Eaton DCU1105UXM DC disconnect - NEMA 4X, 1000 VDC
Part Number: DCU1105UXM
Quick Summary
Eaton DCU1105UXM DC disconnect provides heavy-duty DC isolation for solar PV systems and other 1000 VDC installations. Engineers frequently face challenges safely switching high voltage DC in outdoor facilities, where insulation failures or arcing can cause downtime. UL Listed certification with a NEMA 4X enclosure and a 316 stainless steel body delivers rugged protection in harsh outdoor conditions. With a 400 A rating and a single circuit, it supports scalable PV configurations while minimizing maintenance, installation complexity, and long-term operating costs. Designed for reliability in critical applications, it aligns with solar industry standards and provides straightforward installation, serviceability, and field reliability.
Product Information
Extended Description
DCU1105UXM Eaton: Eaton Heavy duty DC disconnect, DCU, 400 A, DC photovoltaic systems, Grade 316 stainless steel, Max:1000 Vdc, NEMA 4X, 1, Non-fusible
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1105UXM
UPC
786685866161
Product Length/Depth
12.43 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
116.5 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/ungrounded system
Amperage Rating
400 A
Number of circuits
1
Maximum voltage
1000 VDC
NEMA rating
NEMA 4X
Protection
Non-fusible
Application
Solar
System voltage
1000 VDC
Voltage rating
1000 VDC
Series
DC photovoltaic applications
Enclosure
NEMA 4X
Enclosure material
316 stainless steel
Switch type
Heavy duty
Protection
Non-fusible
Feature: High amperage, non-fusible DC disconnect rated at 400 A for a single circuit. Business Impact: Reduces device count, simplifies protection schemes, and lowers upfront hardware costs. Application: Ideal for solar PV arrays and DC networks up to 1000 VDC. Feature: 316 stainless steel enclosure with NEMA 4X rating. Business Impact: Delivers corrosion resistance and washdown durability, extending service life in outdoor or harsh environments. Application: Outdoor utility-scale and rooftop solar installations. Feature: UL Listed certification. Business Impact: Streamlines compliance, commissioning, and supplier qualification for regulated projects. Application: Industrial facilities, renewable energy sites, and utilities. Feature: Weatherproof, rugged construction with a robust enclosure. Business Impact: Minimizes unplanned downtime and maintenance, improving uptime and safety metrics. Application: Harsh climates, coastal regions, and exposed PV layouts. Feature: Dimensions and weight that support field deployment and mounting flexibility. Business Impact: Facilitates installation in compact or retrofit spaces and reduces handling risk. Application: Field service, retrofit projects, and modular solar deployments. Feature: Non-fusible protection design. Business Impact: Simplifies switching operations, reduces arc flash exposure during disconnection, and lowers total cost of ownership. Application: Solar DC circuits and other non-fusible DC networks.
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FAQs
Mounting should follow standard electrical enclosure practices for a 400 A, 1000 VDC DC disconnect. Ensure adequate support, proper clearances, and compliance with local codes. The unit's 12.43 in depth, 24.12 in width, and 57.47 in height require a robust mounting surface and proper ventilation to maintain NEMA 4X performance.
The DCU1105UXM is a non-fusible DC disconnect rated for 400 A with a single circuit and a maximum voltage of 1000 VDC, making it suitable for high-voltage PV arrays and other 1000 VDC DC networks.
Yes. The enclosure is NEMA 4X rated and constructed from 316 stainless steel, offering superior weather resistance and corrosion protection for outdoor solar installations and harsh environments.
The unit is UL Listed and features a NEMA 4X enclosure with 316 stainless steel. These certifications and ratings support compliance in industrial and renewable energy applications while delivering durable outdoor performance.
With a rugged, non-fusible design and weatherproof enclosure, the DCU1105UXM reduces downtime and service interventions. Its corrosion-resistant build and straightforward installation lower lifecycle maintenance costs, contributing to a lower total cost of ownership for solar and other PV DC systems.