Eaton DH164NWK DC disconnect - 600 VDC NEMA 4X enclosure
Part Number: DH164NWK
Quick Summary
Eaton DH164NWK DC disconnect is a high-capacity isolation device for 600 VDC DC power circuits in industrial and solar applications. Engineers often struggle with safe isolation in rugged environments, where reliability and fast maintenance are critical. This UL Listed unit features a NEMA 4X stainless steel enclosure and a 200 A fusible, single-pole design, enabling dependable protection for DC power paths. It supports a two-wire configuration with neutral, simplifying wiring during commissioning and future upgrades. By pairing rugged enclosure construction with robust electrical protection, it delivers long-term reliability for solar farms, data centers, and industrial DC distributions, while helping meet stringent safety and compliance requirements for critical facilities.
Product Information
Extended Description
DH164NWK Eaton: Eaton DC disconnect, 400 A, NEMA 12, Painted galvanized steel, Class R, Fusible with neutral, Single-pole, Two-wire, Solar disconnect switch, 600 V, (2)#1/0-(2)300 kcmil or (1)#1/0-(1)750 kcmil Al
Product Name
Eaton DC disconnect
Catalog Number
DH164NWK
UPC
786685375960
Product Length/Depth
11.2 in
Product Height
57.47 in
Product Width
22.66 in
Product Weight
123 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
200 A
Number of circuits
1
Protection
Fusible
Voltage rating
600 VDC
Enclosure
NEMA 4X
Enclosure material
304 stainless 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 - DH164NWK
Feature → Business Impact → Application: Fusible protection with neutral for a single-pole 200 A disconnect limits fault currents and provides predictable shutdown, reducing arc-flash exposure during maintenance and improving overall safety in DC distribution networks. Application: Ideal for DC solar PV installations and industrial power systems where quick isolation is necessary. Feature → Business Impact → Application: NEMA 4X enclosure in 304 stainless steel delivers corrosion resistance and rugged outdoor durability, lowering enclosure maintenance costs and extending asset life in rooftop and outdoor SCADA / control installations. Feature → Business Impact → Application: 600 VDC rating and conductor compatibility with large cross-sections (#1/0 to (2)300 kcmil Al or (1)750 kcmil Al) support long DC runs with minimal splicing, reducing installation time and material costs in battery storage and EV charging DC networks. Feature → Business Impact → Application: UL Listed certification ensures compliance with electrical safety codes, simplifying inspections and accelerating project approval for power distribution upgrades. Feature → Business Impact → Application: 1 circuit, fusible protection, and a compact footprint streamline panel integration, lowering procurement complexity and enabling faster on-site commissioning for solar and industrial DC protection schemes. Feature → Business Impact → Application: Warranty and service terms (Eaton policy 25-000) provide risk mitigation and predictable maintenance planning for ongoing operations in critical facilities.
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FAQs
The DH164NWK is a single-pole fusible DC disconnect designed for 600 VDC circuits. It features a NEMA 4X stainless steel enclosure (304 stainless) and accepts large conductor sizes up to (2)300 kcmil Al or (1)750 kcmil Al. It is wired as a two-wire, one-circuit device with neutral, and should be mounted in a suitable enclosure or switchgear cabinet per local electrical codes. Ensure UL Listed compliance and compatible with the designated solar or industrial DC distribution configuration.
Yes. It is rated for 600 VDC with fusible protection and a 200 A amperage rating, making it well-suited for DC solar installations and other battery-backed DC power paths. The NEMA 4X enclosure supports outdoor or harsh environments, and UL Listing confirms compliance with safety standards, simplifying integration into PV arrays and DC distribution layouts.
The DH164NWK is UL Listed, which verifies conformance with recognized safety standards, reducing risk during commissioning and inspections. The enclosure is NEMA 4X rated and constructed from 304 stainless steel, offering robust protection against corrosion and weather. Together, these certifications and ratings help ensure long-term reliability in outdoor and industrial settings.
By providing safe, reliable DC isolation in a rugged enclosure, the DH164NWK reduces maintenance downtime, lowers arcing risk, and minimizes field wiring errors. Its compatibility with large conductor sizes and single-pole operation streamlines installation, while the UL Listed status supports faster regulatory approvals. These factors collectively contribute to lower operating costs and faster project deployment in solar and industrial DC networks.
The unit supports conductor runs such as (2) #1/0 to (2) 300 kcmil Al or (1) #1/0 to (1) 750 kcmil Al, enabling flexible power transfer for large DC systems. It is a single-pole, two-wire configuration with neutral and is designed to protect a single circuit at 200 A and 600 VDC, suitable for solar arrays, battery storage, and industrial DC distributions.