Eaton DCG1104URM DC Disconnect - NEMA 3R, 1000 VDC
Part Number: DCG1104URM
Quick Summary
Eaton heavy duty DC disconnect is a rugged 200 A switching solution designed for solar photovoltaic systems. It addresses field wiring challenges by providing a non-fusible, grounded path with an isolated return, simplifying installation and maintenance. With NEC 690 compliance per UL 1741 and UL 98B, plus a NEMA 3R enclosure for outdoor or harsh environments, this unit meets critical safety and reliability standards. The painted galvanized steel enclosure delivers long-term corrosion resistance, while compatible main lug sizes streamline integration with existing DC strings. For engineering teams and procurement specialists, this means fewer parts, faster commissioning, and lower total cost of ownership across solar projects.
Product Information
Extended Description
DCG1104URM Eaton: Eaton heavy duty DC disconnect,200A,NEMA 3R,Painted galvanized steel,Non-fusible,Grounded,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-#14,1,Isolated return,DC photovoltaic systems,1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCG1104URM
UPC
786685625300
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
NEC 690 per UL 1741 UL 98B
Type
DC disconnect/grounded system
Amperage Rating
200 A
Number of circuits
1
Ground
Grounded
Maximum voltage
1000 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
1000 VDC
Voltage rating
1000 VDC
Series
DC photovoltaic applications
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Fuse configuration
Non-fusible
Isolation
Isolated return
Switch type
DC photovoltaic systems Heavy duty
Protection
Non-fusible
Feature → Business Impact → Application: 200 A amperage rating provides a robust, non-fusible DC disconnect that reduces arc-flash risk and improves system safety, leading to safer maintenance and faster fault isolation in solar PV installations. Application: utility-scale and commercial solar arrays where reliable current control is essential. Feature → Business Impact → Application: NEMA 3R painted galvanized steel enclosure offers weather-resistant protection, enabling outdoor deployment and reducing enclosure corrosion-related downtime. Application: outdoor DC disconnects at rooftops, carports, or ground-mounted PV stations. Feature → Business Impact → Application: Isolated return and grounded configuration simplifies DC wiring, improves code compliance, and minimizes leakage paths, supporting straightforward commissioning and safer operation in tight control-systems. Application: DC photovoltaic systems with complex string wiring. Feature → Business Impact → Application: Main lug wire sizing flexibility LC/SR/EG accommodates large conductors up to 300 MCM-#6 and smaller feeds, reducing the need for adapters and enhancing installation efficiency. Application: PV combiner boxes and duct-mounted DC switchgear. Feature → Business Impact → Application: Non-fusible protection provides clear, maintainable protection without fuse management, lowering maintenance costs and improving fault diagnosis. Application: routine service and troubleshooting. Feature → Business Impact → Application: Comprehensive certification alignment NEC 690 per UL 1741 UL 98B ensures regulatory compliance, accelerating procurement approvals and site acceptance. Application: solar codes and building standards across regions.
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FAQs
Plan for a single-circuit DC disconnect in a NEMA 3R painted galvanized enclosure. Ensure LC/SR/EG main lug conductor compatibility (up to 300 MCM-#6 in/out) and verify isolated return and grounding. Follow NEC 690 guidelines for wiring topology and use rated lugs and seals to maintain enclosure integrity during outdoor operation.
The unit is rated for 200 A with a 1000 VDC maximum, non-fusible protection, and a grounded, isolated return configuration. It supports DC photovoltaic system switching within a NEMA 3R enclosure, providing safe, code-compliant operation for solar arrays.
Yes. It is purpose-built for solar PV systems, with an enclosure rated NEMA 3R and a 1000 VDC system voltage, making it appropriate for outdoor or semi-enclosed installations while meeting NEC 690/UL 1741 requirements.
It uses a painted galvanized steel enclosure designed for durability in outdoor environments, offering weather resistance and long-term protection against corrosion in critical PV switching applications.
Eaton provides a warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first, with standard support for field replacements and technical guidance during commissioning.