Eaton DH166UWKN DC disconnect - NEMA 4X, 304 stainless steel
Part Number: DH166UWKN
Quick Summary
Eaton DH166UWKN DC disconnect provides a robust DC power isolation solution for industrial power distribution. Engineers often face downtime from corrosion, moisture intrusion, and enclosure failures in harsh environments; this unit addresses those pain points with rugged construction and proven protection. UL Listed, NEMA 4X enclosure, and 304 stainless steel provide reliable performance in washdown areas and outdoor installations, while the factory-installed neutral assemblies simplify wiring. The 600 A, 600 VDC rating supports high-current DC protection in solar, data center, and heavy machinery applications, delivering safer operation and lower total cost of ownership through easier maintenance and faster commissioning.
Product Information
Extended Description
DH166UWKN Eaton: Eaton DC disconnect, Single-throw, 600 A, NEMA 4X, 304 Stainless steel, Class R fuses, Non-Fusible, Single-pole, One-wire
Product Name
Eaton DC disconnect
Catalog Number
DH166UWKN
UPC
786685384450
Product Length/Depth
12.79 in
Product Height
62.97 in
Product Width
25.1 in
Product Weight
167 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
600 A
Number of circuits
1
Protection
Non-fusible
Number of poles
Single-pole
Voltage rating
600 VDC
Enclosure
NEMA 4X
Enclosure material
304 stainless 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 - DH166UWKN
Feature → Business Impact → Application: The DH166UWKN delivers a 600 A amperage rating, enabling safe high-current isolation without oversizing components, reducing thermal stress and potential fault propagation. This translates to measurable uptime and improved safety margins for critical DC feeders in mining, water treatment, and battery energy storage systems. Feature → Application: Its single-throw, single-pole configuration simplifies control logic and minimizes wiring complexity, cutting install time and diminishing the risk of miswiring during field assembly in control panels and remote switchgear. Feature → Application: The NEMA 4X enclosure with 304 stainless steel construction provides corrosion resistance and washdown suitability, making it ideal for outdoor substations, solar PV installations, and process facilities where harsh cleaning protocols are common. Feature → Application: Neutral assemblies factory installed streamline commissioning and reduce on-site customization, boosting install consistency and compliance with electrical standards in large-scale DC distribution. Feature → Application: UL Listed certification reinforces regulatory compliance, supporting procurement approvals, insurance requirements, and audit readiness across industrial environments.
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FAQs
The DH166UWKN is designed with a NEMA 4X enclosure and 304 stainless steel construction, providing excellent corrosion resistance and washdown compatibility. While the exact mounting method depends on the surrounding switchgear layout, its robust enclosure is intended for outdoor and harsh indoor environments. Ensure adequate clearance per electrical codes and maintain drainage and ventilation in the surrounding cabinet.
The unit features a 600 A amperage rating and a 600 VDC voltage rating. It is a non-fusible, single-pole, single-throw DC disconnect with one circuit, suitable for isolating DC feeders in industrial power systems. This configuration supports straightforward control and reduces fault-path complexity in high-current DC applications.
Yes, the DH166UWKN is suitable for 600 VDC solar photovoltaic installations (single circuit). Eaton provides a DC disconnects for 600VDC PV installations brochure and a specification sheet to support design and compliance. Use it where rapid isolation, safety, and reliability are critical for PV arrays and related DC distributions.
The DH166UWKN is UL Listed, with a NEMA 4X enclosure and 304 stainless steel body, which satisfies many industrial codes and standards for indoor and outdoor DC protection equipment. These certifications streamline procurement approvals, support insurance and regulatory audits, and help ensure safe operation in challenging environments.
Maintenance is typically minimal due to the non-fusible, simple single-pole design and rugged enclosure. The factory-installed neutral assemblies reduce wiring errors and commissioning time, lowering labor costs. Expect routine visual inspections and periodic verification of the enclosure seals and terminal connections as part of standard preventive maintenance programs.