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2CSB204101R3250 ABB DDA204 A-25/0.3 RCD 4P A 300mA 25A
ABB DDA204 A-25/0.3 is a 4-pole Type A RCD block rated at 25 A with a 300 mA residual operating current for residual current protection in compatible three-phase electrical distribution systems.
£94.43
Why Choose the ABB DDA204 A-25/0.3 RCD Block?
The ABB DDA204 A-25/0.3 is a reliable 4-pole Type A residual current device (RCD) block designed to provide residual current protection when assembled with a compatible ABB miniature circuit breaker. As part of the established ABB DDA200 RCD series, it responds to both sinusoidal alternating and pulsating DC residual currents, making it suitable for electrical installations containing conventional and electronic loads.
Designed for coupling with compatible ABB modular circuit breakers, the DDA204 A-25/0.3 enables residual current protection to be combined with the overcurrent and short-circuit protection provided by the associated breaker. Its four-pole configuration makes it suitable for compatible three-phase electrical distribution systems incorporating a neutral conductor.
With a rated current of 25 A, a rated residual operating current of 300 mA and a rated voltage of 230/400 V AC, the DDA204 A-25/0.3 provides dependable earth leakage protection for suitable residential, commercial and industrial distribution applications requiring Type A residual current detection.
Key Advantages
- Reliable Type A residual current protection for four-pole electrical circuits.
- 25 A rated current for suitable electrical distribution applications.
- 300 mA rated residual operating current.
- Detection of sinusoidal AC and pulsating DC residual currents.
- 4-pole configuration suitable for compatible three-phase systems incorporating neutral.
- Designed for coupling with compatible ABB miniature circuit breakers.
Key Features
- ABB DDA200 RCD series.
- 4-pole Type A RCD block.
- 25 A rated current.
- 300 mA rated residual current.
- Type A residual current characteristic.
- 230/400 V AC rated voltage.
- 50–60 Hz rated frequency.
- 500 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Detection of sinusoidal alternating and pulsating DC residual currents.
- Modular construction for combination with compatible ABB circuit breakers.
Dependable Type A Residual Current Protection
Type A residual current protection is designed to respond to both sinusoidal alternating residual currents and pulsating direct residual currents. This makes the ABB DDA204 A-25/0.3 suitable for many modern electrical installations where electronic components, rectifier circuits and other loads may produce residual current waveforms beyond purely sinusoidal AC.
When assembled with a compatible ABB miniature circuit breaker, the DDA204 A-25/0.3 provides residual current protection alongside the overcurrent and short-circuit protection of the associated breaker. Its 300 mA residual current rating makes it suitable for appropriately designed distribution and earth leakage protection applications where this sensitivity is specified.
Typical Applications
- Three-phase electrical distribution systems incorporating neutral.
- Commercial building distribution boards.
- Industrial electrical panels and switchboards.
- Residential and multi-occupancy distribution systems.
- Circuits containing conventional and electronic electrical equipment.
- Circuits requiring 300 mA Type A residual current protection.
Technical Specifications
| Series | DDA200 RCD |
|---|---|
| ABB order code | 2CSB204101R3250 |
| Product type | Residual current device (RCD) block |
| Residual current type | Type A |
| Number of poles | 4 |
| Rated current | 25 A |
| Rated residual current | 300 mA |
| Rated voltage | 230/400 V AC |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 4 kV |
| Rated frequency | 50–60 Hz |
| Residual current detection | Sinusoidal AC and pulsating DC |
| Operating characteristic | Instantaneous |
| Standard | IEC/EN 61009 Ann. G |
| Mounting arrangement | Coupled with compatible ABB modular circuit breaker |
Frequently Asked Questions
What is the ABB DDA204 A-25/0.3 used for?
The DDA204 A-25/0.3 is a 4-pole Type A residual current device block designed to provide residual current protection when assembled with a compatible ABB miniature circuit breaker.
What is the rated current of the DDA204 A-25/0.3?
The ABB DDA204 A-25/0.3 has a rated current of 25 A.
What is the residual current rating?
The DDA204 A-25/0.3 has a rated residual operating current of 300 mA.
What does Type A mean on the DDA204 A-25/0.3?
Type A means the RCD block is designed to respond to both sinusoidal alternating residual currents and pulsating DC residual currents, making it suitable for many installations containing modern electrical and electronic equipment.
Why does the ABB DDA204 A-25/0.3 have four poles?
The 4-pole configuration enables the device to monitor four conductors, making it suitable for compatible three-phase electrical distribution systems incorporating a neutral conductor.
Trusted ABB Electrical Protection
ABB DDA200 residual current blocks provide a modular approach to electrical protection, combining with compatible ABB circuit breakers to support dependable residual current, overcurrent and short-circuit protection in residential, commercial and industrial installations.
