Eaton DCU3064UWM Heavy Duty DC Disconnect - NEMA 4X
Part Number: DCU3064UWM
Quick Summary
Eaton heavy duty DC disconnect is a robust, ungrouned switch designed for solar PV systems. Engineers often face outdoor corrosion, space constraints, and safety concerns that slow project timelines. This unit carries NEC 690 per UL 1741 and UL 98B certifications and utilizes a NEMA 4X enclosure with 304 stainless steel construction to withstand harsh environments. For installers, the combination of a 200 A rating, 600 VDC operation, and versatile lug configurations reduces wiring complexity and accelerates commissioning, supporting scalable PV deployments and long-term reliability.
Product Information
Extended Description
DCU3064UWM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,200A,NEMA 4X,Grade 304 stainless steel,Non-fusible,Ungrounded,LC: In 300 MCM-#6 out 300 MCM-#6. SR: in 300 MCM-#6 out 300 MCM-#6. EG: in #4-#14 AWG out 1/0-#14,600 Vdc,3
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU3064UWM
UPC
786685625263
Product Length/Depth
35.38 in
Product Height
11.63 in
Product Width
24.46 in
Product Weight
70 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
NEC 690 per UL 1741 UL 98B
Type
DC disconnect/ungrounded system
Amperage Rating
200 A
Number of circuits
3
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 4X
Protection
Non-fusible
Application
Solar
Main lug wire size
LC: In 300 kcmil-#6 out 300 kcmil-#6. SR: in 300 kcmil-#6 out 300 kcmil-#6. EG: in #4-#14 AWG out 1/0-#14
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
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - DCU3064UWM
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 200 A amperage rating with a 3-circuit configuration and non-fusible, ungrounded design. Business Impact: Enables safe, high-current DC switching for photovoltaic strings while reducing the need for multiple devices. Application: Suitable for solar installations with 600 VDC systems and three feeder paths. Feature: NEMA 4X rated enclosure in 304 stainless steel. Business Impact: Delivers outdoor weather resistance and corrosion protection, lowering maintenance costs and downtime. Application: Outdoor rooftops and exposed PV sites. Feature: Flexible main lug wiring options (LC, SR, EG) to accommodate large feeders and control wiring. Business Impact: Simplifies field wiring and minimizes inventory variety. Application: Large PV arrays and mixed conductor environments. Feature: Certifications including NEC 690 per UL 1741 and UL 98B. Business Impact: Ensures code compliance and faster inspections, reducing project risk. Application: Commercial and utility-scale PV projects. Feature: Series designation DC Photovoltaic Applications and 600 VDC rating per pole. Business Impact: Aligns with PV industry standards, improving procurement consistency. Application: PV system integration. Feature: Warranty and service policy with 1-year coverage from installation or 18 months from shipment. Business Impact: Lower total cost of ownership and predictable support. Application: Asset management and procurement planning.
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FAQs
To install the DCU3064UWM, mount the enclosure in a suitable outdoor location with adequate clearance, then connect the conductors using the approved lug configurations: LC in 300 kcmil-#6 out 300 kcmil-#6, SR in 300 kcmil-#6 out 300 kcmil-#6, and EG in #4-#14 AWG in to 1/0-#14 out. Ensure proper isolation, grounding practices (ungrounded by design), and adherence to 600 VDC limits. Verify certifications and enclosure integrity before commissioning.
The DCU3064UWM supports LC lugs for in 300 kcmil to out 300 kcmil-#6, SR lugs for in 300 kcmil-#6 to out 300 kcmil-#6, and EG lugs for in #4-#14 AWG to out 1/0-#14. This versatility accommodates large feeders while still allowing control wiring and instrumentation runs. Plan conductor routing to minimize bending radii and ensure secure terminations per NEC guidelines.
Yes, the DCU3064UWM is designed for outdoor solar installations. It features a NEMA 4X enclosure and 304 stainless steel construction for weather and corrosion resistance. Certifications include NEC 690 per UL 1741 and UL 98B, ensuring code compliance and safe, reliable operation in harsh environments and across varied climates.
The unit’s non-fusible, ungrounded design reduces arc flash risk and simplifies maintenance in fault conditions. With a 1-year warranty (or 18 months from shipment), and its durable stainless steel enclosure, expected lifecycle costs are lower due to reduced corrosion-related downtime and fewer replacements. This translates to faster commissioning and lower long-term ownership costs for PV systems.