Eaton DCU2104UWM DC disconnect - NEMA 4X IP rated
Part Number: DCU2104UWM
Quick Summary
Eaton heavy duty DC disconnect is a rugged isolation device for solar PV and DC power systems. End users and installers wrestle with corrosion, weather exposure, and tight installation spaces. UL 98B and NEC 690 per UL 1741 provide essential PV safety and code compliance, while the 304 stainless steel enclosure with NEMA 4X protection keeps electronics safeguarded in harsh environments. With 1000 VDC system voltage, flexible wiring options, and robust protection, this unit delivers faster installation, reduced maintenance, and higher uptime for commercial and industrial solar projects.
Product Information
Extended Description
DCU2104UWM Eaton: Eaton Heavy duty DC disconnect, 200 A, NEMA 4X, 304 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, 2, Non-fusible, System:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2104UWM
UPC
786685625607
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
UL 98B NEC 690 per UL 1741
Type
DC disconnect/ungrounded system
Amperage Rating
200 A
Number of circuits
2
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
304 stainless steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Feature: Heavy-duty DC disconnect rated at 200 A with 2 circuits and non-fusible protection. Business Impact: Provides reliable, code-compliant DC isolation with minimal fuse maintenance, reducing downtime and potential arc-flash exposure. Application: Solar farms and rooftop PV installations benefit from fast, safe isolation during maintenance and troubleshooting. Feature: NEMA 4X enclosure in 304 stainless steel. Business Impact: Superior corrosion resistance and weatherproof performance extend service life in outdoor environments, lowering lifecycle costs. Application: Outdoor solar arrays, exposed industrial DC buses, and wet or dusty locations require durable enclosures. Feature: Flexible main-lug wiring options (LC, SR, EG) up to 3000 kcmil equivalent and 1000 VDC rating. Business Impact: Simplifies conduit routing and terminations, reduces field rework, and enables scalable PV string configurations. Application: Large-scale PV and utility DC systems with diverse conductor types. Feature: Compliance and safety certifications (UL 98B, NEC 690 per UL 1741). Business Impact: Ensures regulatory alignment for PV installations, easing procurement and inspection processes. Application: Commercial and industrial solar projects seeking certified protection. Feature: 1000 VDC system voltage, non-fusible protection, and 2 circuits. Business Impact: Enables high-voltage DC operation with straightforward control and maintenance, supporting efficient system integration. Application: PV inverters, battery storage interfaces, and other DC power control points.
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FAQs
The DCU2104UWM is designed for solar PV and other 1000 VDC systems, featuring 200 A amperage, two circuits, and a non-fusible design. It supports LC SR EG main-lug configurations and is suitable for outdoor, industrial, and rooftop installations that require a rugged DC disconnect with a NEMA 4X stainless steel enclosure.
Non-fusible protection means there are no internal fuses to replace, reducing routine maintenance and potential fuse-related failure points. This configuration simplifies troubleshooting, provides predictable isolation, and is well-suited for PV and DC power control where consistent disconnection is essential for safety and uptime.
Yes. With a NEMA 4X enclosure made from 304 stainless steel and a 1000 VDC rating, the unit is designed for harsh outdoor environments. It delivers weather resistance, corrosion protection, and durable performance in rooftop and ground-mounted solar systems while maintaining safe isolation of DC circuits.
The DCU2104UWM carries UL 98B and NEC 690 compliance via UL 1741, ensuring critical PV safety and code alignment. These certifications support acceptance by inspectors and integrators for PV installations and improve project qualification and procurement confidence.
By reducing fuse maintenance, offering durable outdoor protection, and enabling faster installation with flexible wiring options, the DCU2104UWM lowers lifecycle costs and downtime. Its rugged construction supports longer service intervals, higher system uptime, and overall improved reliability for solar and industrial DC power applications.