Eaton DH366URKNLP Heavy Duty Safety Switch - UL Listed
Part Number: DH366URKNLP
Quick Summary
Eaton DH366URKNLP heavy duty safety switch provides reliable isolation for industrial power distribution in harsh environments. Maintenance teams struggle with difficult latching, unreliable signaling, and wear under dust, vibration, and moisture. This UL Listed device features a NEMA 3R enclosure, Posi-Lok for secure, positive-lock operation, and the rugged Series K design to simplify field installations. In practice, you gain improved uptime and safer shutdown sequences, while aligning with electrical protection and control strategies across industrial plants. Ideal for 600A, 600V applications in process lines, utilities, and machine automation, it complements standard switchgear and enhances maintenance planning.
Product Information
Extended Description
DH366URKNLP Eaton: Eaton Heavy Duty, Single-Throw, 600A,Quick Connect Safety Switch, 600V,3P, Unfused, Series K, NEMA 3R, Posi-Lok
Product Name
Eaton quick connect heavy duty safety switch
Catalog Number
DH366URKNLP
UPC
786685373140
Product Length/Depth
9.89 in
Product Height
21.69 in
Product Width
11.13 in
Product Weight
27 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
Posi-Lok
Type
Heavy Duty, Single-Throw
Amperage Rating
600A
Number Of Poles
Three-pole
Voltage rating
600 V
Enclosure
NEMA 3R
Fuse configuration
Unfused
Series
Series K
Commercial Distribution, Switching Devices, Volume 2, Tab 1
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - DH366URKNLP
Feature: Three-pole, 600A amperage rating with 600V capability and unfused configuration. Business Impact: Enables reliable control of large motors and feeders, reducing nuisance outages and minimizing spare parts inventory. Application: Suitable for main feeders, motor control centers, and heavy machinery where high current switching is required. Feature: Posi-Lok secure operation. Business Impact: Ensures positive locking under vibration and impact, improving operator safety and sequence integrity. Application: Critical in outdoor or harsh environments where inadvertent opening must be prevented during shutdowns. Feature: NEMA 3R enclosure. Business Impact: Delivers superior protection against dust, rain, and corrosion in outdoor or damp locations, lowering enclosure maintenance costs. Application: Outdoor substations, process lines, and wash-down areas. Feature: Series K design with quick connect features. Business Impact: Reduces field wiring time and simplifies retrofit projects, cutting installation labor and project schedules. Application: New installations and upgrades in controlled environments and substations. Feature: UL Listed and warranty coverage. Business Impact: Supports regulatory compliance and lowers lifecycle risk with a clear warranty path, improving procurement confidence. Application: Plant-wide safety programs and equipment qualification processes. Feature: Special features including Posi-Lok and compatibility with standard Eaton accessories. Business Impact: Improves installation flexibility and long-term reliability, decreasing diagnostic time during maintenance outages. Application: Panels, switchgear assemblies, and control rooms where standardization is important.
Get a Quick Quote for a Eaton DH366URKNLP
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton DH366URKNLP?
Enquire Now
FAQs
The DH366URKNLP requires a sturdy mounting surface and clearance for the 21.69 inch height and 11.13 inch width. Ensure alignment with the Series K enclosure and use appropriate enclosure fittings for a NEMA 3R installation. Verify 600V insulation clearances and implement standard lockout/tagout procedures using the Posi-Lok handle to prevent accidental operation during maintenance.
Yes. The product is designed for NEMA 3R rated enclosures, making it suitable for outdoor and damp environments. In practice, this reduces enclosure corrosion risk and minimizes weather-related outages. For best results, install in a sheltered location when possible and follow Eaton recommendations for wiring practices and protective coatings on exposed conductors.
Posi-Lok ensures a positive, secure lock on the operating handle, preventing unintentional opening or closing due to vibration or impact. This improves operator safety, maintains controlled sequence during switching, and reduces maintenance calls related to mispositioned handles and erratic signaling in harsh environments.
The DH366URKNLP is UL Listed and uses a NEMA 3R enclosure, aligning with key electrical safety and environmental standards. This simplifies procurement by meeting widely recognized safety requirements, supports retrofit into existing Eaton systems, and facilitates regulatory compliance for industrial power distribution and protection schemes.
With a heavy-duty, three-pole 600A/600V design and quick-connect features, installation time is reduced and wiring reliability is improved, lowering labor costs. The rugged enclosure and UL Listed certification reduce maintenance frequency, while the Posi-Lok mechanism minimizes operating errors, contributing to longer asset life and lower maintenance interventions over the product lifecycle.