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2CSB803201R3630 ABB DDA803 A S-63/0.3 RCD Block 3P AS 63A 300mA
ABB DDA803 A S-63/0.3 is a 3-pole 63 A selective Type A residual current device block with 300 mA residual operating current for coordinated residual-current protection with compatible ABB S800 circuit breakers.
£459.11
Why Choose the ABB DDA803 A S-63/0.3 Residual Current Device?
The ABB DDA803 A S-63/0.3 is a 3-pole residual current device (RCD) block designed to provide residual-current protection when combined with a compatible ABB S800 series miniature circuit breaker. It provides a modular solution for adding earth-leakage protection to three-pole low-voltage electrical distribution circuits.
Featuring an AS residual-current characteristic, the DDA803 A S-63/0.3 combines Type A residual-current detection with selective time-delayed operation. It detects sinusoidal alternating and pulsating DC residual currents, while its selective behaviour supports coordination with downstream residual-current protective devices.
With a rated current of 63 A, a rated residual operating current of 300 mA and a 3-pole configuration, the DDA803 A S-63/0.3 is suitable for compatible three-pole ABB S800 circuit-breaker assemblies requiring selective residual-current protection. Its modular construction supports integration into professional electrical distribution boards and panel assemblies.
Key Advantages
- 300 mA rated residual operating current for residual-current protection.
- 63 A rated current for distribution circuits.
- 3-pole configuration for compatible three-pole circuit-breaker assemblies.
- AS characteristic combines Type A detection with selective time-delayed operation.
- Detects sinusoidal AC and pulsating DC residual currents.
- Designed for combination with compatible ABB S800 series MCBs.
Key Features
- ABB DDA800 series residual current device block.
- 63 A rated current.
- 300 mA rated residual operating current.
- 3-pole construction.
- AS selective residual-current characteristic.
- Type A detection of sinusoidal AC and pulsating DC residual currents.
- Selective time delay supports coordination with downstream residual-current devices.
- Provides residual-current protection when assembled with a compatible ABB S800 circuit breaker.
Selective Type A Residual-Current Protection
Selective residual-current protection is used to coordinate protective devices installed at different levels of an electrical distribution system. The time-delayed operation of an upstream selective RCD allows an appropriate downstream device to disconnect a local residual-current fault first, helping limit unnecessary interruption to other circuits.
The ABB DDA803 A S-63/0.3 combines selective operation with Type A residual-current detection. Its 63 A current rating and 300 mA residual operating threshold make it suitable for three-pole distribution applications requiring coordinated residual-current protection.
Typical Applications
- Low-voltage electrical distribution boards.
- Commercial and industrial electrical installations.
- Three-pole distribution circuits requiring selective residual-current protection.
- ABB S800 circuit-breaker assemblies.
- Upstream circuits requiring 300 mA residual-current protection.
- Installations requiring coordination with downstream residual-current devices.
Technical Specifications
| Series | DDA800 |
|---|---|
| ABB order code | 2CSB803201R3630 |
| Product type | Residual current device (RCD) block |
| Number of poles | 3 |
| Rated current | 63 A |
| Rated residual operating current | 300 mA |
| Residual-current characteristic | AS |
| Residual-current detection | Type A |
| Operating characteristic | Selective, time-delayed |
| Application | Residual-current protection with compatible ABB S800 series MCB |
Frequently Asked Questions
What is the ABB DDA803 A S-63/0.3 used for?
The DDA803 A S-63/0.3 is a selective residual current device block used with a compatible ABB S800 series circuit breaker to provide residual-current protection in low-voltage electrical distribution systems.
What is the rated current of the DDA803 A S-63/0.3?
The ABB DDA803 A S-63/0.3 has a rated current of 63 A.
What is the residual operating current of the DDA803 A S-63/0.3?
The device has a rated residual operating current of 300 mA.
What does the AS characteristic mean?
The AS characteristic combines Type A residual-current detection with selective time-delayed operation, supporting coordination with downstream residual-current protective devices.
How many poles does the ABB DDA803 A S-63/0.3 have?
The DDA803 A S-63/0.3 has a 3-pole configuration for use with compatible three-pole ABB S800 circuit-breaker assemblies.
Trusted ABB Residual-Current Protection
ABB DDA800 residual current device blocks extend compatible S800 circuit breakers with residual-current protection, providing a modular solution for low-voltage distribution systems requiring dependable earth-leakage fault detection and coordinated circuit disconnection.
