Eaton DCU3064FXM DC Disconnect - NEMA 4X, 600 VDC
Part Number: DCU3064FXM
Quick Summary
DCU3064FXM is a heavy‑duty DC disconnect designed for solar PV systems and other 600 VDC circuits. Operators and engineers confront outdoor exposure, limited space, and strict compliance requirements; this unit combines a 316 stainless steel NEMA 4X enclosure with rugged fusible protection to address those challenges. Key certifications—UL 98B, NEC 690 per UL 1741, and NEMA 4X—ensure safe, dependable operation in harsh environments. The ungrounded design and 3‑circuit configuration simplify integration with evolving solar and energy storage projects, while the 200 A rating supports scalable installations and reduced equipment stocking, delivering reliable protection and lower total cost of ownership.
Product Information
Extended Description
DCU3064FXM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,200A,NEMA 4X,Grade 316 stainless steel,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
DCU3064FXM
UPC
786685625294
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
UL 98B NEC 690 per UL 1741
Type
DC disconnect/ungrounded system
Amperage Rating
200 A
Number of circuits
3
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 4X
Protection
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
316 stainless steel
Fuse configuration
Fusible
Switch type
Heavy duty
Protection
Fusible
Feature: 200 A amperage rating provides robust fault isolation for PV arrays and inverters, reducing voltage stress and equipment wear. Benefit: Enhances system reliability and minimizes unplanned downtime in utility-scale and commercial solar installations. Application: Ideal for solar and energy storage projects with high current demands. Feature: Three circuits in a single enclosure enables integrated protection for multi-string arrays. Benefit: Streamlines wiring, simplifies service, and reduces cabinet footprint while maintaining code-compliant separation of circuits. Application: PV farms and commercial rooftops where space is at a premium. Feature: 316 stainless steel enclosure with NEMA 4X rating. Benefit: Superior corrosion resistance and weatherproofing for outdoor installations, extending life cycles in harsh environments. Application: Outdoor solar and battery storage sites, including coastal or industrial settings. Feature: Fusible protection with Ungrounded system configuration. Benefit: Safe fault isolation and reduced risk of arc flash incidents; supports fast, compliant de-energization. Application: Solar PV and energy storage in accordance with NEC 690. Feature: Main lug wire entries detailed as LC, SR, and EG ranges. Benefit: Flexible termination options from large feeders (up to 300 kcmil) to small control wires (AWG), enabling seamless integration with existing gear. Application: Field wiring for diverse PV and control circuits. Feature: UL 98B and NEC 690 per UL 1741 certifications. Benefit: Regulatory compliance reduces project risk and speeds commissioning. Application: Utility-grade solar installations and code-driven projects.
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FAQs
What size wires can terminate on the DCU3064FXM? The unit supports LC entries for in 300 kcmil-#6 out 300 kcmil-#6, SR entries for in 300 kcmil-#6 out 300 kcmil-#6, and EG entries for in #4-#14 AWG out 1/0-#14. These ranges accommodate large feeder connections and smaller control wiring, enabling flexible configurations for string inlets, combiner boxes, and inverters. Proper torque and conduit entries should be followed per Eaton installation documentation.
The DCU3064FXM is rated for 200 A and up to 600 VDC with three circuits. It uses a fusible protection scheme and an ungrounded system, housed in a NEMA 4X enclosure made from 316 stainless steel. These specs support robust outdoor operation, safe de‑energization, and compliance with NEC 690 and UL 98B where applicable.
Yes. The NEMA 4X enclosure and 316 stainless steel construction provide outdoor durability, corrosion resistance, and weatherproofing ideal for rooftop and ground‑mounted solar arrays. The UL/NEC certifications reinforce compliance for outdoor PV systems, while the fusible protection adds a layer of fault isolation in variable weather and load conditions.
DCU3064FXM carries UL 98B and NEC 690 per UL 1741 certifications, aligning with common solar project requirements. These certifications help verify safe enclosure, switching performance, and wiring practices for PV inverters, combiners, and protection devices, reducing audit risk and accelerating project approval and commissioning.
The product follows Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. Regular inspections should focus on enclosure seals, terminal lubrication, and fuse status to maintain performance. Routine checks, combined with the documented specifications, help maximize uptime and protect long‑term ROI in solar or energy storage installations.