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2CSB804201R5000 ABB DDA804 A S-100/1 Selective RCD Block 4P Type A 1000 mA 100 A
ABB DDA804 A S-100/1 is a 100 A four-pole 1000 mA Type A selective RCD block designed for coordinated residual current protection with compatible ABB S800 miniature circuit-breakers.
£642.69
Why Choose the ABB DDA804 A S-100/1 RCD Block?
The ABB DDA804 A S-100/1 is a high-performance Type A selective residual current device (RCD) block designed for assembly with compatible ABB S800 miniature circuit-breakers. As part of the ABB DDA800 series, it provides residual current protection for electrical installations while allowing the associated S800 MCB to provide overload and short-circuit protection.
The selective S characteristic provides time-delayed operation to support coordination with downstream residual current protective devices. This helps downstream protection disconnect a local earth fault before the upstream selective device operates when the installation is correctly coordinated, improving continuity of supply to unaffected circuits. As a Type A device, the DDA804 detects sinusoidal alternating residual currents and pulsating DC residual currents.
With a rated current of 100 A, a four-pole configuration and a rated residual operating current of 1000 mA, the DDA804 A S-100/1 is designed for demanding three-phase electrical distribution systems requiring selective earth leakage and fault protection. Its modular construction enables integration with compatible ABB S800 miniature circuit-breakers.
Key Advantages
- Selective Type A RCD block for compatible ABB S800 miniature circuit-breakers.
- 100 A rated current for demanding electrical distribution applications.
- 1000 mA rated residual current for earth leakage and fault protection.
- Four-pole configuration for suitable three-phase distribution circuits.
- Selective S characteristic supports coordination with downstream residual current devices.
- Detects sinusoidal AC and pulsating DC residual currents.
- Combines with a compatible S800 MCB to provide residual current and overcurrent protection.
- Suitable for commercial and industrial low-voltage distribution systems.
Key Features
- ABB DDA800 RCD block series.
- Type A residual current detection.
- Selective S operating characteristic.
- 100 A rated current.
- 1000 mA rated residual current.
- 4-pole configuration.
- Time-delayed operation for selective residual current protection.
- Detects alternating and pulsating DC residual fault currents.
- Designed for assembly with compatible ABB S800 miniature circuit-breakers.
- Suitable for three-phase commercial and industrial distribution systems.
- ABB order code 2CSB804201R5000.
Selective Residual Current Protection for Distribution Systems
Residual current devices monitor the balance of current flowing through protected conductors and operate when leakage to earth reaches the specified threshold. The 1000 mA rated residual current of the ABB DDA804 A S-100/1 makes it suitable for appropriate earth fault and leakage protection applications in commercial and industrial electrical distribution systems.
The selective S characteristic provides delayed operation to facilitate coordination with downstream RCDs. When the protective system is correctly designed, a downstream residual current device can clear a local fault before the upstream selective device operates, helping maintain electrical service to unaffected parts of the installation.
Typical Applications
- Three-phase commercial electrical distribution systems.
- Industrial electrical installations.
- Distribution boards using compatible ABB S800 miniature circuit-breakers.
- Circuits requiring 1000 mA residual current protection.
- Electrical installations requiring selective coordination between RCDs.
- Installations containing equipment capable of producing pulsating DC residual currents.
Technical Specifications
| Series | DDA800 |
|---|---|
| ABB order code | 2CSB804201R5000 |
| Product type | Selective RCD block |
| Residual current type | Type A |
| Operating characteristic | Selective S |
| Rated current | 100 A |
| Rated residual current | 1000 mA |
| Number of poles | 4 |
| Application | Three-phase electrical distribution |
| Residual current detection | Sinusoidal AC and pulsating DC |
| Compatible product family | ABB S800 miniature circuit-breakers |
Frequently Asked Questions
What is the ABB DDA804 A S-100/1 used for?
The DDA804 A S-100/1 is a Type A selective RCD block designed for assembly with compatible ABB S800 miniature circuit-breakers to provide residual current protection in suitable three-phase electrical distribution systems.
What is the residual current sensitivity of the DDA804 A S-100/1?
The ABB DDA804 A S-100/1 has a rated residual operating current of 1000 mA.
What does the S characteristic mean on this ABB RCD block?
The S characteristic indicates selective, time-delayed operation designed to support coordination with downstream residual current protective devices.
What type of residual current does the DDA804 A S-100/1 detect?
As a Type A device, it detects sinusoidal alternating residual currents and pulsating DC residual currents.
What is the ABB order code for the DDA804 A S-100/1?
The ABB order code for the DDA804 A S-100/1 is 2CSB804201R5000.
Trusted Residual Current Protection from ABB
ABB DDA800 RCD blocks are designed to combine with compatible S800 miniature circuit-breakers, providing dependable residual current protection and selective coordination options for demanding commercial and industrial low-voltage distribution systems.
