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2CSB203101R5250 ABB DDA203 A-25/1 RCD 3P A 1000mA 25A
ABB DDA203 A-25/1 is a 3-pole Type A RCD block rated at 25 A with a 1000 mA residual operating current and 230/400 V AC rating for use with compatible ABB circuit breakers.
£89.71
Why Choose the ABB DDA203 A-25/1 RCD Block?
The ABB DDA203 A-25/1 is a reliable 3-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 established ABB DDA200 RCD series, it provides protection against sinusoidal alternating and pulsating DC earth fault currents in residential, commercial and industrial electrical installations.
Designed for assembly with compatible ABB S200 series miniature circuit breakers and S300P devices, the DDA203 A-25/1 enables residual current protection to be combined with the overcurrent and short-circuit protection provided by the associated circuit breaker. Its Type A characteristic makes it suitable for circuits where both sinusoidal AC and pulsating DC residual currents may occur.
With a rated current of 25 A, a rated residual operating current of 1000 mA (1 A) and a rated voltage of 230/400 V AC, the DDA203 A-25/1 is designed for three-phase electrical distribution applications requiring dependable earth leakage protection. Its modular construction enables straightforward integration into suitable electrical distribution boards and control panels.
Key Advantages
- Reliable residual current protection for three-phase electrical circuits.
- 25 A rated current for suitable residential, commercial and industrial applications.
- 1000 mA (1 A) rated residual operating current.
- Type A detection for sinusoidal alternating and pulsating DC residual currents.
- Designed for assembly with compatible ABB S200 series miniature circuit breakers.
- Modular design supports convenient integration into electrical distribution systems.
Key Features
- ABB DDA200 RCD series.
- 3-pole RCD block for three-phase applications.
- 25 A rated current.
- 1000 mA (1 A) rated residual current.
- Type A residual current characteristic.
- 230/400 V AC rated voltage.
- 500 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Instantaneous operating characteristic.
- Designed for assembly with compatible ABB modular circuit breakers.
Reliable Type A Residual Current Protection
Residual current devices monitor electrical circuits for current imbalances caused by leakage to earth. The ABB DDA203 A-25/1 uses a Type A residual current characteristic, allowing it to respond to both sinusoidal alternating residual currents and pulsating direct residual currents that can occur in installations containing modern electrical and electronic equipment.
The ABB DDA200 range is designed for assembly with compatible ABB modular circuit breakers. When combined with a suitable circuit breaker, the RCD block provides residual current protection alongside the overcurrent and short-circuit protection of the associated breaker, creating a compact protection solution for electrical distribution systems.
Typical Applications
- Three-phase electrical distribution systems.
- Industrial electrical panels and switchboards.
- Commercial building distribution boards.
- Residential electrical distribution systems.
- Machinery and equipment supply circuits.
- Circuits requiring 1000 mA Type A residual current protection.
Technical Specifications
| Series | DDA200 RCD |
|---|---|
| ABB order code | 2CSB203101R5250 |
| EAN | 8012542809104 |
| Product type | Residual current device (RCD) block |
| Residual current type | Type A |
| Number of poles | 3 |
| Rated current | 25 A |
| Rated residual current | 1000 mA (1 A) |
| Rated voltage | 230/400 V AC |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 4 kV |
| Operating characteristic | Instantaneous |
| Standard | IEC/EN 61009 Ann. G |
| Operating ambient temperature | -25 to +55 °C |
| Power loss | 3 W |
| Dimensions (W × H × D) | 87 × 93 × 69 mm |
| Net weight | approx. 0.158 kg |
Frequently Asked Questions
What is the ABB DDA203 A-25/1 used for?
The DDA203 A-25/1 is a 3-pole residual current device block designed to provide residual current protection when assembled with a compatible ABB miniature circuit breaker in three-phase electrical installations.
What is the rated current of the DDA203 A-25/1?
The ABB DDA203 A-25/1 has a rated current of 25 A.
What is the residual current rating?
The DDA203 A-25/1 has a rated residual operating current of 1000 mA (1 A).
What does Type A mean on this RCD block?
Type A means the device is designed to respond to both sinusoidal alternating residual currents and pulsating direct residual currents.
What voltage is the ABB DDA203 A-25/1 rated for?
The ABB DDA203 A-25/1 has a rated voltage of 230/400 V AC, making it suitable for compatible three-phase electrical distribution applications.
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 and overcurrent protection in residential, commercial and industrial installations.
