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2CSB804201R3630 ABB DDA804AS630.3 DDA804 A S-63/0.3 RCD Block 4P 63A 300mA
ABB DDA804AS630.3 is a four-pole 63 A Type A selective residual current device block with 300 mA sensitivity designed for compatible ABB S800 series miniature circuit breakers.
£495.72
Why Choose the ABB DDA804AS630.3 Residual Current Device Block?
The ABB DDA804AS630.3, manufacturer type DDA804 A S-63/0.3, is a four-pole Type A selective residual current device (RCD) block designed for combination with compatible ABB S800 series miniature circuit breakers. Rated at 63 A with a 300 mA residual operating current, it provides dependable earth-fault protection for commercial and industrial electrical installations.
As part of the ABB DDA800 series, this selective RCD block detects sinusoidal alternating and pulsating DC residual currents. Its intentional tripping delay enables selectivity with downstream instantaneous residual current devices, helping isolate faults at the appropriate circuit level while maintaining continuity elsewhere in the installation.
The DDA804 A S-63/0.3 is a 4-pole Type A selective device suitable for compatible ABB S800 series circuit breakers. Its modular design allows residual current protection to be combined with the overcurrent and short-circuit protection provided by the associated miniature circuit breaker.
Key Advantages
- 63 A rated current for commercial and industrial distribution circuits.
- 300 mA rated residual current for earth-fault protection.
- Type A residual current detection for sinusoidal AC and pulsating DC fault currents.
- Selective operating characteristic with intentional tripping delay.
- 4-pole configuration for multiphase electrical installations.
- Designed for combination with compatible ABB S800 series MCBs.
- Selective coordination helps improve continuity by allowing downstream instantaneous residual current protection to operate first where appropriate.
Key Features
- ABB DDA800 series RCD block.
- 63 A rated current.
- 300 mA rated residual current (IΔn).
- Type A selective (S) characteristic.
- Four-pole construction.
- Designed for use with compatible ABB S800 series circuit breakers.
- Provides residual current protection when assembled with the appropriate MCB.
- Suitable for demanding commercial and industrial electrical distribution systems.
Selective Earth-Fault Protection for S800 Circuits
The ABB DDA800 range is designed to add residual current protection to compatible S800 miniature circuit breakers. When assembled with the appropriate breaker, the combination provides residual current protection alongside the overcurrent and short-circuit protection supplied by the MCB.
The selective characteristic of the DDA804 A S-63/0.3 introduces an intentional operating delay. This supports coordinated protection with downstream instantaneous residual current devices, helping prevent an upstream device from unnecessarily disconnecting a wider section of an installation when a downstream protective device can clear the fault.
Typical Applications
- Industrial electrical distribution systems.
- Commercial electrical installations.
- Distribution boards using ABB S800 series circuit breakers.
- Four-pole three-phase circuit protection.
- Selective residual current protection schemes.
- Machinery and industrial control distribution circuits.
- Installations requiring protection against AC and pulsating DC residual currents.
Technical Specifications
| Series | DDA800 |
|---|---|
| SKU | DDA804AS630.3 |
| ABB order code | 2CSB804201R3630 |
| Product type | Residual current device (RCD) block |
| Residual current type | Type A |
| Operating characteristic | Selective (S) |
| Number of poles | 4 |
| Rated current | 63 A |
| Rated residual current | 300 mA |
| Product group | S800 / S800P / S750 MCB |
| Mounting/application | Combination with compatible ABB S800 series MCB |
Frequently Asked Questions
What is the ABB DDA804AS630.3 used for?
It is a four-pole selective residual current device block designed to provide earth-fault protection when combined with a compatible ABB S800 series miniature circuit breaker.
What is the rated current of the DDA804 A S-63/0.3?
The device has a rated current of 63 A.
What is the residual current sensitivity?
The DDA804 A S-63/0.3 has a rated residual operating current of 300 mA.
What does Type A selective mean?
Type A enables detection of sinusoidal AC and pulsating DC residual currents, while the selective characteristic provides an intentional tripping delay to support coordination with downstream instantaneous residual current devices.
Which circuit breaker range is the DDA804AS630.3 designed for?
The DDA804AS630.3 is designed to be combined with compatible ABB S800 series miniature circuit breakers to provide residual current, overload and short-circuit protection as an assembled protective solution.
Trusted ABB Circuit Protection
ABB DDA800 residual current device blocks provide coordinated earth-fault protection for S800 circuit-breaker installations, combining Type A residual current detection with selective operation for demanding commercial and industrial distribution systems.
