Why Choose the ABB DDA203 AC-40/0.03 Residual Current Device Block?
The ABB DDA203 AC-40/0.03 (Product ID: 2CSB203001R1400) is a high-quality 3-pole Residual Current Device (RCD) block from ABB's trusted DDA200 series. Designed for use with compatible ABB S200 series miniature circuit breakers, it converts a standard MCB into an RCBO-style solution by providing reliable residual current protection against earth leakage faults. It is rated at 40 A with a 30 mA residual operating current for additional protection against electric shock.
This Type AC RCD block detects sinusoidal alternating earth fault currents, making it suitable for conventional AC circuits in residential, commercial and light industrial installations. When combined with an ABB S200 series MCB, it provides both overcurrent and earth leakage protection within a compact DIN rail assembly.
Manufactured to ABB's exacting quality standards, the DDA203 AC-40/0.03 complies with IEC/EN 61009 Annex G and is designed for straightforward installation alongside compatible S200, S200M and S300P circuit breakers.
Key Advantages
- Converts compatible ABB MCBs into combined overcurrent and residual current protection devices.
- 40 A rated current.
- 30 mA residual operating current for additional personal protection.
- Type AC sensitivity for sinusoidal alternating residual currents.
- Suitable for residential, commercial and industrial applications.
- Simple DIN rail installation with compatible ABB S200 series MCBs.
Key Features
- ABB DDA203 AC-40/0.03 residual current device block.
- Product ID: 2CSB203001R1400.
- 3-pole configuration.
- 40 A rated current.
- 30 mA residual trip sensitivity.
- Type AC residual current detection.
- 230/400 V AC operation.
- 50/60 Hz rated frequency.
- DIN rail mounting.
- Compatible with ABB S200, S200M and S300P series MCBs.
Reliable Residual Current Protection
The ABB DDA203 AC-40/0.03 continuously monitors the current flowing through all conductors. Should an earth leakage current reach 30 mA, the device rapidly disconnects the circuit, helping protect people from electric shock and reducing the risk of fire caused by insulation faults. When paired with an ABB S200 series MCB, it provides a comprehensive protection solution in a compact assembly.
Typical Applications
- Commercial distribution boards.
- Residential consumer units.
- Industrial control panels.
- Building services installations.
- Three-phase AC distribution circuits.
- General electrical protection against earth leakage faults.
