ABB Residual Current Device RCD DDA 800 – Excellent Modular Earth Fault Protection for S800 MCB Series

Description

ABB Residual Current Device RCD DDA 800 – Excellent Modular Earth Fault Protection for S800 MCB Series

The ABB RCD DDA 800 Residual Current Block is the definitive, high-performance solution for creating a customizable earth fault protection system in demanding electrical distribution environments.

It is specifically engineered to pair seamlessly with the S800 series of MCBs (S800P, S800S, S800N, S800C, S800B), enabling robust protection in a compact modular format.

Key Technical Advantages and Features:

• Versatile Protection: Available in Type AC, A, A AP-R, and A S, providing safety against standard sinusoidal faults as well as direct pulsating earth leakage currents.
• High Immunity & Selectivity: Includes A AP-R (High Immunity) models with 3000A surge resistance to prevent nuisance tripping, and A S (Selective) models with an exceptional 5000A surge resistance and intentional time-delay for selective coordination in complex circuits.
• Industrial Power Rating: Offers high capacity with rated currents of 63A and 100A in 2-pole, 3-pole, and 4-pole configurations.
• Durability and Standards: Built for longevity with 10,000 electrical cycles and fully compliant with IEC/EN 60947-2 Ann. B standard.

The DDA 800 Earth Leakage Protection Block is the professional choice for secure and sustained power distribution up to 690V.