Eaton DCU1104UXM DC disconnect - NEMA 4X enclosure
Part Number: DCU1104UXM
Quick Summary
The Eaton heavy duty DC disconnect is a reliable isolation device designed for solar PV systems. It addresses common outdoor installation challenges such as corrosion, weather exposure, and limited mounting space by delivering a rugged, purpose-built solution. This unit carries NEC 690 per UL 1741 and UL 98B certifications, with a NEMA 4X enclosure that ensures weatherproof performance and enclosure integrity. Built for 1000 VDC systems and 200 A operation, it reduces maintenance cycles and risk while enabling consistent, code-compliant isolation in utility-scale and commercial solar projects. By pairing robust construction with flexible wiring options and clear documentation, the DCU1104UXM helps procurement teams standardize equipment, streamline stocking, and accelerate installation workflows across projects.
Product Information
Extended Description
DCU1104UXM 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, 1, Non-fusible, System:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1104UXM
UPC
786685625577
Product Length/Depth
35.38 in
Product Height
11.63 in
Product Width
16.54 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/ungrounded system
Amperage Rating
200 A
Number of circuits
1
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
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - DCU1104UXM
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 200 A non-fusible, single-circuit DC disconnect. Business Impact: Provides reliable isolation with low downtime and reduced risk of arc flash in solar installations. Application: Suitable for PV arrays in commercial and utility-scale projects. Feature: 316 stainless steel enclosure with NEMA 4X rating. Business Impact: Delivers durable weatherproof protection, corrosion resistance, and long service life in harsh outdoor environments. Application: Outdoor solar sites and exposed installations. Feature: System voltage up to 1000 VDC and 3000 kcmil-#6 main lug capability. Business Impact: Supports high-voltage DC rail configurations, enabling scalable solar systems and simplified field wiring. Application: Large PV installations with high input voltages. Feature: Non-fusible fuse configuration. Business Impact: Facilitates straightforward maintenance and faster isolation without fuse changes, reducing downtime. Application: Routine servicing and emergency shutdowns in solar plants. Feature: Enclosure style aligned with DC photovoltaic applications and series for solar control. Business Impact: Ensures compatibility with PMCs and inverters, streamlining integration and reducing retrofit risk. Application: PV system control rooms and outdoor enclosures across industrial facilities.
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FAQs
Install the DCU1104UXM in a protected outdoor or semi-enclosed location compatible with a NEMA 4X enclosure. Confirm cabinet mounting clearance, weatherproof sealing, and staggered wiring routes to accommodate LC and SR main lug configurations. Ensure conductor sizes align with the in/out specifications (LC: 300 kcmil-#6, SR: 300 kcmil-#6, EG: #4-#14 AWG to 1/0-#14).
The unit is rated for 200 A and 1000 VDC, with a single circuit and non-fusible protection. It uses LC, SR, and EG connection schemes to accommodate different wiring options, and is designed for DC photovoltaic applications with a 1000 VDC system voltage. It is certified for NEC 690 per UL 1741 and UL 98B.
Yes. The DCU1104UXM complies with NEC 690 per UL 1741 and UL 98B, providing recognized safety and enclosure integrity for solar PV applications. This alignment simplifies compliance during project audits and procurement, helping teams meet regulatory requirements while reducing risk of nonconformance.
Its 316 stainless steel enclosure delivers superior corrosion resistance and a true NEMA 4X protection rating, ideal for outdoor PV installations exposed to weather, dust, and humidity. The robust construction supports long service life, minimizes maintenance cycles, and helps maintain consistent performance in remote or exposed sites.
The non-fusible design reduces maintenance complexity by avoiding fuse replacement during routine shutdowns, while the sturdy enclosure and wide voltage rating decrease the probability of weather-related outages. Expected benefits include reduced downtime, lower lifecycle costs, and faster installation, supporting a strong return on investment for medium to large-scale solar deployments.