Eaton DCU2105FPM DC Disconnect - UL Listed, 1000 VDC
Part Number: DCU2105FPM
Quick Summary
Eaton heavy duty DC disconnect provides safe, high-current isolation for solar PV systems. Engineers often struggle with reliability, corrosion exposure, and complex wiring when selecting outdoor DC isolation equipment. This unit carries UL Listed certification and features a NEMA 4 enclosure, ensuring weather resistance and electrical safety in harsh environments. With a 400 A rating, two circuits, and a maximum 1000 VDC, it supports large PV arrays while simplifying protection coordination. The painted galvanized steel enclosure, fusible configuration, and Eaton warranty translate into reduced downtime and lower lifecycle costs for solar projects.
Product Information
Extended Description
DCU2105FPM Eaton: Eaton Heavy duty DC disconnect, DCU, 400 A, DC photovoltaic systems, Painted steel, Fusible, Max:1000 Vdc, NEMA 4, 2, Fusible
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2105FPM
UPC
786685866260
Product Length/Depth
12.43 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
133 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
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
Fusible
Switch type
Heavy duty
Protection
Fusible
Feature: 400 A per path with two circuits. Business Impact: Enables isolation of high-current PV strings, reducing heat buildup and improving protection coordination. Application: rooftop and ground-mounted solar installations seeking robust current handling without cabinet sprawl. Feature: Maximum voltage 1000 VDC. Business Impact: Keeps system voltage within a single enclosure, streamlining protective device selection and installation. Application: commercial and utility-scale PV projects. Feature: NEMA 4 weatherproof enclosure. Business Impact: Weather, dust, and chemical resistance lowers maintenance need and extends service life. Application: outdoor solar sites in varied climates. Feature: Fusible protection. Business Impact: Provides clear fault isolation and supports code-compliant protection coordination. Application: downstream of upstream breakers in PV arrays. Feature: Painted galvanized steel enclosure. Business Impact: Corrosion resistance and durability reduce replacement cycles. Application: long-term outdoor deployments. Feature: Heavy-duty construction with 133 lb weight. Business Impact: Enhanced vandal resistance and secure mounting; installation benefits include robust support for outdoor environments. Application: high-security solar installations requiring reliable isolation.
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FAQs
The DCU2105FPM is designed for solar DC circuits with two 400 A paths up to 1000 VDC, featuring a fusible protection scheme and a NEMA 4 rated enclosure. It works with standard PV wiring practices and provides accessible terminals for straightforward field connections, enabling efficient integration with typical combiner boxes and upstream protection devices while maintaining UL Listed compliance.
Maintenance focuses on periodic fuse inspection and replacement per Eaton guidelines, outdoor enclosure sealing, and exterior cleaning. Because the unit is fusible, fuse blocks should be checked for integrity and replaced using manufacturer-recommended procedures to preserve protection coordination. Its UL listing and NEMA 4 rating support reliable outdoor operation and code-compliant maintenance.
Yes. The DCU2105FPM is designed for both rooftop and ground-mounted PV systems. Its 57.47 in height, 24.12 in width, and 133 lb weight indicate a tall, rugged enclosure suitable for outdoor mounting. It provides safe isolation for high-current DC circuits up to 1000 VDC, with weatherproof construction ideal for exposed installations while maintaining ease of service access.
The DCU2105FPM carries UL Listed certification and features a NEMA 4 enclosure rating, which together support electrical safety and weather resistance required by many electrical codes and solar project specifications. These certifications help installers demonstrate compliance, simplify procurement documentation, and reduce risk during inspections and audits.
The DCU2105FPM consolidates two high-current circuits in a single, rugged enclosure, reducing cabinet count and wiring complexity. This can lower installation labor, shorten commissioning time, and decrease long-term maintenance costs due to durable, weatherproof construction. In solar projects, these efficiencies translate to faster deployment, improved safety, and predictable protection performance.