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2CSB804101R3630 ABB DDA804 A-63/0.3 RCD Block 4P Type A 300 mA 63 A
ABB DDA804 A-63/0.3 is a four-pole 63 A Type A residual current device block with 300 mA sensitivity designed for residual-current protection with compatible ABB S800 series miniature circuit breakers.
£354.20
Why Choose the ABB DDA804 A-63/0.3 RCD Block?
The ABB DDA804 A-63/0.3 is a robust Type A residual current device (RCD) block designed to provide earth-fault protection when combined with compatible ABB S800 series miniature circuit breakers. With a rated current of 63 A, four-pole configuration and 300 mA rated residual operating current, it is suited to commercial and industrial electrical distribution systems requiring dependable residual-current protection.
As part of the ABB DDA800 series, the DDA804 A-63/0.3 provides Type A residual-current detection, enabling it to respond to both sinusoidal alternating residual currents and pulsating DC residual currents. This makes it suitable for modern installations containing electronic equipment and loads that may produce non-sinusoidal earth-fault currents.
The four-pole configuration is designed for three-phase systems with a neutral conductor, while the 63 A current rating and 300 mA sensitivity make the unit particularly suitable for distribution-level earth-fault protection. When assembled with a compatible ABB S800 MCB, it combines residual-current protection with the overcurrent protection provided by the circuit breaker.
Key Advantages
- Dependable Type A residual-current protection for commercial and industrial installations.
- 63 A rated current for distribution and equipment circuits.
- 300 mA rated residual operating current.
- Four-pole configuration suitable for three-phase systems with neutral.
- Detects sinusoidal AC and pulsating DC residual currents.
- Combines with a compatible MCB to provide residual-current and overcurrent protection.
- Designed for integration with compatible ABB S800 series miniature circuit breakers.
Key Features
- ABB DDA800 residual current device block series.
- Type A residual-current characteristic.
- 63 A nominal current.
- 300 mA residual-current sensitivity.
- 4-pole configuration.
- Designed for three-phase electrical distribution systems with neutral.
- Suitable for 50–60 Hz AC electrical systems.
- Modular design for combination with compatible ABB S800 MCBs.
- Designed in accordance with IEC/EN 60947-2 Annex B.
Reliable Type A Residual-Current Protection
Residual current device blocks monitor electrical circuits for current unintentionally flowing to earth. The ABB DDA804 A-63/0.3 uses Type A residual-current detection, allowing it to respond to sinusoidal alternating residual currents as well as pulsating DC residual currents that can be produced by electronic loads and modern electrical equipment.
When assembled with a compatible ABB S800 miniature circuit breaker, the DDA804 A-63/0.3 complements the MCB's short-circuit and overload protection with residual-current protection. Its four-pole arrangement makes it particularly suitable for three-phase distribution circuits incorporating a neutral conductor.
Typical Applications
- Industrial electrical distribution boards.
- Commercial power distribution systems.
- Three-phase circuits with neutral conductors.
- Machine and automation control panels.
- Industrial plant and infrastructure installations.
- Distribution-level earth-fault protection.
- Circuits using compatible ABB S800 series miniature circuit breakers.
Technical Specifications
| Series | DDA800 |
|---|---|
| SKU | DDA804A630.3 |
| ABB order code | 2CSB804101R3630 |
| Product type | Residual current device (RCD) block |
| Residual-current type | Type A |
| Number of poles | 4 |
| Rated current | 63 A |
| Rated residual operating current | 300 mA |
| Rated frequency | 50–60 Hz |
| Rated insulation voltage | 690 V |
| Rated impulse withstand voltage | 6 kV |
| Standard | IEC/EN 60947-2 Annex B |
| Product group | S800 / S800P / S750 MCB |
| Mounting | Combination with compatible ABB S800 series MCB |
Frequently Asked Questions
What is the ABB DDA804 A-63/0.3 used for?
The DDA804 A-63/0.3 is a four-pole Type A RCD block designed to provide residual-current protection when combined with a compatible ABB S800 series miniature circuit breaker.
What is the rated current of the DDA804 A-63/0.3?
The ABB DDA804 A-63/0.3 has a rated current of 63 A.
What residual-current sensitivity does this RCD block have?
The DDA804 A-63/0.3 has a rated residual operating current of 300 mA.
What does Type A residual-current protection detect?
Type A protection detects sinusoidal alternating residual currents and pulsating DC residual currents, providing protection for a broad range of modern electrical loads.
Where is the ABB DDA804 A-63/0.3 typically used?
It is typically used in commercial and industrial electrical distribution systems, particularly on three-phase circuits with neutral where residual-current protection is required alongside a compatible ABB S800 miniature circuit breaker.
Trusted Residual-Current Protection from ABB
ABB DDA800 residual current device blocks provide dependable earth-fault protection for commercial and industrial electrical systems, combining with compatible S800 series miniature circuit breakers to create robust residual-current and overcurrent protection solutions.
