Eaton DCU1065UPM Heavy Duty DC Disconnect - NEMA 4

Rugged enclosure and weather-ready design support outdoor PV installations. The painted galvanized steel, NEMA 4 enclosure protects against dust, water, ice, and environmental contaminants, dramatically reducing corrosion-related maintenance and unexpected downtime in harsh outdoor environments. This makes the DCU1065UPM ideal for solar sites on rooftops, carports, and ground-mounted arrays where reliable service life is essential. The enclosure’s robust build also simplifies field approvals by providing a familiar, compliant footprint for mounting and service access.High-current capability translates to fewer disconnects and simplified DC wiring. With a 400 A amperage rating and a single circuit, engineers can consolidate PV strings, reducing junction points and overall wiring complexity. The non-fusible design enhances safety by avoiding accidental fuse failures and supports straightforward fault isolation during routine maintenance or in the event of a fault. This translates into quicker commissioning and reduced labor costs.Voltage and protection specifics improve safety and compliance. The unit handles up to 600 VDC per pole and 600 VDC system voltage, with non-fusible protection for clean, predictable disconnection in ungrounded PV systems. The heavy-duty switch type and ungrounded configuration align with solar industry practices, enabling safe operation in PV installations and providing the reliability needed for long service lifetimes.Installation and maintenance efficiency. UL Listed certification confirms conformity to recognized safety standards, while Eaton's warranty provides coverage during the critical early period. The product dimensions—12.42 in depth, 24.12 in width, and 57.47 in height—and 110 lb weight indicate a substantial unit designed for secure mounting in electrical rooms or outdoor enclosures. Quick-connect hardware and standardized mounting patterns simplify retrofits and new installations alike.Industry relevance and compatibility. This DC Photovoltaic Applications series is designed for solar arrays and ungrounded DC systems, offering straightforward integration with typical Eaton components and compatible switchgear. The DCU1065UPM supports scalable deployments from small commercial rooftops to utility-scale projects, enabling faster commissioning, predictable system behavior, and improved uptime across the solar lifecycle.