Eaton DCU2105UXM DC Disconnect - NEMA 4X
Part Number: DCU2105UXM
Quick Summary
The Eaton DCU2105UXM DC disconnect provides rugged, high-current isolation for solar PV systems. It safely disconnects 400 A at up to 1000 VDC in outdoor and demanding environments. Engineers often face challenges with weather exposure, corrosion, and reliable enclosure sealing; this unit’s 316 stainless steel construction and NEMA 4X enclosure address those concerns. UL Listed certification adds critical regulatory confidence for electrical installations in industrial settings. For procurement and operations teams, the combination of robust protection, straightforward integration with DC PV arrays, and a one-year warranty translates to lower lifecycle risk, reduced maintenance, and faster commissioning across diverse solar projects.
Product Information
Extended Description
DCU2105UXM Eaton: Eaton Heavy duty DC disconnect, DCU, 400 A, DC photovoltaic systems, Grade 316 stainless steel, Non-fusible, Max:1000 Vdc, NEMA 4X, 2, Non-fusible
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2105UXM
UPC
786685866208
Product Length/Depth
12.43 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
128 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
2
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
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Feature: Heavy-duty, non-fusible DC disconnect. Business Impact: Provides safe, reliable isolation for high-current DC circuits, reducing fault exposure and service downtime. Application: Ideal for solar photovoltaic systems where quick, dependable disconnection is required for safety and maintenance. Feature: 1000 VDC maximum and 400 A rating across 2 circuits. Business Impact: Supports multi-string PV arrays with a single enclosure, simplifying field wiring and inventory. Application: Large rooftop and ground-mount installations requiring robust DC distribution. Feature: NEMA 4X enclosure with 316 stainless steel. Business Impact: Superior outdoor and washdown resistance, extended service life in corrosive environments. Application: Outdoor solar sites exposed to weather, humidity, or coastal salinity. Feature: UL Listed certification and non-fusible protection. Business Impact: Streamlines code compliance and reduces replacement risk during faults. Application: Industrial and utility-scale PV deployments needing validated safety standards. Feature: Packaging and installation efficiency. Business Impact: Compact depth (12.43 in) and standard mounting support faster retrofit and field deployment. Application: Retrofit projects and new builds aiming for quicker commissioning. Feature: Documentation and support integration. Business Impact: Access to Eaton datasheet and installation resources to minimize design uncertainty. Application: Procurement teams requiring clear specifications for risk assessment.
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FAQs
Yes. The DCU2105UXM is designed for 400 A and 1000 VDC with two circuits, using a NEMA 4X, 316 stainless steel enclosure. It pairs with common DC PV layouts and standard wiring practices, simplifying integration with existing combiner boxes or switchgear while maintaining safe isolation and compliance.
The device is rated for up to 1000 VDC and 400 A across two circuits. It is non-fusible, providing reliable, straightforward disconnection for PV arrays without added fuse protection in the disconnect itself.
Yes. The enclosure is NEMA 4X and constructed from 316 stainless steel, offering corrosion resistance and weatherproof protection suitable for outdoor rooftop and ground-mount solar sites, including coastal or industrial environments.
The unit is UL Listed, and its NEMA 4X enclosure plus 316 stainless steel construction meet rigorous safety and durability standards. These certifications help ensure code compliance, safer maintenance, and long-term reliability in demanding solar installations.
Eaton offers a one-year warranty from installation or 18 months from shipment, whichever comes first. Maintenance is largely interval-based and straightforward, given the non-fusible design and robust enclosure; this reduces unexpected replacement costs and supports a favorable total cost of ownership for solar projects.