Eaton DH366FRK Heavy Duty Fusible Safety Switch - NEMA 3R
Part Number: DH366FRK
Quick Summary
Eaton DH366FRK heavy-duty fusible safety switch protects large electrical feeders in industrial power distribution. When downtime and equipment damage threaten production, you need robust isolation that’s easy to install and maintain. This UL Listed device comes in a NEMA 3R enclosure for weather resistance and safe indoor/outdoor service. With 600 A and up to 500 hp protection at 600 V, it supports demanding motor loads while enabling straightforward service entrance configurations. Overall, you gain reliability, safety, and long-term cost savings through disciplined protection and compatible accessories. This product is UL Listed and designed for service entrance use with a Neutral Kit, aligning with common industrial control standards.
Product Information
Extended Description
DH366FRK Eaton: Eaton Enhanced visible blade single-throw safety switch, 600 A, NEMA 3R, Painted galvanized steel, Class H, Three-pole, Three-wire, 600 V, Max Hp: 200, 400, 500 hp (3PH @240,480,600 V), (1)#2-(1)600 kcmil; and (1)#1/0-(1)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH366FRK
UPC
782113207568
Product Length/Depth
58 in
Product Height
12 in
Product Width
27.5 in
Product Weight
160 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
Catalog Notes
Suitable for service entrance use with a Neutral Kit installed
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class H
Fuse configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Heavy duty fusible safety switch
Amperage Rating
600A
HP rating - max
200, 400, 500 hp (3PH @240,480,600 V)
NEMA rating
NEMA 3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible without neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH366FRK
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 600 A amperage rating and three-pole, 3-wire configuration provide robust overload protection for large feeders. Business Impact: Enables safe, reliable isolation of high-current loads, reducing risk of damage and downtime in manufacturing environments. Application: Suitable for heavy motor feeds and process lines in industrial plants. Feature: 600 V voltage rating and HP protection up to 500 hp (3PH @240,480,600 V) support scalable motor control. Business Impact: Helps plant managers plan for future load growth without replacing switches, improving capital efficiency. Application: Large machinery and conveyor systems. Feature: NEMA 3R enclosure and painted galvanized steel construction offer weather resistance. Business Impact: Enables indoor/outdoor installation with consistent performance, lowering weather-related service calls. Application: Outdoor switchgear, loading docks, and exposed equipment areas. Feature: Fuse class provision Class H and fusible without neutral simplify wiring. Business Impact: Enhances protection coordination while reducing wiring complexity and maintenance. Application: Utility and industrial control panels requiring predictable fuse protection. Feature: Neutral Kit compatibility and service entrance suitability streamline code-compliant installations. Business Impact: Accelerates commissioning, improves safety compliance, and supports quick upgrades. Application: New builds and retrofit projects with main service disconnects. Feature: UL Listed certification and clearly labeled components aid maintenance and audits. Business Impact: Improves regulatory compliance and reduces inspection cycle time. Application: Quality assurance processes and regulator-facing documentation. Feature: Physical dimensions and weight (58 in L, 12 in H, 27.5 in W, 160 lb) indicate robust construction. Business Impact: Provides confidence in durability for fleet and plant-wide protection strategies. Application: Industrial facilities with substantial electrical loads.
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