Eaton DH166NRK DC Disconnect - UL Listed
Part Number: DH166NRK
Quick Summary
Eaton DC disconnect is a high-current isolation device for 600 VDC solar arrays in industrial facilities. Maintenance teams often struggle with corrosion, weather resistance, and downtime when disconnect switches aren’t designed for harsh environments. This product carries UL Listed safety certification and a weather-rated NEMA 3R enclosure, delivering rugged outdoor performance. The design also supports a single-pole, fusible, neutral-enabled configuration and large conductor terminations, making it ideal for solar PV and industrial DC power distribution. By combining robust protection with simple installation, it reduces risk, speeds service work, and helps meet codes while keeping operating costs predictable. This translates to faster commissioning and less field rework in demanding industrial environments.
Product Information
Extended Description
DH166NRK Eaton: Eaton DC disconnect, 600 A, NEMA 4X, 304 stainless steel, Class R, Fusible with neutral, Single-pole, Two-wire, Solar disconnect switch, 600 V, (1)#2-(1)600 kcmil and (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton DC disconnect
Catalog Number
DH166NRK
UPC
786685384511
Product Length/Depth
14.25 in
Product Height
71.75 in
Product Width
25.38 in
Product Weight
200 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/grounded system
Amperage Rating
600 A
Number of circuits
1
Protection
Fusible
Voltage rating
600 VDC
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Protection
Fusible
DC disconnects for 600VDC solar photovoltaic installations (single circuit)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - DH166NRK
Feature: 600 A amperage rating enables a single isolation point for large PV strings; Business Impact: reduces the number of devices required and minimizes downtime during maintenance; Application: ideal for solar PV and industrial DC distribution where space and reliability matter. Feature: 600 VDC rating with fusible protection and neutral connection; Business Impact: safer fault interruption and controlled arc energy, aiding compliance with safety standards; Application: essential in DC power systems and battery storage interfaces. Feature: NEMA 3R enclosure with painted galvanized steel; Business Impact: outdoor-ready protection against weather exposure, reducing enclosure corrosion and service calls; Application: rooftop and yard installations in harsh environments. Feature: Large-termination capability (1)#2-(1)600 kcmil and (1)#1/0-(1)750 kcmil Cu/Al; Business Impact: simplifies wiring plans and reduces termination labor; Application: high-current DC feeds to inverters and equipment. Feature: UL Listed certification; Business Impact: accelerates procurement cycles and ensures regulatory compliance; Application: preferred in regulated industrial and solar projects. Feature: Comprehensive dimensions and 200 lb weight; Business Impact: predictable footprint for planning and mounting in existing switchgear; Application: integration with compact DC distribution setups and retrofit projects.
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FAQs
The DH166NRK supports a termination scheme of (1)#2-(1)600 kcmil and (1)#1/0-(1)750 kcmil copper or aluminum conductors. This single-pole, fusible device enables large-diameter wire connections, simplifying DC power routing from inverter outputs to the disconnect. This capability reduces field splice points and improves reliability in high-current solar and industrial DC circuits.
Yes. The DH166NRK is equipped with a NEMA 3R enclosure and UL Listed certification, delivering reliable outdoor protection against weather, corrosion, and dust. Its rugged construction and 200 lb weight support secure mounting in rooftop or ground-marden Solar PV installations, ensuring long service life in exposed environments.
The DH166NRK carries UL Listed certification and uses a NEMA 3R-rated enclosure. These features support compliance with safety and electrical protection standards for outdoor DC distribution. The unit’s fusible protection and grounded system configuration further enhance compliance and protection for solar and industrial DC circuits.
Maintenance focus for the DH166NRK centers on periodic inspection of the enclosure, fusing elements, and conductor terminations. With UL Listed safety backing and a robust NEMA 3R enclosure, routine checks should verify seals and integrity of connections. Eaton’s warranty policy provides one year from installation or eighteen months from shipment, whichever comes first, supporting lifecycle budgeting.
The DH166NRK enhances safety by providing a clearly defined, code-compliant isolation point for servicing DC circuits, reducing arc energy risk and downtime. Its rugged outdoor enclosure ensures reliable operation in harsh environments, lowering maintenance costs. ROI improves through faster commissioning, simplified wiring with large-termination options, and reduced field rework in high-current solar installations.