Eaton DCU1063URM Heavy Duty DC Disconnect - NEMA 3R
Part Number: DCU1063URM
Quick Summary
The Eaton DCU1063URM heavy duty DC disconnect is a reliable ungrounded switching solution for solar PV installations. Engineers often struggle with outdoor-rated protection that fits compact layouts while meeting safety and code requirements. This unit carries UL 98B and NEC 690 per UL 1741 certifications, and uses a NEMA 3R enclosure to withstand weather and vandal exposure. Designed for 600 VDC systems and 100 A circuits, it integrates with PV arrays through standard lug configurations in a painted galvanized steel enclosure, delivering rugged, maintenance-friendly operation for utility-scale and commercial projects.
Product Information
Extended Description
DCU1063URM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,100A,NEMA 3R,Painted galvanized steel,Non-fusible,Ungrounded,#14-1/0 AWG lug capacity, #14-1/0 AWG solid return,600 Vdc,1,DC Photovoltaic Applications
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1063URM
UPC
786685556963
Product Length/Depth
9.89 in
Product Height
21.99 in
Product Width
11.84 in
Product Weight
22 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
Catalog Notes
Not all configurations for ampere rating and number of circuits are available. All circuit configurations can be found in the product dimension tables.
Type
DC disconnect/ungrounded system
Amperage Rating
100A
Number of circuits
1
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 3R
Protection
Non-fusible
Application
Solar
Main lug wire size
#14-1/0 AWG lug capacity, #14-1/0 AWG solid return
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
Double Up on Safety
Double Up on Safety
Eaton Specification Sheet - DCU1063URM
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 100 A amperage rating with 1 circuit; Business Impact: Enables straightforward, code-compliant DC isolation for a single-string PV setup, reducing design complexity and potential fault points in the field; Application: Solar PV installations requiring a non-fusible, ungrounded disconnect that simplifies maintenance and inspection. Feature: Non-fusible, ungrounded protection; Business Impact: Minimizes risk of unintended fuse faults while providing clear open-circuit signaling in outdoor conditions; Application: Outdoor DC safety mechanism for photovoltaic arrays. Feature: NEMA 3R enclosure; Business Impact: Weatherproof protection minimizes corrosion and downtime in wet or dusty environments; Application: Outdoor installations exposed to harsh weather. Feature: Painted galvanized steel enclosure; Business Impact: Long-term durability with low maintenance and retrofittable installation options; Application: Outdoor PV storm exposure and industrial sites. Feature: Lug capacity up to #14-1/0 AWG; Business Impact: Flexible wiring options streamline installation and future upgrades; Application: DC wiring for PV strings. Feature: 600 VDC operating voltage; Business Impact: Ensures compliance with solar DC system standards while supporting higher voltage arrays; Application: Utility-scale and commercial PV projects. Feature: UL 98B, NEC 690 per UL 1741; Business Impact: Demonstrates regulatory alignment, speeding procurement and site approval; Application: Compliance-driven projects and audits.
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FAQs
The DCU1063URM is engineered for outdoor, ungrounded solar DC protection with a NEMA 3R enclosure and galvanized steel body. It measures 9.89 in deep, 11.84 in wide, and 21.99 in high, weighing 22 lb. It supports a single 100 A circuit and #14-1/0 AWG lugs, making it straightforward to integrate into existing PV dc strings while meeting UL 98B and NEC 690 requirements.
The device is a non-fusible DC disconnect rated for 100 A and 600 VDC per pole, configured for a single circuit with an Ungrounded system. It provides a clear isolation point for PV DC circuits and is certified under UL 98B with NEC 690 per UL 1741, aligning with common solar installation standards.
Yes. The unit is specifically designed for DC photovoltaic applications with an ungrounded configuration, 600 VDC rating, and a weather-resistant NEMA 3R enclosure. Galvanized steel construction enhances durability in outdoor environments, supporting reliable long-term operation in solar arrays.
The DCU1063URM carries UL 98B recognition and NEC 690 compliance as per UL 1741, which are essential for solar DC protection equipment. These certifications help streamline approvals with inspectors and provide assurance of electrical isolation performance in PV installations.
Eaton offers a warranty under Selling Policy 25-000. The product warranty is one year from the date of installation or eighteen months from shipment, whichever occurs first. This coverage supports ongoing reliability and reduces lifecycle risk for commercial and utility-scale PV projects.