Eaton DCU1064URM DC Disconnect - NEMA 3R
Part Number: DCU1064URM
Quick Summary
DCU1064URM is a heavy-duty DC disconnect for solar applications, enabling safe circuit isolation. Engineers often face ungrounded DC systems that suffer from arcing or challenging maintenance in outdoor or remote locations. This unit carries UL 98B and NEC 690 per UL 1741 certifications and is housed in a NEMA 3R, painted galvanized steel enclosure for outdoor reliability. With 200 A capacity and a single circuit design, it delivers robust protection while simplifying installation and compliance workflows. The product supports 600 VDC systems and ungrounded configurations, delivering clear business value through safer operations, reduced downtime, and easier serviceability for solar and other PV-driven DC installations.
Product Information
Extended Description
DCU1064URM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,200A,NEMA 3R,Painted galvanized 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,1
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1064URM
UPC
786685625065
Product Length/Depth
37.5 in
Product Height
11.5 in
Product Width
19 in
Product Weight
45 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
1
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 3R
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 3R
Enclosure material
Painted galvanized steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - DCU1064URM
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The DCU1064URM is a heavy-duty DC disconnect rated at 200 A with 1 circuit, delivering reliable isolation to quickly contain faults and protect conductors, improving system uptime in solar plants. This translates to measurable downtime reductions and safer maintenance windows for outdoor PV arrays. Application: Solar DC protection, industrial power systems. Feature → Business Impact → Application: Ungrounded, non-fusible design simplifies fault analysis and reduces arc exposure, supporting NEC 690 compliance and safer field operations on ungrounded DC networks. Application: PV farms and microgrids where ungrounded configurations are common. Feature → Business Impact → Application: NEMA 3R enclosure in painted galvanized steel provides weather resistance against rain, dust, and temperature fluctuations, enabling dependable outdoor deployment. Application: Rooftop and ground-mounted solar installations. Feature → Business Impact → Application: Flexible wiring configurations (LC SR EG) and large main lug sizes (300 MCM-#6 in/out, etc) streamline field connections, cut install time, and reduce termination errors. Application: Large commercial PV projects and distributed energy systems. Feature → Business Impact → Application: UL 98B and NEC 690 per UL 1741 compliance along with non-fusible protection offers regulatory peace of mind, aiding code inspections and reducing rework. Application: Utility-scale and industrial solar deployments. Feature → Business Impact → Application: Compact footprint (37.5 in length, 19 in width, 11.5 in height) with 45 lb weight enables easier handling, transport, and retrofits in constrained sites. Application: Retrofit projects and tight equipment rooms. Feature → Business Impact → Application: 600 VDC system voltage rating supports high-performance PV arrays while delivering reliable isolation at the required voltage levels. Application: High-voltage DC protection for solar.
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FAQs
The DCU1064URM is built for solar DC protection and other 600 VDC ungrounded circuits. It handles 200 A in a single circuit, enclosed in a weather-resistant NEMA 3R cabinet. With UL 98B and NEC 690 per UL 1741 compliance, it is ideal for outdoor PV arrays and industrial solar applications requiring reliable isolation and straightforward field wiring.
Wiring uses the defined main lug configurations: LC for in 300 MCM-#6 out 300 MCM-#6, SR identical, and EG for in #4-#14 AWG out 1/0-#14. The enclosure dimensions are 37.5 in L, 19 in W, 11.5 in H with a 45 lb weight, designed for wall or stand mounting in industrial or outdoor installations, simplifying retrofit projects.
Key certifications include UL 98B for DC switches, NEC 690 per UL 1741 coverage for PV systems, and a NEMA 3R enclosure rating for outdoor service. These align with common utility and OEM requirements, providing regulatory confidence and safer operation in harsh environments.
Eaton backs this product with a standard warranty policy: one year from installation or eighteen months from shipment, whichever comes first. This is documented in Selling Policy 25-000, and Eaton provides datasheets and service resources to support installation, commissioning, and ongoing maintenance.
By delivering quick, reliable isolation and durable outdoor performance, the DCU1064URM minimizes fault-related downtime and reduces maintenance intensity. Its certified protection and flexible wiring reduces installation time, supporting faster commissioning and improved system reliability across commercial and utility-scale solar deployments.