Eaton DCU3104UXM Disconnect - NEMA 4X
Part Number: DCU3104UXM
Quick Summary
DCU3104UXM DC disconnect from Eaton delivers safe, high-current disconnection for solar and energy-storage installations. Engineers often struggle with corrosion, harsh environments, and wiring complexity when selecting heavy-duty DC disconnects, which can drive downtime and maintenance costs. It meets UL 98B and NEC 690 per UL 1741, and it comes in a rugged NEMA 4X enclosure for outdoor or washdown environments, delivering dependable performance where moisture and contaminants are present. With 200 A across three circuits and a 1000 VDC rating, this unit supports large solar arrays and fast isolation without compromising safety. Designed for solar PV applications, it also offers compatibility and lifecycle benefits that reduce total cost of ownership and simplify compliance.
Product Information
Extended Description
DCU3104UXM Eaton: Eaton Heavy duty DC disconnect, 200 A, NEMA 4X, 316 stainless steel, Non-fusible, 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, Max:1000 Vdc, NEMA 4X, 3, Non-fusible, System:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU3104UXM
UPC
786685625652
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
Maximum voltage
1000 VDC
NEMA rating
NEMA 4X
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 4X
Enclosure material
316 stainless steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Feature: 200 A, 3 circuits, non-fusible, 1000 VDC rating. Business Impact: This enables safe, centralized disconnection for sizable solar arrays, reducing the need for multiple switches and simplifying protective schemes. Application: suitable for utility-scale PV and commercial installations where fast isolation is critical for maintenance and safety. Feature: NEMA 4X enclosure in 316 stainless steel. Business Impact: provides robust corrosion resistance and reliable operation in outdoor, washdown, or coastal environments, extending service life and lowering maintenance costs. Application: outdoor solar fields, battery energy storage systems, and harsh industrial settings. Feature: Main lug options LC, SR, EG with defined wire sizes. Business Impact: flexible installation and retrofit capability, reducing the need for adapters and speeding up panel upgrades. Application: PV array connections and retrofit projects. Feature: UL 98B and NEC 690 per UL 1741 certifications. Business Impact: ensures code compliance and safety, simplifying permit approvals and installation planning. Application: grid-tied PV systems and commercial solar deployments. Feature: Non-fusible protection. Business Impact: lowers maintenance while providing reliable isolation for non-fused configurations. Application: maintenance workflows and safer commissioning in solar facilities. Feature: Dimensions and weight (35.38 in L x 11.63 in H x 24.46 in W; 70 lb). Business Impact: manageable handling and retrofit fit within standard electrical cabinets. Application: space-constrained installations and modular solar arrays.
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FAQs
Yes. The DCU3104UXM provides multiple lug configurations supporting LC, SR, and EG main lugs, with detailed ranges for wire sizing: 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. This flexibility simplifies upgrades, retrofits, and panel replacements while maintaining a unified protection approach.
The unit is rated for 200 A across 3 circuits and a maximum system voltage of 1000 VDC, with a non-fusible protection configuration. It is designed for DC photovoltaic applications, enabling safe isolation of solar arrays and energy-storage systems at utility-scale and commercial installations.
Yes. The enclosure is NEMA 4X and constructed from 316 stainless steel, providing excellent corrosion resistance and washdown capability. This makes it ideal for outdoor solar farms, rooftop PV systems exposed to weather, and harsh industrial environments where reliability is critical.
The DCU3104UXM carries UL 98B and NEC 690 per UL 1741 certifications, ensuring conformity with recognized safety and solar-specific installation standards. These certifications help meet electrical codes, facilitate permit approvals, and reduce project risk in utility-scale and commercial PV deployments.
Eaton offers a one-year warranty from installation or eighteen months from shipment, whichever comes first. Maintenance is typically low due to the non-fusible design and corrosion-resistant enclosure; however, periodic inspections for connections, seals, and terminal integrity are recommended to sustain peak performance in outdoor environments.