Dda800

DDA800 Molded Case Circuit Breakers (MCCBs) – Technical Overview and Global Supply

Block 1: Technical Introduction
DDA800 series molded case circuit breakers (MCCBs) are high-performance protective devices designed for industrial and commercial electrical distribution systems. These three-pole (3P) and four-pole (4P) units offer rated currents from 800 A up to 1600 A, with breaking capacities up to 65 kA at 415 V AC, ensuring robust short-circuit protection. The DDA800 family features adjustable thermal-magnetic or electronic trip units, allowing precise coordination with downstream equipment. Rated operational voltages cover 690 V AC and 500 V DC, making them suitable for diverse global installations. The compact design supports fixed, plug-in, or draw-out mounting configurations, with optional accessories like shunt trips, undervoltage releases, and auxiliary contacts for remote monitoring. These breakers comply with IEC 60947-2 and UL 489 standards, ensuring reliability in critical applications.

Block 2: Applications and Sectors
DDA800 MCCBs are primarily deployed in main distribution boards (MDBs), sub-distribution panels, and motor control centers (MCCs) within heavy industries such as manufacturing, mining, oil and gas, and data centers. They serve as incoming feeders or large motor protection in systems requiring high fault tolerance. Their adjustable trip settings make them ideal for selective coordination in complex networks, minimizing downtime during faults. Additionally, they are used in renewable energy installations, including solar farms and wind turbines, where high DC voltage ratings are essential.

Block 3: Subcategories and Key Articles
The DDA800 series includes several subcategories based on breaking capacity and trip unit type. Key article codes include DDA800-3P-800A (standard breaking capacity, 800 A), DDA800-4P-1000A (high breaking capacity, 1000 A), and DDA800-3P-1600A (with electronic trip unit). The code structure typically follows: DDA800-[Poles]-[Rated Current]-[Trip Type], where 'Poles' is 3P or 4P, 'Rated Current' is in amperes (e.g., 800, 1000, 1250, 1600), and 'Trip Type' is 'TM' for thermal-magnetic or 'EL' for electronic. Accessories like the DDA800-AUX (auxiliary contact) and DDA800-SHT (shunt trip) are available separately.

Block 4: Business Benefits and Support
Electric Automation Network offers DDA800 breakers at competitive prices with up to 65% discount compared to list prices. We provide express worldwide shipping, typically within 24-48 hours, ensuring minimal project delays. Our team of specialized electrical engineers offers personalized technical support, including trip curve selection, coordination studies, and documentation in multiple languages. Each article includes detailed datasheets and CAD drawings for seamless integration.