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2CSB202101R4400 ABB DDA202 A-40/0.5 RCD Block 2P 40 A 500 mA Type A
ABB DDA202 A-40/0.5 is a 2-pole Type A residual current device block rated at 40 A with 500 mA sensitivity for AC and pulsating DC residual-current protection.
£84.31
Why Choose the ABB DDA202 A-40/0.5 RCD Block?
The ABB DDA202 A-40/0.5 is a reliable 2-pole Type A residual current device (RCD) block designed to provide residual-current protection when assembled with compatible ABB miniature circuit breakers. As part of the ABB DDA200 RCD series, it is suitable for residential, commercial and industrial electrical installations requiring detection of both sinusoidal AC and pulsating DC residual currents.
This RCD block has a 500 mA rated residual current and a 40 A rated current. Its Type A characteristic makes it suitable for circuits containing electronic equipment capable of producing pulsating DC earth leakage currents, while the modular DDA200 design allows residual-current protection to be combined with the overload and short-circuit protection provided by a compatible ABB miniature circuit breaker.
With its 2-pole configuration and 230/400 V AC rated voltage, the DDA202 A-40/0.5 provides a compact protection solution for electrical distribution systems. Its modular construction enables straightforward integration into distribution boards and control panels where coordinated residual-current and overcurrent protection is required.
Key Advantages
- Reliable Type A residual-current protection for AC and pulsating DC residual currents.
- 500 mA rated residual current for earth leakage and installation protection applications.
- 40 A rated current suitable for a wide range of electrical distribution circuits.
- 2-pole configuration suitable for single-phase circuit protection arrangements.
- Designed for assembly with compatible ABB miniature circuit breakers.
- Type A technology is suitable for many circuits supplying equipment containing electronic components.
Key Features
- ABB DDA200 RCD series.
- 2-pole Type A RCD block.
- 40 A rated current.
- 500 mA rated residual current.
- 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 AC and pulsating DC residual currents.
- Modular design for combination with compatible ABB miniature circuit breakers.
Type A Residual-Current Protection for Modern Electrical Loads
Type A residual current protection detects sinusoidal alternating residual currents as well as pulsating direct residual currents. This makes the ABB DDA202 A-40/0.5 suitable for circuits supplying equipment containing electronic components, where residual-current waveforms may differ from the purely sinusoidal currents detected by Type AC devices.
The DDA200 system allows the residual-current block to be assembled with a compatible ABB miniature circuit breaker, combining residual-current detection with the overload and short-circuit protection provided by the associated MCB. This modular approach provides coordinated circuit protection while supporting efficient installation within electrical distribution boards.
Typical Applications
- Residential electrical distribution systems.
- Commercial building electrical installations.
- Industrial electrical distribution boards.
- Circuits requiring 500 mA residual-current protection.
- Circuits supplying equipment containing electronic components.
- Earth leakage and insulation fault protection applications.
- Electrical control panels and modular distribution equipment.
Technical Specifications
| Series | DDA200 |
|---|---|
| SKU | DDA202A400.5 |
| Order code | 2CSB202101R4400 |
| Product type | Residual current device (RCD) block |
| Residual-current type | Type A |
| Number of poles | 2 |
| Rated current | 40 A |
| Rated residual current | 500 mA |
| Rated voltage | 230/400 V AC |
| Rated operational voltage | 230 V AC |
| Rated frequency | 50/60 Hz |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 4 kV |
| Residual-current waveform | Sinusoidal AC and pulsating DC |
| Standard | IEC/EN 61009 Annex G |
| Operating ambient temperature | -25 to +55 °C |
| Conductor connection capacity | up to 25 mm² |
| Dimensions (H × W × D) | 93 × 70 × 76 mm |
| Weight | approx. 0.21 kg |
Frequently Asked Questions
What is the ABB DDA202 A-40/0.5 used for?
The DDA202 A-40/0.5 is an RCD block designed for assembly with a compatible ABB miniature circuit breaker to provide residual-current protection in residential, commercial and industrial electrical installations.
What is the rated current of the DDA202 A-40/0.5?
The ABB DDA202 A-40/0.5 has a rated current of 40 A.
What residual-current sensitivity does the DDA202 A-40/0.5 provide?
The device has a rated residual current of 500 mA, making it suitable for earth leakage and installation protection applications requiring this sensitivity.
What does Type A mean on the DDA202 A-40/0.5?
Type A means the RCD block is designed to detect both sinusoidal alternating residual currents and pulsating direct residual currents, making it suitable for many circuits containing electronic equipment.
Is the DDA202 A-40/0.5 a complete RCBO on its own?
No. The DDA202 A-40/0.5 is an RCD block designed to be assembled with a compatible ABB miniature circuit breaker, which provides the associated overload and short-circuit protection.
Trusted ABB Circuit Protection
ABB DDA200 residual current device blocks provide modular residual-current protection for residential, commercial and industrial electrical installations, combining with compatible ABB circuit breakers to create coordinated circuit protection assemblies.
