✅ ABB DDA202 AC – 2P Residual Current Device (RCD) 25A (Part No.: 2CSB202001R1250) The ABB DDA202 AC is a two-pole residual current device rated at 25A, designed to detect AC-type earth leakage currents in residential and commercial setups. Technical Specifications: Part Number: 2CSB202001R1250 Model: DDA202 AC Rated Current: 25A Type: Residual Current Device (RCD, AC type) Poles: 2P Applications: Distribution boards, consumer units Mounting: DIN rail