Eaton DCU2105UPM DC Disconnect - UL Listed 1000V
Part Number: DCU2105UPM
Quick Summary
Eaton heavy duty DC disconnect is a rugged solution for isolating solar DC circuits in photovoltaic systems. Engineers often struggle with space constraints, harsh outdoor environments, and the need for safe, code-compliant isolation in PV installations. UL Listed certification confirms electrical safety, NEMA 4 enclosure protects against rain, dust, and corrosion, and the 1000 VDC rating supports modern solar arrays. The DCU2105UPM combines durable construction with straightforward installation, reducing field labor and downtime. For procurement teams and OEMs, this unit delivers reliable protection in solar projects with a painted galvanized steel enclosure, enabling long-term reliability, easier maintenance, and smoother compliance across project lifecycles.
Product Information
Extended Description
DCU2105UPM Eaton: Eaton Heavy duty DC disconnect, DCU, 400 A, DC photovoltaic systems, Painted steel, Non-fusible, Max:1000 Vdc, NEMA 4, 2, Non-fusible
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2105UPM
UPC
786685866185
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 4
Protection
Non-fusible
Application
Solar
System voltage
1000 VDC
Voltage rating
1000 VDC
Series
DC photovoltaic applications
Enclosure
NEMA 4
Enclosure material
Painted galvanized steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Feature: 400 A amperage rating across two circuits with a maximum voltage of 1000 VDC and non-fusible protection. Business impact: supports high-current PV strings while reducing fuse maintenance and fault-clearing complexity, ultimately lowering downtime and service costs. Application: ideal for solar PV arrays and utility-scale installations where robust, safe isolation is required. Feature: NEMA 4-rated enclosure made from painted galvanized steel. Business impact: delivers weather resistance against rain, dust, and corrosion, increasing uptime in outdoor environments and reducing enclosure replacement cycles. Application: rooftop and ground-mounted solar sites in varying climates. Feature: Heavy-duty DC disconnect/ungrounded system design. Business impact: simplifies safe de-energization procedures for maintenance and debugging, improving technician safety and workflow efficiency. Application: routine servicing, string level maintenance, and rapid fault isolation. Feature: Large, durable cabinet with 12.43 in depth, 24.12 in width, and 57.47 in height weighing 128 lb. Business impact: predictable footprint for site planning and easier handling during installation. Application: field deployments in constrained spaces where reliable access matters. Feature: UL Listed and solar-focused specifications with 1000 VDC system voltage. Business impact: ensures regulatory compliance and compatibility with modern high-voltage PV systems, supporting supplier qualification and project approvals. Application: compliant designs for solar energy projects, OEM equipment, and industrial installations.
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FAQs
Install the DCU2105UPM in a NEMA 4 outdoor-rated enclosure with proper mounting supports to handle its 128 lb weight. Ensure clearance for the 12.43 in depth and 24.12 in width, route input and output conductors per NEC/UL guidelines, and torque terms to Eaton recommendations. Keep the unit in non-fuse service mode and clearly label circuits for maintenance safety.
The unit provides a 400 A amperage rating across two circuits, a maximum 1000 VDC, and non-fusible protection, with a 1000 VDC system voltage rating. UL Listed and NEMA 4 compliant, it supports outdoor PV arrays and simplifies code-compliant design. These specs shape bus sizing, enable safe maintenance, and influence string configuration in large-scale installations.
Yes. The NEMA 4 weatherproof painted galvanized steel enclosure protects against rain, dust, and corrosion, while UL Listing confirms safety compliance. With a 1000 VDC rating, it aligns with modern rooftop PV strings, and its durable construction supports long service life and reduced maintenance in exposed environments.
UL Listed certification provides recognized electrical safety compliance, and the NEMA 4 enclosure ensures weatherproof performance. The product is designed for solar PV applications with a 1000 VDC system rating, which helps meet NEC/CEC requirements and facilitates safe field servicing and component qualification.
The non-fusible design reduces fuse-related maintenance and the 128 lb rugged enclosure minimizes corrosion risk, lowering replacement frequency. A one-year warranty supports risk mitigation, while durable, high-current performance and outdoor-ready construction contribute to lower total cost of ownership by reducing downtime and extending service life in harsh environments.