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

Why Choose This Product
If you’re looking for a dependable solution for earth fault protection that integrates effortlessly with ABB’s MCB ranges, the DDA204 AC-40/0.1 is a solid pick. Designed to meet the safety demands of modern electrical installations, it provides peace of mind with its superior residual current detection and high insulation performance. It’s compact, efficient, and ideal for retrofit or new installations where space and reliability are key.

Ideal For

• Residential Buildings

• Commercial Facilities

• Light and Heavy Industrial Applications

• Panel Builders & Electrical Contractors

• Maintenance and Repair Operations (MRO)

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