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2CSB203101R1400 ABB DDA203A400.03 DDA203 A-40/0.03 RCD Block 3P Type A 40 A 30 mA
ABB DDA203A400.03 DDA203 A-40/0.03 is a 3-pole 40 A 30 mA Type A residual current device block for detecting sinusoidal AC and pulsating DC residual currents with compatible ABB miniature circuit breakers.
£93.55
Why Choose the ABB DDA203A400.03 Residual Current Device Block?
The ABB DDA203A400.03, manufacturer type DDA203 A-40/0.03, is a 3-pole Type A residual current device (RCD) block designed for combination with compatible ABB miniature circuit breakers. Part of the ABB DDA200 RCD series, it provides sensitive residual-current protection for three-phase electrical distribution circuits in commercial and industrial installations.
The DDA203 A-40/0.03 is designed to detect both sinusoidal AC and pulsating DC residual currents. This Type A characteristic makes it suitable for circuits supplying equipment with electronic components that may generate pulsating DC earth-leakage currents in addition to conventional alternating residual currents.
With a rated current of 40 A, a rated residual operating current of 30 mA and a 3-pole configuration, the DDA203A400.03 provides sensitive earth-leakage detection for suitable three-phase circuits. When assembled with a compatible ABB miniature circuit breaker, it forms a coordinated modular solution providing residual-current, overload and short-circuit protection.
Key Advantages
- Type A residual-current protection for AC and pulsating DC residual currents.
- 30 mA sensitivity for sensitive residual-current detection.
- 40 A rated current for compatible three-phase circuits.
- 3-pole configuration for suitable three-phase applications.
- Suitable for circuits containing electrical and electronic equipment.
- Designed for combination with compatible ABB miniature circuit breakers.
- Enables residual-current protection to be combined with overload and short-circuit protection.
Key Features
- ABB DDA200 residual current device block series.
- Type A residual-current characteristic.
- 40 A rated current.
- 30 mA rated residual operating current.
- 3 poles.
- Detection of sinusoidal AC and pulsating DC residual currents.
- Modular construction for use with compatible ABB miniature circuit breakers.
- Suitable for commercial and industrial three-phase electrical distribution.
Reliable Type A Protection for Three-Phase Circuits
Type A residual-current protection responds to sinusoidal alternating residual currents as well as pulsating DC residual currents. This broader detection capability makes the ABB DDA203 A-40/0.03 suitable for electrical installations where electronic components, rectifier circuits and other modern loads can produce residual-current waveforms beyond those covered by Type AC protection.
The 30 mA operating sensitivity provides sensitive earth-leakage detection, while the DDA200 modular design allows the RCD block to be combined with a compatible ABB miniature circuit breaker. The resulting assembly provides residual-current protection together with overload and short-circuit protection for suitable three-phase circuits.
Typical Applications
- Three-phase commercial electrical distribution systems.
- Industrial electrical installations.
- Distribution boards and sub-distribution panels.
- Electrical control and automation panels.
- Circuits containing electronic equipment capable of producing pulsating DC residual currents.
- Three-phase circuits requiring 30 mA Type A residual-current protection.
- Assemblies using compatible ABB miniature circuit breakers.
Technical Specifications
| Series | DDA200 |
|---|---|
| SKU | DDA203A400.03 |
| ABB order code | 2CSB203101R1400 |
| Product type | Residual current device block / RCD block |
| Residual-current type | Type A |
| Number of poles | 3 |
| Rated current | 40 A |
| Rated residual operating current | 30 mA |
| Rated frequency | 50–60 Hz |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 4 kV |
| Protection rating | IP2X |
| Standard | IEC/EN 61009 Annex G |
Frequently Asked Questions
What is the ABB DDA203A400.03 used for?
The ABB DDA203A400.03 is a 3-pole Type A RCD block designed for combination with compatible ABB miniature circuit breakers to provide sensitive residual-current protection for suitable three-phase electrical circuits.
What is the rated current of the DDA203 A-40/0.03?
The ABB DDA203 A-40/0.03 has a rated current of 40 A.
What is the residual-current sensitivity of the DDA203A400.03?
The DDA203A400.03 has a rated residual operating current of 30 mA.
What does Type A mean on the ABB DDA203A400.03?
Type A means the device is designed to detect both sinusoidal alternating and pulsating DC residual currents, making it suitable for many circuits containing modern electronic equipment.
How many poles does the ABB DDA203A400.03 have?
The DDA203A400.03 is a 3-pole residual current device block intended for suitable three-phase circuit arrangements.
Trusted ABB Type A Circuit Protection
ABB DDA200 Type A residual current device blocks provide modular protection against AC and pulsating DC earth-leakage currents, supporting dependable three-phase circuit protection in commercial and industrial electrical installations.
