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2CSB203101R2250 ABB DDA203A250.1 DDA203 A-25/0.1 RCD Block 3P Type A 25 A 100 mA
ABB DDA203A250.1 DDA203 A-25/0.1 is a 3-pole 25 A 100 mA Type A residual current device block for detecting sinusoidal AC and pulsating DC residual currents with compatible ABB miniature circuit breakers.
£98.74
Why Choose the ABB DDA203A250.1 Residual Current Device Block?
The ABB DDA203A250.1, manufacturer type DDA203 A-25/0.1, 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 residual-current protection for suitable three-phase electrical distribution circuits in commercial and industrial installations.
The DDA203 A-25/0.1 is designed to detect both sinusoidal AC and pulsating DC residual currents. This Type A characteristic makes it suitable for circuits containing modern electrical and electronic equipment that may produce pulsating DC earth-leakage currents as well as conventional alternating residual currents.
With a rated current of 25 A, a rated residual operating current of 100 mA and a 3-pole configuration, the DDA203A250.1 provides dependable earth-leakage detection for suitable three-phase circuits. When assembled with a compatible ABB miniature circuit breaker, it creates a coordinated modular solution incorporating residual-current, overload and short-circuit protection.
Key Advantages
- Type A residual-current protection for sinusoidal AC and pulsating DC residual currents.
- 25 A rated current for compatible three-phase circuits.
- 100 mA rated residual operating current.
- 3-pole configuration for suitable three-phase applications.
- Suitable for circuits containing modern 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.
- 25 A rated current.
- 100 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 detection capability makes the ABB DDA203 A-25/0.1 suitable for electrical installations containing electronic components and rectifier-based loads that can produce residual-current waveforms requiring Type A protection.
The 100 mA residual-current operating threshold supports earth-fault protection in suitable distribution applications. The DDA200 modular design allows the RCD block to be combined with a compatible ABB miniature circuit breaker, providing residual-current protection together with overload and short-circuit protection in a coordinated assembly.
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 100 mA Type A residual-current protection.
- Assemblies using compatible ABB miniature circuit breakers.
Technical Specifications
| Series | DDA200 |
|---|---|
| SKU | DDA203A250.1 |
| ABB order code | 2CSB203101R2250 |
| Product type | Residual current device block / RCD block |
| Residual-current type | Type A |
| Number of poles | 3 |
| Rated current | 25 A |
| Rated residual operating current | 100 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 DDA203A250.1 used for?
The ABB DDA203A250.1 is a 3-pole Type A RCD block designed for combination with compatible ABB miniature circuit breakers to provide residual-current protection for suitable three-phase electrical circuits.
What is the rated current of the DDA203 A-25/0.1?
The ABB DDA203 A-25/0.1 has a rated current of 25 A.
What is the residual-current sensitivity of the DDA203A250.1?
The DDA203A250.1 has a rated residual operating current of 100 mA.
What does Type A mean on the ABB DDA203A250.1?
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 DDA203A250.1 have?
The DDA203A250.1 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.
