✅ ABB DDA204 AC – 4P Residual Current Device (RCD) 25A (Part No.: 2CSB204001R3250) The ABB DDA204 AC 25A RCD offers high-level AC-type fault protection in four-pole applications, ensuring safety for large electrical installations. Technical Specifications: Part Number: 2CSB204001R3250 Model: DDA204 AC Rated Current: 25A Type: Residual Current Device (RCD, AC type) Poles: 4P Applications: Sub-distribution, commercial buildings Mounting: DIN rail