Eaton DH366FRKLPR Heavy Duty Safety Switch - UL Listed
Part Number: DH366FRKLPR
Quick Summary
The Eaton DH366FRKLPR heavy duty safety switch enables safe, 3-phase power control for industrial distribution. Too many disconnects hinder maintenance and drive downtime while complicating regulatory compliance. UL Listed and NEMA 3R enclosure ensure reliable operation in indoor and outdoor environments, with 600V capability for demanding electrical systems. As a Series K fusible switch with Posi-Lok reverse pin, it supports fast, secure, code-compliant installation. This model delivers robust current handling and durability, enabling reliable protection for high-load motors, feeders, and equipment. Its substantial footprint informs installation planning and safety considerations, while Eaton’s warranty and documentation help reduce lifecycle risk and maintenance surprises.
Product Information
Extended Description
DH366FRKLPR Eaton: Eaton Quick Connect Safety Switch, Heavy Duty, Single-Throw, 600A, 600V,3P, Fusible, Series K, NEMA 3R, Posi-Lok reverse pin
Product Name
Eaton quick connect heavy duty safety switch
Catalog Number
DH366FRKLPR
UPC
786685372792
Product Length/Depth
32.87 in
Product Height
74.34 in
Product Width
16.1 in
Product Weight
370 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 reverse pin
Type
Heavy Duty, Single-Throw
Amperage Rating
600A
Number Of Poles
Three-pole
Voltage rating
600 V
Enclosure
NEMA 3R
Fuse configuration
Fusible
Series
Series K
Commercial Distribution, Switching Devices, Volume 2, Tab 1
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Eaton Specification Sheet - DH366FRKLPR
Feature: 600A, three-pole, fusible design. Business Impact: Provides high-current protection and safe isolation for large motors and feeders, reducing arc flash exposure and downtime. Application: Motor control and feeder circuits in heavy manufacturing. Feature: 600V rating with Series K, heavy duty construction. Business Impact: Supports universal compatibility with plant distribution gear and long service life under tough conditions. Application: Plant-wide switchgear and substations. Feature: NEMA 3R enclosure and UL Listed certification. Business Impact: Enables outdoor and indoor installation with regulatory compliance and weather resistance, reducing mounting constraints. Application: Outdoor substations, exposed mechanical rooms, and harsh industrial environments. Feature: Posi-Lok reverse pin for positive engagement. Business Impact: Improves electrical contact reliability and simplifies safe maintenance by preventing misalignment. Application: On-site servicing without compromising safety. Feature: Dimensions and weight (32.87 in L × 74.34 in H × 16.1 in W; 370 lb). Business Impact: Informs crane, rigging, and mounting planning, ensuring proper space allocation and compliant installation. Application: Plant renovations or new builds with limited access areas. Feature: Series K and Fusible fuse configuration. Business Impact: Streamlines coordination with protective devices and standardizes protection schemes across multiple lines. Application: Engineering standardization in multi-line plant environments. Feature: Warranty terms and documentation (one year from installation or 18 months from shipment). Business Impact: Reduces lifecycle risk and supports predictable maintenance budgeting. Application: Asset management programs and service contracts.
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FAQs
Plan for a crane or forklift capable installation due to the 370 lb weight and large footprint (32.87 in L, 74.34 in H, 16.1 in W). Ensure a sturdy mounting surface meeting NEMA 3R suitability, adequate clearance for servicing, and proper isolation from energized parts. Confirm compatible disconnect accessories and follow the Eaton wiring diagram in the specification sheet for safe termination.
Posi-Lok reverse pin provides positive engagement during operation, reducing the risk of loose connections and misalignment. This feature enhances safety during maintenance by preventing inadvertent opening or closing of the switch, simplifying field servicing, and improving reliability in high-load, mission-critical applications.
Yes. The enclosure is rated NEMA 3R, and the unit is UL Listed, which supports use in outdoor and indoor environments subject to weather exposure. With a 600V rating and fusible configuration, it is appropriate for rugged power-distribution tasks in industrial settings such as outdoor substations or harsh production floors.
Eaton provides a warranty aligned with policy 25-000: one year from the date of installation or eighteen months from shipment, whichever occurs first. For maintenance budgeting, this reduces lifecycle risk. Eaton also offers specification sheets and catalogs to support commissioning, spare parts planning, and long-term asset management.
Industries with heavy motor loads and critical power circuits benefit most, including manufacturing, mining, water/wastewater, and process plants. The 600A, 600V capacity, Series K design, UL listing, and NEMA 3R enclosure support reliable, code-compliant isolation for large motors, feeders, and industrial drives.