Eaton DH165UDKN DC disconnect - 400A, NEMA 12
Part Number: DH165UDKN
Quick Summary
Eaton DH165UDKN DC disconnect provides reliable power isolation for DC circuits in industrial and commercial equipment. Users struggle with bulky, non-fusible protection that complicates maintenance and increases downtime; this unit offers a compact, robust alternative. UL Listed certification ensures safety compliance, and the rugged NEMA 12 painted galvanized steel enclosure shields sensitive electronics in demanding environments. With a 600 VDC rating and a 400 A capacity, it complements high-current DC distributions while simplifying installation and service. Designed to fit standard industrial layouts, it supports efficient preventive maintenance and predictable lifecycle costs. This makes it a practical choice for data centers, solar DC installations, and manufacturing lines seeking reliable, compliant isolation.
Product Information
Extended Description
DH165UDKN Eaton: Eaton DC disconnect, Single-throw, 400 A, NEMA 12, Painted galvanized steel, Class R fuses, Non-Fusible, Single-pole, One-wire
Product Name
Eaton DC disconnect
Catalog Number
DH165UDKN
UPC
786685384429
Product Length/Depth
12.43 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
115 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
Special features
Neutral assemblies factory installed
Type
Single-throw
Amperage Rating
400 A
Number of circuits
1
Protection
Non-fusible
Number of poles
Single-pole
Voltage rating
600 VDC
Enclosure
NEMA 12
Enclosure material
Painted galvanized steel
Fuse configuration
Non-fusible
Protection
Non-fusible
DC disconnects for 600VDC solar photovoltaic installations (single circuit)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Double Up on Safety
Double Up on Safety
Eaton Specification Sheet - DH165UDKN
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: The DH165UDKN delivers a 400 A amperage rating with a single-throw, single-pole configuration and non-fusible protection. Business impact: This combination provides robust DC isolation for high-current circuits, reducing fuse maintenance and limiting arc exposure, which translates to safer, more reliable operation across the line. Application: Ideal for DC power distribution in solar photovoltaic installations, battery backup systems, and industrial drive circuits where quick isolation is essential. Feature: A NEMA 12 enclosure constructed from painted galvanized steel offers rugged indoor protection. Business impact: The enclosure resists dust and moisture intrusion in plant environments, lowering corrosion risk and maintenance costs. Application: Suitable for indoor control cabinets, switchgear rooms, and mechanical spaces where protection and durability are required. Feature: Neutral assemblies are factory installed, streamlining field wiring. Business impact: Reduces installation time, minimizes wiring errors, and improves electrical balance. Application: Fits standard installation practices in industrial panels and data centers. Feature: UL Listed certification supports compliance with safety standards and installation codes. Business impact: Helps satisfy regulatory requirements, reduces audit risk, and streamlines procurement for industrial facilities. Application: Widely used in commercial and industrial facilities requiring verified electrical protection devices. Feature: Overall dimensions and weight inform mounting and enclosure planning (12.43 in depth, 24.12 in width, 57.47 in height; 115 lb). Business impact: Ensures accurate space allocation and mounting hardware selection, preventing fit issues and installation delays. Application: Helpful during new builds or retrofits in equipment rooms and control cabinets.
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FAQs
DH165UDKN mounts like a standard DC disconnect in indoor electrical rooms and control panels. Plan for a single-pole, single-throw device rated at 400 A at 600 VDC, housed in a NEMA 12 painted galvanized steel enclosure with a height of 57.47 in and width of 24.12 in. Ensure proper mounting hardware, adequate headroom for wiring, and a neutral assembly already factory-installed to streamline installation.
Key specifications include a 400 A amperage rating, 600 VDC voltage rating, non-fusible protection, single-pole architecture, and UL Listed certification. This combination enables reliable high-current DC isolation without fuse maintenance, while complying with safety standards. The design supports one circuit with a non-fusible approach, optimizing maintenance schedules and reducing spare parts inventory for DC protection schemes.
Yes. The DH165UDKN is well-suited for solar PV DC isolation and data center DC power distribution, thanks to its 600 VDC rating and robust 400 A capacity. Factory-installed neutral assemblies simplify wiring for PV arrays and drive systems, while the UL Listed, NEMA 12 enclosure provides dependable indoor protection in demanding industrial environments.
The DH165UDKN is UL Listed and configured in a NEMA 12 enclosure, aligning with common electrical codes and safety programs for indoor industrial use. These certifications support regulatory compliance, reduce audit risk, and streamline procurement for facilities that require verified electrical protection components in control panels and DC distribution systems.
The non-fusible, factory-installed neutral design minimizes on-site wiring and fuse replacement needs, cutting maintenance time and associated costs. UL listing and a rugged enclosure contribute to lower service calls and longer intervention intervals. With a one-year warranty from installation (or 18 months from shipment), this device supports a favorable total cost of ownership through reduced downtime.