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2CCS863017R0205 ABB S803U-Z20 High Performance MCB 20 A 3P Z 50 kA UL 489
ABB S803U-Z20 is a 20 A three-pole Z-characteristic high-performance miniature circuit breaker with 50 kA breaking capacity and UL 489 compliance for sensitive industrial circuit protection.
£197.83
Why Choose the ABB S803U-Z20 High Performance MCB?
The ABB S803U-Z20 is a high-performance three-pole miniature circuit breaker (MCB) designed to provide overload and short-circuit protection in demanding electrical installations. As part of the ABB S800U high-performance circuit breaker range, it combines a 20 A rated current, Z tripping characteristic and high short-circuit breaking capacity with suitability for applications requiring UL 489 circuit protection.
This circuit breaker provides dependable protection for cables, control equipment and electrical loads while offering a 50 kA breaking capacity. Its Z characteristic is designed for sensitive circuits where rapid magnetic response to comparatively low overcurrents is required, making it particularly useful for protecting electronic equipment and control circuits.
With a rated current of 20 A and a three-pole configuration, the S803U-Z20 provides coordinated protection across three conductors. Its combination of high breaking capacity, sensitive Z characteristic and UL 489 compliance makes it suitable for industrial control, automation and power distribution applications requiring robust circuit protection.
Key Advantages
- High-performance three-pole miniature circuit breaker for demanding electrical installations.
- 20 A rated current with Z tripping characteristic.
- 50 kA breaking capacity for robust short-circuit protection.
- Z characteristic for sensitive circuits requiring rapid response to overcurrent conditions.
- Designed for applications requiring UL 489 circuit protection.
- Thermal and electromagnetic protection against overload and short-circuit conditions.
Key Features
- ABB S800U / S803U high-performance MCB series.
- 20 A rated current.
- Three-pole configuration.
- Z tripping characteristic.
- 50 kA breaking capacity.
- UL 489 circuit breaker design.
- Current-limiting circuit protection.
- Thermal overload and electromagnetic short-circuit tripping.
- Suitable for sensitive electronic and control circuits.
- Designed for demanding industrial distribution and automation applications.
Sensitive High-Performance Circuit Protection
Miniature circuit breakers such as the ABB S803U-Z20 automatically interrupt current when overload or short-circuit conditions occur. Thermal tripping responds to sustained overloads, while electromagnetic tripping provides rapid operation during short-circuit faults, helping protect conductors, equipment and electrical infrastructure.
The Z characteristic provides a sensitive magnetic response compared with characteristics intended for loads with higher starting currents. Combined with its 20 A rating, three-pole construction, 50 kA breaking capacity and UL 489 design, the S803U-Z20 is well suited to applications where sensitive equipment requires dependable high-performance circuit protection.
Typical Applications
- Industrial electrical distribution systems.
- Automation and process control panels.
- Sensitive electronic equipment circuits.
- Control and instrumentation circuits.
- Three-phase circuits requiring sensitive overcurrent protection.
- Installations requiring UL 489 circuit breakers.
Technical Specifications
Tick the specs you need, then view products that match.
| Certification | UL 489 | |
|---|---|---|
| Series | S800U / S803U | |
| SKU | S803UZ20 | |
| ABB order code | 2CCS863017R0205 | |
| Product type | High-performance miniature circuit breaker (MCB) | |
| Number of poles | 3 | |
| Rated current | 20 A | |
| Tripping characteristic | Z | |
| Breaking capacity | 50 kA | |
| Standard | UL 489 | |
| Protection functions | Overload and short-circuit protection | |
| Tripping mechanisms | Thermal and electromagnetic |
Frequently Asked Questions
What is the ABB S803U-Z20 used for?
The S803U-Z20 is a high-performance three-pole miniature circuit breaker designed to protect electrical circuits against overload and short-circuit currents, particularly where sensitive Z-characteristic protection is required.
What is the current rating of the S803U-Z20?
The ABB S803U-Z20 has a rated current of 20 A.
What is the breaking capacity of the S803U-Z20?
The S803U-Z20 has a 50 kA breaking capacity, providing robust short-circuit protection for demanding electrical installations.
What does the Z characteristic mean on the S803U-Z20?
The Z tripping characteristic provides sensitive magnetic operation and is particularly suitable for circuits containing electronic, control and other equipment requiring rapid response to overcurrent conditions.
Which standard applies to the ABB S803U-Z20?
The ABB S803U-Z20 is designed for circuit protection applications requiring compliance with UL 489.
Trusted High-Performance Protection from ABB
ABB S800 high-performance circuit breakers are engineered for demanding electrical installations where dependable overload and short-circuit protection, high breaking capacity and robust industrial performance are required.
