Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
2CSB802201R5000 ABB DDA802 A S-100/1 RCD Block 100 A 2P Type A S 1000 mA
ABB DDA802 A S-100/1 is a 100 A two-pole selective Type A RCD block with 1000 mA residual current sensitivity for coordinated residual current protection with compatible ABB S800 miniature circuit-breakers.
£559.07
Why Choose the ABB DDA802 A S-100/1 RCD Block?
The ABB DDA802 A S-100/1 is a high-performance two-pole Type A selective residual current device (RCD) block designed for combination with compatible ABB S800 miniature circuit-breakers. As part of the ABB DDA 800 series, it provides residual current protection for demanding electrical distribution systems where selective coordination with downstream residual current protection is required.
The Type A S characteristic combines detection of sinusoidal alternating and pulsating direct residual currents with a selective time-delayed response. This selective behaviour is particularly useful in cascaded protection systems, helping a downstream RCD clear a local earth fault before the upstream DDA802 A S-100/1 operates and thereby supporting continuity of supply to unaffected circuits.
With a rated current of 100 A, a rated residual operating current of 1000 mA and a two-pole configuration, the DDA802 A S-100/1 is designed for higher-current distribution applications. When correctly combined with a compatible ABB S800 MCB, it provides residual current protection alongside the overload and short-circuit protection of the associated circuit-breaker.
Key Advantages
- Selective Type A S residual current protection for coordinated electrical distribution systems.
- 100 A rated current suitable for higher-current distribution circuits.
- 1000 mA rated residual operating current for upstream earth fault protection.
- Two-pole configuration for compatible electrical distribution applications.
- Detects sinusoidal AC and pulsating DC residual currents.
- Selective time-delayed response supports coordination with downstream RCD protection.
- Designed for combination with compatible ABB S800 miniature circuit-breakers.
Key Features
- ABB DDA 800 residual current device block series.
- 100 A rated current.
- 1000 mA residual current sensitivity.
- Two-pole configuration.
- Type A S selective residual current characteristic.
- Detection of sinusoidal alternating and pulsating direct residual currents.
- Time-delayed selective operation for coordinated residual current protection.
- Designed for use with compatible ABB S800 MCBs.
- Suitable for upstream and distribution-level residual current protection.
- Modular solution for commercial and industrial electrical distribution systems.
Reliable Selective Residual Current Protection
Residual current protection monitors the balance of current flowing through the live conductors of a circuit and responds when earth leakage creates an imbalance above the specified operating threshold. The ABB DDA802 A S-100/1 provides Type A detection, allowing it to respond to both sinusoidal alternating residual currents and pulsating direct residual currents.
The selective time delay of the Type A S design supports discrimination between upstream and downstream residual current protective devices. Combined with its 100 A rated current and 1000 mA residual operating threshold, the DDA802 A S-100/1 is particularly suited to upstream distribution protection where continuity of supply and coordinated fault isolation are important.
Typical Applications
- Main and sub-distribution electrical systems.
- Commercial electrical distribution boards.
- Industrial electrical installations.
- Distribution systems using compatible ABB S800 miniature circuit-breakers.
- Upstream residual current protection requiring selective operation.
- Installations with cascaded downstream RCD protection.
Technical Specifications
| Series | DDA 800 |
|---|---|
| Product group | S800 / S800P / S750 MCB |
| Order code | 2CSB802201R5000 |
| Product type | Selective residual current device (RCD) block |
| Residual current type | Type A S (selective) |
| Number of poles | 2 |
| Rated current | 100 A |
| Rated residual operating current | 1000 mA |
| Time characteristic | Selective / time-delayed |
| MCB compatibility | Compatible ABB S800 miniature circuit-breakers |
| Application | Selective residual current protection for electrical distribution circuits |
Frequently Asked Questions
What is the ABB DDA802 A S-100/1 used for?
The ABB DDA802 A S-100/1 is a two-pole selective Type A residual current device block designed for combination with compatible ABB S800 MCBs in electrical distribution systems requiring coordinated residual current protection.
What is the rated current of the DDA802 A S-100/1?
The DDA802 A S-100/1 has a rated current of 100 A, making it suitable for higher-current electrical distribution applications.
What is the residual current sensitivity of the ABB DDA802 A S-100/1?
The DDA802 A S-100/1 has a rated residual operating current of 1000 mA, equivalent to 1 A.
What does Type A S mean on the DDA802 A S-100/1?
Type A indicates detection of sinusoidal alternating and pulsating direct residual currents, while S denotes selective time-delayed operation intended to support coordination with downstream residual current protective devices.
Which circuit-breakers can the ABB DDA802 A S-100/1 be used with?
The DDA802 A S-100/1 is designed for combination with compatible ABB S800 miniature circuit-breakers, adding selective residual current protection to the overload and short-circuit protection provided by the associated MCB.
Trusted ABB Residual Current Protection
ABB DDA 800 residual current blocks provide coordinated residual current protection in combination with compatible S800 miniature circuit-breakers, with selective Type A S versions designed for distribution systems where discrimination and continuity of supply are important.
