ABB DDA204 AC-40/0.1 RCD Block

Precision Earth Fault Protection for MCB Integration

The ABB DDA204 AC-40/0.1 is a high-performance RCD (Residual Current Device) block from the DDA200 series, specifically designed for seamless assembly with ABB’s S200 and S300P MCB series. Built to enhance electrical safety, it offers reliable protection against earth fault currents, indirect contact hazards, and—at 30 mA sensitivity—additional safety against direct contacts. This RCD block ensures stable performance across residential, commercial, and industrial environments.

Key Features at a Glance

• Product Type: RCD Block for MCBs (DDA200 series)

• Model: DDA204 AC-40/0.1

• Rated Current: 40 A

• Rated Residual Current: 100 mA

• Rated Voltage: 230/400 V AC

• Rated Insulation Voltage: 500 V

• Impulse Withstand Voltage: 4 kV

• Frequency: 50–60 Hz

• Short-Circuit Current Rating (SCCR): 0.1 A

• Power Loss: 4.8 W

• Assembly Compatibility: ABB S200 and S300P MCBs

• Made in: Italy

Ideal For

• Residential Buildings

• Commercial Facilities

• Light and Heavy Industrial Applications

• Panel Builders & Electrical Contractors

• Maintenance and Repair Operations (MRO)