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2CSR256140R1087 ABB DS203NCK8A30 RCBO 3P+N K8 Type A 30mA 6kA
ABB DS203NCK8A30 is an 8 A 3P+N Type K RCBO with 30 mA Type A residual-current protection and a 6 kA rated short-circuit breaking capacity for commercial and industrial three-phase circuits.
£194.84
Why Choose the ABB DS203NCK8A30 RCBO?
The ABB DS203NCK8A30 is a compact 3P+N residual current circuit breaker with overcurrent protection (RCBO) designed to protect three-phase end-user circuits against overloads, short circuits and residual earth-fault currents. Part of the ABB DS203NC series, it combines residual-current and overcurrent protection within a single four-module device for efficient commercial and industrial electrical distribution.
This RCBO has a rated current of 8 A, a Type K tripping characteristic and a rated residual operating current of 30 mA. Its Type A residual-current characteristic detects sinusoidal alternating and pulsating DC residual currents, providing suitable protection for modern electrical circuits where these residual-current waveforms may occur.
With a rated short-circuit breaking capacity of 6 kA, the DS203NC K8 A30 combines comprehensive circuit protection with a compact 3P+N DIN-rail format. Its 30 mA sensitivity provides protection against indirect contact and additional protection against direct contact in suitable installations.
Key Advantages
- Combined residual-current, overload and short-circuit protection in one device.
- 8 A rated current with Type K tripping characteristic.
- 30 mA residual-current sensitivity for additional protection in suitable installations.
- Type A residual-current detection for sinusoidal AC and pulsating DC residual currents.
- 3P+N configuration for three-phase circuits with neutral.
- 6 kA rated short-circuit breaking capacity.
Key Features
- ABB DS203NC RCBO series.
- 8 A rated current.
- Type K tripping curve.
- 30 mA rated residual operating current.
- Type A residual-current characteristic.
- Detection of sinusoidal alternating and pulsating DC residual currents.
- 3P+N four-pole configuration.
- 6 kA rated short-circuit breaking capacity (Icn).
- Compact four-module DIN-rail design.
- Designed for commercial and industrial applications.
Reliable Type A Protection for Three-Phase Circuits
The ABB DS203NCK8A30 combines overcurrent and residual-current protection within one modular device. Its overcurrent function protects against overload and short-circuit currents, while the Type A residual-current function responds to sinusoidal alternating and pulsating DC earth-fault currents that can occur in modern electrical installations.
With a residual-current sensitivity of 30 mA, the DS203NCK8A30 provides protection against indirect contact and additional protection against direct contact where applicable. Its Type K tripping characteristic and compact four-module 3P+N construction make it particularly suitable for appropriate commercial and industrial circuits requiring integrated overcurrent and residual-current protection.
Typical Applications
- Three-phase end-user electrical circuits.
- Commercial electrical distribution boards.
- Industrial electrical distribution systems.
- Control panels and switchboards.
- Circuits containing equipment capable of producing pulsating DC residual currents.
- Three-phase circuits requiring combined Type K overcurrent and Type A residual-current protection.
Technical Specifications
| Series | DS203NC |
|---|---|
| SKU | DS203NCK8A30 |
| ABB order code | 2CSR256140R1087 |
| Product group | DS200 / DSH200 RCBO |
| Product type | Residual current circuit breaker with overcurrent protection (RCBO) |
| Rated current | 8 A |
| Tripping characteristic | K |
| Rated residual operating current | 30 mA |
| Residual-current type | A |
| Number of poles | 4 (3P+N) |
| Number of protected poles | 3 |
| Rated short-circuit breaking capacity (Icn) | 6 kA |
| Operating characteristic | Undelayed |
| Degree of protection | IP2X |
| Mounting type | DIN rail |
| Width | 4 modules |
| Weight | 480 g |
| Standards | IEC/EN 61009-1, IEC/EN 61009-2-1 |
| Application | Commercial and industrial |
| EAN | 8012542629726 |
Frequently Asked Questions
What is the ABB DS203NCK8A30 used for?
The ABB DS203NCK8A30 is a 3P+N RCBO designed to protect three-phase end-user circuits against overloads, short circuits and residual earth-fault currents.
What is the rated current and tripping curve of the DS203NCK8A30?
The DS203NCK8A30 has a rated current of 8 A and uses a Type K tripping characteristic.
What residual-current protection does the DS203NCK8A30 provide?
The device has a rated residual operating current of 30 mA and uses Type A residual-current detection for sinusoidal alternating and pulsating DC residual currents.
What is the breaking capacity of the ABB DS203NCK8A30?
The DS203NCK8A30 has a rated short-circuit breaking capacity of 6 kA.
How much panel space does the DS203NCK8A30 require?
The ABB DS203NCK8A30 uses a compact four-module 3P+N format, integrating residual-current and overcurrent protection within one DIN-rail device.
Trusted ABB Circuit Protection
ABB DS203NC Type A residual current circuit breakers with overcurrent protection combine compact three-phase circuit protection with detection of sinusoidal AC and pulsating DC residual currents, providing integrated protection for modern commercial and industrial electrical systems.
