Eaton DCU1101UWM DC Disconnect - UL 98B/UL1741
Part Number: DCU1101UWM
Quick Summary
Eaton DCU1101UWM DC Disconnect is a 30 A ungrounded, non-fusible disconnect designed for solar PV applications and other DC power systems. It addresses the challenge of providing a durable, maintenance-friendly isolation point in outdoor or harsh environments. Key ratings and certifications bolster reliability: UL 98B, NEC 690 per UL 1741, and a NEMA 4X enclosure with 304 stainless steel construction. The design supports safer field maintenance and faster serviceability, while the 1-circuit configuration and robust lug capacity streamline engineering, procurement, and installation processes in industrial DC networks.
Product Information
Extended Description
DCU1101UWM Eaton: Eaton Heavy duty DC disconnect, 30 A, NEMA 4X, Grade 304 stainless steel, Non-fusible, Ungrounded, #14-#2 AWG lug capacity, #14-#2 AWG solid return, 1, DC photovoltaic applications, Rating:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1101UWM
UPC
786685557960
Product Length/Depth
10.22 in
Product Height
14.14 in
Product Width
8.76 in
Product Weight
21 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
Catalog Notes
Not all configurations for ampere rating and number of circuits are available. All circuit configurations can be found in the product dimension tables.
Type
DC disconnect/ungrounded system
Amperage Rating
30A
Number of circuits
1
Ground
Ungrounded
Protection
Non-fusible
Application
Solar
Main lug wire size
#14-#2 AWG lug capacity, #14-#2 AWG solid return
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
Double Up on Safety
Double Up on Safety
Eaton Specification Sheet - DCU1101UWM
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 30 A amperage rating with 1 circuit. Business impact: Enables targeted disconnection of a single PV string or DC feeder without overdesigning for multiple circuits, reducing cost and panel footprint. Application: Solar installations where compact, reliable isolation is required. Feature: Ungrounded, non-fusible design. Business impact: Simplifies system design and fault isolation, improving safety margins and reducing exposure during maintenance. Application: Ungrounded DC PV interfaces and back-feed protection scenarios. Feature: NEMA 4X enclosure in 304 stainless steel. Business impact: Delivers weather resistance and corrosion resistance for outdoor or washdown environments, lowering maintenance and replacement cycles. Application: Outdoor solar farms and harsh-industrial rooftops. Feature: 1000 VDC system rating with #14-#2 AWG lug capacity. Business impact: Supports high-voltage DC strings and common conductor sizes, enabling scalable PV layouts and quicker terminations. Application: Utility-scale and commercial PV systems with long cable runs. Feature: Heavy-duty DC switch with clear labeling. Business impact: Improves operator clarity and reduces misoperation during start-up or servicing, boosting safety and uptime. Application: High-stress industrial DC networks requiring reliable switching action. Industry insight: Integrating this disconnect into a PV or DC distribution scheme aligns with UL 98B and NEC 690 per UL 1741 expectations, while the 304 stainless enclosure helps meet challenging outdoor codes and corrosive environments, supporting long-term performance and lower life-cycle costs.
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FAQs
For PV installations, mount the DCU1101UWM in a clean, accessible location with adequate clearance for the 10.22 in depth, 14.14 in height, and 8.76 in width footprint. Use #14-#2 AWG conductors in the lug terminals, ensure the system is de-energized before work, and verify the ungrounded, non-fusible configuration aligns with NEC 690 requirements and local codes.
The DCU1101UWM uses a 304 stainless steel enclosure rated for NEMA 4X, delivering excellent rain and corrosion resistance for outdoor installations. These protections, combined with a robust enclosure, help maintain electrical reliability in harsh environments and reduce maintenance frequency in PV and industrial DC networks.
Yes. The device is rated for 1000 VDC and supports 30 A with a single circuit. Its lug capacity accepts #14-#2 AWG conductors, making it suitable for common solar PV strings and DC feeders while maintaining safe, code-compliant operation in outdoor installations.
Key certifications include UL 98B and NEC 690 per UL 1741, indicating compliance with authorized standards for DC distribution and solar interconnection. The enclosure’s NEMA 4X rating further reinforces suitability for harsh environments, while the listed UL/NEC references support contractor acceptance and regulatory compliance.
The product carries Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. This, combined with a durable, corrosion-resistant enclosure and a non-fusible design, reduces maintenance risk and total cost of ownership for solar, industrial, and DC distribution projects.