Eaton DCG1105URM DC disconnect - NEMA 3R UL Listed
Part Number: DCG1105URM
Quick Summary
Eaton DCG1105URM DC disconnect provides rugged, non-fusible DC isolation for solar PV installations. Engineers often struggle with safe, reliable isolation in outdoor or harsh environments, risking arc flash exposure and downtime. This unit is UL Listed and housed in a NEMA 3R enclosure, with a painted galvanized steel body and a 1000 VDC rating, designed for durable outdoor service. Its 400 A capacity and isolated return support compliant, grounded DC systems, while the one-circuit configuration simplifies installation and maintenance. For projects prioritizing safety, reliability, and long-term total cost of ownership, the DCG1105URM aligns with modern solar and electrical protection standards and delivery timelines.
Product Information
Extended Description
DCG1105URM Eaton: Eaton heavy duty DC disconnect,400A,NEMA 3R,Painted galvanized steel,Non-fusible,Grounded,1,Isolated return,DC photovoltaic systems,1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCG1105URM
UPC
786685865973
Product Length/Depth
12.42 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
24 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 Listed
Type
DC disconnect/grounded system
Amperage Rating
400 A
Number of circuits
1
Ground
Grounded
Maximum voltage
1000 VDC
NEMA rating
NEMA 3R
Protection
Non-fusible
Application
Solar
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
Heavy duty DC photovoltaic systems
Protection
Non-fusible
Feature → Business Impact → Application: 400 A amperage rating enables safe, high-current DC isolation for large solar arrays, reducing fault risk and enabling faster maintenance with minimal downtime in utility-scale or commercial PV projects. Application: Solar PV systems requiring robust, non-fusible disconnects. Feature → Business Impact → Application: 1000 VDC maximum voltage supports today’s high-voltage PV strings, improving system flexibility and future-proofing designs. Application: High-voltage PV installations with long cable runs. Feature → Business Impact → Application: NEMA 3R painted galvanized steel enclosure provides outdoor protection against weather and corrosion, lowering enclosure-related failures and maintenance costs. Application: Outdoor solar and DC distribution enclosures. Feature → Business Impact → Application: Isolated return with grounded configuration enhances fault paths and safety compliance, simplifying interlock and protection schemes. Application: Grounded DC systems in PV plants. Feature → Business Impact → Application: UL Listed certification and a compact 12.42 in depth, 24.12 in width, and 57.47 in height footprint support straightforward integration and clear labeling for field crews. Application: Installation in constrained mechanical spaces with clear documentation and support. Feature → Business Impact → Application: One circuit per unit streamlines wiring, reduces complexity, and lowers installation time in commercial rooftop or ground-mount PV installations. Application: standard single-circuit DC disconnect requirements.
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FAQs
The DCG1105URM is designed for single-circuit DC isolation up to 400 A and 1000 VDC. When deploying in solar PV installations, ensure proper mounting on a stable surface, maintain required clearances for 1000 VDC systems, and connect to a grounded, isolated-return DC conductor. Verify UL Listing compliance and follow Eaton’s installation guidance for safe operation.
The unit uses a painted galvanized steel enclosure rated NEMA 3R, protecting internal components from rain, dust, and corrosion. This enclosure, combined with a robust non-fusible DC disconnect design, supports reliable outdoor performance in solar arrays and roof-top installations, reducing weather-related wear and maintenance costs over the system life.
Key ratings include 400 A amperage, 1000 VDC maximum voltage, and non-fusible protection. It is a grounded, isolated-return DC disconnect intended for solar applications. The device is UL Listed, confirming compliance with applicable safety standards and providing assurance for integration into compliant PV power distribution schemes.
The DCG1105URM carries UL Listing and a NEMA 3R enclosure rating. These certifications confirm suitability for outdoor use, weather protection, and safety compliance in DC distribution for solar PV systems, helping meet regulatory and procurement requirements for industrial facilities.
Maintenance is typically limited to periodic electrical inspections and enclosure integrity checks. Its rugged galvanized steel enclosure and non-fusible protection contribute to reduce fault incidences and downtime, improving system reliability and total cost of ownership in long-term solar projects.