rated breaking capacity of 25 kA, the ABB S303P-D8NA provides reliable protection for AC electrical circuits requiring enhanced fault interruption performance.
Key Advantages
- Compact miniature circuit breaker for industrial and commercial protection applications.
- 8 A rated current for dependable circuit protection.
- 25 kA rated breaking capacity for reliable fault interruption.
- D tripping characteristic for circuits with high starting currents.
- 3P+N design with switched neutral for complete multi-pole AC circuit isolation.
- Compatible with standard DIN-rail mounting systems.
Key Features
- ABB System pro M compact S300P series.
- S303P-D8NA miniature circuit breaker.
- 3P+N configuration with switched neutral.
- D tripping characteristic.
- 8 A rated current.
- 25 kA rated breaking capacity.
- AC circuit protection.
- DIN-rail mounting design for electrical distribution panels.
Reliable Circuit Protection for Industrial Installations
Miniature circuit breakers such as the ABB S303P-D8NA protect electrical circuits by automatically disconnecting the supply during overload or short-circuit conditions. This helps protect wiring, equipment and connected loads from electrical faults.
The ABB S300P series is designed for demanding electrical distribution applications, offering dependable protection performance, compact installation and compatibility with modern control and automation environments.
Typical Applications
- Industrial control panels and electrical cabinets.
- Motor and transformer protection circuits.
- Three-phase electrical distribution systems.
- Automation and machinery installations.
- Building and infrastructure power systems.
- Industrial equipment protection applications.
Technical Specifications
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| Current | 8 A | |
|---|---|---|
| Poles | 3-pole + N | |
| Phase | Three Phase | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 25 kA | |
| Frequency | 50 / 60 Hz | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 8 A | |
| Number of poles | 3P+N | |
| Neutral configuration | Switched neutral | |
| Tripping characteristic | D | |
| Supply type | AC | |
| Mounting type | DIN-rail mounting | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S303P-D8NA | |
| Order code | 2CDS383103R0081 | |
| Rated breaking capacity | 25 kA | |
| Supply | AC |
Frequently Asked Questions
What is the ABB S303P-D8NA used for?
The ABB S303P-D8NA is used for protecting AC electrical circuits against overloads and short circuits in industrial and commercial installations.
What is the rated current of this circuit breaker?
The ABB S303P-D8NA has a rated current of 8 A.
What tripping characteristic does the S303P-D8NA have?
The circuit breaker uses a D tripping characteristic, suitable for applications with higher inrush currents.
How many poles does the ABB S303P-D8NA have?
The S303P-D8NA is a 3P+N miniature circuit breaker with switched neutral.
What is the breaking capacity of this miniature circuit breaker?
The ABB S303P-D8NA has a rated breaking capacity of 25 kA.
Trusted by Electrical Engineers Worldwide
ABB System pro M compact S300P miniature circuit breakers are widely used by electrical engineers and industrial installers to provide reliable protection, safe operation and efficient power distribution in modern electrical systems.
