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2CCF020018R0001 ABB S803S-UCB8 MCB 50 kA 3P Type B 8 A
ABB S803S-UCB8 is an 8 A three-pole Type B high-performance miniature circuit breaker with 50 kA ultimate short-circuit breaking capacity at 750 V DC for demanding commercial and industrial DC circuit protection.
£259.32
Why Choose the ABB S803S-UCB8 High Performance MCB?
The ABB S803S-UCB8 is a high-performance three-pole miniature circuit breaker (MCB) designed to protect direct-current electrical circuits against overloads and short circuits where a high breaking capacity is required. As part of the ABB S800S-UC high-performance circuit breaker range, it provides robust circuit protection for demanding commercial and industrial installations.
This circuit breaker features a UC-B / Type B tripping characteristic, a rated current of 8 A and an ultimate short-circuit breaking capacity of 50 kA at 750 V DC. The Type B characteristic provides sensitive protection for circuits where substantial functional inrush currents are not normally expected, making the S803S-UCB8 suitable for control, auxiliary and DC distribution applications.
The S803S-UCB8 combines a three-pole configuration with ABB's S800S-UC platform dedicated to DC applications. Its high fault-current capability, interchangeable cage terminals and three-pole construction make it suitable for demanding systems requiring reliable circuit protection, selectivity or coordinated back-up protection.
Key Advantages
- High-performance miniature circuit breaker for demanding DC applications.
- 8 A rated current for reliable circuit protection.
- 50 kA ultimate short-circuit breaking capacity at 750 V DC.
- Three-pole configuration for coordinated protection and switching.
- UC-B / Type B characteristic suited to circuits without substantial functional inrush currents.
- Dedicated to direct-current circuit applications.
- Suitable for demanding commercial and industrial installations requiring high fault-current protection.
Key Features
- ABB S800S-UC high-performance MCB series.
- 8 A rated current.
- 3-pole configuration.
- UC-B / Type B tripping characteristic.
- 50 kA ultimate short-circuit breaking capacity at 750 V DC.
- Protection against overloads and short circuits.
- Designed for direct-current applications.
- Interchangeable cage terminals.
- Compliant with IEC/EN 60947-2.
- High-performance design for installations with demanding prospective fault-current requirements.
High-Performance Type B DC Circuit Protection
High-performance miniature circuit breakers such as the ABB S800S-UC series automatically interrupt electrical circuits during overload and short-circuit conditions. The 50 kA breaking capacity at 750 V DC of the S803S-UCB8 makes it suitable for demanding direct-current installations where high prospective fault currents require robust protective devices.
The UC-B / Type B characteristic provides sensitive circuit protection for applications where substantial functional inrush currents are not normally expected. Combined with its 8 A rating and three-pole construction, the S803S-UCB8 provides high-performance protection for DC control, auxiliary and distribution circuits in commercial and industrial systems.
Typical Applications
- Direct-current electrical distribution systems.
- Industrial control and auxiliary circuits.
- Industrial machinery and automation systems.
- Electrical distribution and control panels.
- Three-pole DC circuit protection.
- Commercial and industrial electrical installations.
- Applications requiring high short-circuit breaking capacity.
Technical Specifications
| Series | S800S / S800S-UC |
|---|---|
| Order code | 2CCF020018R0001 |
| Product group | S800 / S800P / S750 MCB |
| Product type | High-performance miniature circuit breaker (MCB) |
| Rated current | 8 A |
| Tripping characteristic | UC-B / Type B |
| Number of poles | 3 |
| Protected poles | 3 |
| Rated voltage | 750 V DC |
| Ultimate short-circuit breaking capacity (Icu) | 50 kA at 750 V DC |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Standard | IEC/EN 60947-2 |
| Application | Direct-current circuit protection |
| Terminal type | Interchangeable cage terminal |
| Width | 4.5 modules |
| Installation depth | 82.5 mm |
| Power loss | 5.1 W |
| Weight | approx. 0.74 kg |
| GTIN / EAN | 7612271500849 |
Frequently Asked Questions
What is the ABB S803S-UCB8 used for?
The S803S-UCB8 protects direct-current electrical circuits against overloads and short circuits and is designed for demanding commercial and industrial applications requiring three-pole protection and high breaking capacity.
What is the rated current of the S803S-UCB8?
The ABB S803S-UCB8 has a rated current of 8 A.
What is the breaking capacity of the S803S-UCB8?
The S803S-UCB8 has an ultimate short-circuit breaking capacity of 50 kA at 750 V DC, providing high fault-current protection for demanding DC installations.
What does the Type B characteristic of the S803S-UCB8 mean?
The UC-B / Type B characteristic provides sensitive circuit protection and is suited to applications where substantial functional inrush currents are not normally expected.
What is the ABB order code for the S803S-UCB8?
The ABB order code for the S803S-UCB8 is 2CCF020018R0001.
Trusted High-Performance Protection from ABB
ABB S800 high-performance circuit breakers provide reliable overload and short-circuit protection for demanding commercial and industrial installations, with specialised S800S-UC variants engineered for direct-current circuit applications.
