Eaton DCU1065UWM DC Disconnect - Heavy Duty 400A, NEMA 4X
Part Number: DCU1065UWM
Quick Summary
The DCU1065UWM heavy duty DC disconnect provides safe, ungrounded isolation for solar PV installations up to 600 VDC. Too often, engineers face corrosion, weather exposure, or compliance gaps when selecting outdoor DC protection. UL Listed and NEMA 4X-rated enclosures, plus a 304 stainless steel build, help you meet industry and safety requirements. By combining robust protection with straightforward installation, this solution supports solar deployments, reduces maintenance, and speeds time-to-operational.
Product Information
Extended Description
DCU1065UWM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,400A,NEMA 4X,Grade 304 stainless steel,Non-fusible,Ungrounded,600 Vdc,1,DC Photovoltaic Applications
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1065UWM
UPC
786685865850
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
304 stainless steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Feature: 400 A, 1 circuit, non-fusible DC disconnect. Business Impact: Delivers reliable isolation with simplified protection and reduced arc-flash risk, enabling safer routine maintenance and faster fault response. Application: Solar PV systems with configurations up to 600 VDC per pole. The design minimizes downtime and simplifies system uptime tracking. Feature: NEMA 4X enclosure in 304 stainless steel. Business Impact: Excellent corrosion resistance in outdoor or harsh environments, reducing maintenance costs and extending service life. Application: Rooftop and ground-mounted solar installations exposed to dust, rain, or salt spray. Feature: Ungrounded system with 600 VDC maximum per pole. Business Impact: Simplifies grounding strategies while maintaining high protection margins, improving installer confidence. Application: DC photovoltaic applications with standardized DC conductors and service procedures. Feature: UL Listed and NEMA 4X certification. Business Impact: Low procurement risk and easier regulatory compliance for utility-scale and industrial solar projects. Application: Commercial and industrial facilities needing proven safety standards. Feature: 304 stainless steel enclosure, weight 110 lb, and dimensions 12.42 in (depth) × 57.47 in (height) × 24.12 in (width). Business Impact: Robust, fit-for-purpose footprint that supports stable mounting and predictable maintenance cycles, reducing installation planning time. Application: Outdoor placements requiring durable construction and consistent performance.
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FAQs
DCU1065UWM is designed for outdoor solar DC circuits, offering a 400 A rating with a single circuit, and a 600 VDC maximum per pole. It features a NEMA 4X-rated, 304 stainless steel enclosure for corrosion resistance, UL Listed safety certification, and a non-fusible, ungrounded configuration to simplify system protection and maintenance in harsh environments.
The unit is UL Listed and comes in a NEMA 4X enclosure. Constructed from 304 stainless steel, it provides corrosion resistance suitable for outdoor installations. These certifications support regulatory compliance for solar PV projects and industrial electrical protection applications, reducing procurement risk and helping pass safety audits.
Best suited for solar DC photovoltaic applications, including rooftop and ground-mounted PV arrays. It supports up to 600 VDC system voltages per pole and 400 A, with a non-fusible protection scheme. Its rugged enclosure and corrosion resistance make it a reliable choice for outdoor solar protection and isolation needs.
As a non-fusible, ungrounded DC disconnect with a 304 stainless steel NEMA 4X enclosure, routine maintenance focuses on visual inspection for enclosure integrity and connection tightness. Its corrosion-resistant design minimizes corrosion-related maintenance, helping sustain uptime in outdoor environments and reducing lifecycle costs.
Installation benefits include a durable 304 stainless steel, NEMA 4X enclosure designed for outdoor use, with straightforward mounting and wiring for a single 400 A circuit at 600 VDC. Its UL Listing supports compliance, while its rugged dimensions (12.42 in depth, 57.47 in height, 24.12 in width) fit typical solar protection footprints and simplify site planning.