Eaton DCU2065FXM DC Disconnect - UL Listed, NEMA 4X
Part Number: DCU2065FXM
Quick Summary
DCU2065FXM DC disconnect provides safe isolation for 600 VDC solar arrays. Maintenance teams often face bulky equipment, corrosion-prone enclosures, and time-consuming servicing in outdoor installations. UL Listed and NEMA 4X-rated construction, plus a 316 stainless steel enclosure, deliver reliable protection in challenging environments. This heavy-duty DC disconnect is designed for solar projects, offering robust protection and long-term value while integrating smoothly with existing electrical protection schemes. For industrial protection and PV applications, it supports efficient maintenance, reduced downtime, and regulatory compliance across outdoor facilities.
Product Information
Extended Description
DCU2065FXM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,400A,NEMA 4X,Grade 316 stainless steel,Fusible,Ungrounded,600 Vdc,2,DC Photovoltaic Applications
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2065FXM
UPC
786685865966
Product Length/Depth
12.42 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
118 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
2
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 4X
Protection
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
Fusible
Switch type
Heavy duty
Protection
Fusible
Feature: High current capability with 400 A rating and two circuits. Business Impact: Enables scalable solar PV generator protection without oversizing components, reducing the number of devices needed and cutting installation complexity. Application: Large rooftop and utility-scale PV installations benefit from streamlined wiring and safer, centralized DC isolation. Feature: Fusible protection configuration. Business Impact: Limits fault current and protects downstream equipment, lowering the risk of arc flash and improving inverter protection. Application: PV strings and batteryless DC links require fast, reliable fault clearance. Feature: NEMA 4X enclosure in 316 stainless steel. Business Impact: Delivers superior corrosion resistance and washdown capability, extending life in outdoor, harsh environments. Application: Outdoor solar farms, coastal sites, and industrial campuses with challenging climates. Feature: Ungrounded system design. Business Impact: Reduces stray voltage paths and simplifies conforming with ungrounded PV architectures, easing compliance planning. Application: Ungrounded DC systems common in solar installations to minimize potential shock risks. Feature: UL Listed warranty and support. Business Impact: Ensures ongoing compliance and predictable maintenance through a one-year warranty or 18 months from shipment, whichever occurs first, plus Eaton’s support. Application: Standardized procurement with assured service levels for industrial customers and integrators.
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FAQs
For outdoor PV arrays, ensure proper mounting clearance, vibration resistance, and weatherproof routing. Use the 316 stainless steel NEMA 4X enclosure to protect connections from dust, water, and corrosion. Verify conductor sizing for 400 A and ensure fuse holders are compatible with your selected DC fusing scheme. Follow Eaton’s installation guidelines and local code requirements for a compliant, long-lasting protection solution.
The 400 A rating supports substantial DC current from multiple PV strings, enabling you to consolidate circuits within a single enclosure. Design considerations include appropriate bus sizing, fuse selection, and cable management to maintain voltage drop within spec. This configuration reduces the number of components and installation time while preserving protection margins for larger PV configurations.
The unit is specified as an Ungrounded system, which is common in many PV installations to minimize shock risk. When integrating with a grounded system, ensure proper bonding, isolation points, and adherence to applicable standards. Always confirm system topology with your electrical design and Eaton’s technical guidance to maintain safety and compliance.
The DCU2065FXM carries UL Listed certification and features a NEMA 4X rated enclosure made of 316 stainless steel, providing corrosion resistance and outdoor durability. These protections, combined with fusible protection and heavy-duty switching, help meet solar industry standards and regulatory requirements for outdoor DC switching gear.
The robust 316 stainless steel NEMA 4X enclosure lowers corrosion-related maintenance, reducing downtime and part replacement. The fusible protection minimizes fault damage, potentially lowering inverter downtime costs. With Eaton’s one-year warranty (or 18 months from shipment, whichever comes first) and standard field support, the total cost of ownership improves through longer intervals between servicing.