Eaton DCU1065UXM DC disconnect - NEMA 4X
Part Number: DCU1065UXM
Quick Summary
Eaton DCU1065UXM is a heavy-duty DC disconnect designed for solar PV systems. It provides reliable isolation in ungrounded DC networks, helping prevent arc-flash risks and streamline maintenance workflows. UL Listed with a NEMA 4X enclosure and 316 stainless steel construction, it resists corrosion and weathering in outdoor installations. This solution supports straightforward wiring, quick field inspection, and favorable total-cost-of-ownership for PV projects. By combining rugged construction with industry-grade protection, it aligns with safety and reliability standards essential for modern solar power systems.
Product Information
Extended Description
DCU1065UXM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,400A,NEMA 4X,Grade 316 stainless steel,Non-fusible,Ungrounded,600 Vdc,1,DC Photovoltaic Applications
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1065UXM
UPC
786685865874
Product Length/Depth
12.42 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
110 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Type
DC disconnect/ungrounded system
Amperage Rating
400 A
Number of circuits
1
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 4X
Protection
Non-fusible
Application
Solar
System voltage
600 VDC per pole
Voltage rating
600 VDC
Series
DC Photovoltaic Applications
Enclosure
NEMA 4X
Enclosure material
316 stainless steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - DCU1065UXM
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 400 A, non-fusible, ungrounded DC disconnect provides a single-pole isolation point for high-current solar DC circuits. Business Impact: safer maintenance, reduced downtime, and easier compliance with protection requirements. Application: ideal for solar PV installations requiring robust, non-fused DC isolation. Feature: NEMA 4X enclosure in 316 stainless steel delivers superior outdoor durability. Business Impact: enhanced weather resistance and corrosion protection, lowering service calls and replacement costs. Application: rooftop and outdoor substations exposed to the elements. Feature: Generous footprint with 12.42 in depth, 57.47 in height, and 24.12 in width supports reliable installation in field cabinets. Business Impact: predictable fit and simplified space planning, reducing site rework. Application: DC power distribution enclosures in industrial facilities. Feature: UL Listed and overall rugged build support compliance and safer operations. Business Impact: quicker project approvals and lower risk of non-conformance. Application: regulated industrial environments and solar installations requiring formal certification. Feature: 600 VDC per pole, 1 circuit configuration enables scalable solar power layouts while maintaining a non-fusible, ungroun ded system. Business Impact: flexibility for PV array configurations, straightforward upgrade paths, and robust protection against faults. Application: solar PV applications with 600 VDC systems and ungrounded configurations.
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FAQs
The DCU1065UXM provides a single 400 A, non-fusible disconnect for ungrounded DC circuits rated up to 600 VDC per pole. Ensure mounting complies with NEMA 4X requirements, provide adequate ventilation clearance, and plan for wiring access to the 1-pole enclosure. Verify compatibility with existing DC power distribution layouts and confirm that labeling and lockout procedures meet site safety standards.
A 400 A rating supports sizable PV strings or combiner outputs, while 600 VDC per pole sets the maximum system voltage per disconnect. This enables flexible array configurations and straightforward isolation points without sacrificing safety. When designing the layout, ensure conductor sizing, insulation ratings, and overcurrent protection align with these specifications to maintain compliant and reliable operation.
Yes. The unit features a NEMA 4X enclosure and a 316 stainless steel body, delivering excellent outdoor durability and corrosion resistance. This makes it appropriate for rooftop and other exposed environments in solar installations. Maintain standard outdoor installation practices, including weatherproof conduit fittings and secure mounting to withstand wind load and temperature variations.
The DCU1065UXM is UL Listed and enclosed in a NEMA 4X-rated housing, with 316 stainless steel construction. UL Listing confirms compliance with recognized safety standards, while NEMA 4X ensures protection against water, dust, and corrosion in outdoor settings. Together, these certifications support safer operation, easier regulatory approvals, and reduced risk during inspection and maintenance.
Eaton backs the DCU1065UXM with a warranty aligned to distribution and control product policy, typically offering a one-year coverage from installation or eighteen months from shipment, whichever occurs first. For maintenance, inspect enclosure integrity, monitor connection tightness, and verify labeling and isolation functionality during routine preventive maintenance to maximize lifecycle performance.