Eaton DH366FDK Fusible Switch - UL Listed
Part Number: DH366FDK
Quick Summary
Eaton DH366FDK Fusible Switch provides heavy-duty isolation and overcurrent protection for large motors and feeders in industrial environments. Facilities often struggle to source protection that is both compliant and straightforward to install in service entrances without sacrificing reliability. UL Listed status with NEC 230.62 (C) compliant barrier, a NEMA 12/3R enclosure, and Class H fuse provisions deliver robust safety and predictable maintenance. The unit's 600 A rating and HP options up to 500 hp at 240–600 V support scalable power distribution while simplifying commissioning. Designed for service entrances with neutral or ground lug kits, it also reduces spare parts needs and downtime through standardized, rugged construction.
Product Information
Extended Description
DH366FDK Eaton: Eaton Heavy duty single-throw fused safety switch, 600 A, NEMA 12/3R, 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 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH366FDK
UPC
782113207636
Product Length/Depth
12.75 in
Product Height
63 in
Product Width
23 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.
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Catalog Notes
Suitable for service entrance use with a neutral or ground lug kit installed
Enclosure
NEMA 12, 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 12/3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible without neutral
Feature 1: 600 A amperage rating and HP options up to 500 hp (240/480/600 V) enable handling of large motors and demanding feeders. Business impact: supports scalable production lines and reduces the need for mid-cycle upgrades. Application: Heavy-duty motor control in manufacturing and processing facilities. Feature 2: NEMA 12/3R enclosure with painted galvanized steel construction provides reliable protection in dusty, damp, or incidental washdown environments. Business impact: minimizes environmental risk to electrical equipment and lowers maintenance costs. Application: Shop floors, warehouses, and outdoor service entrances. Feature 3: Class H fuse provision and fusible-without-neutral configuration offer robust fault isolation with straightforward field replacement. Business impact: improves uptime and simplifies maintenance planning. Application: Protective switching for critical drives and feeders. Feature 4: Three-pole, three-wire design supports standard three-phase distribution, ensuring compatibility with common motor loads. Business impact: reduces wiring complexity and speeds installation. Application: Main disconnects and motor starter assemblies. Feature 5: Service-entrance compatibility with neutral or ground lug kits simplifies integration into existing electrical distributions. Business impact: lowers engineering time and inventory requirements. Application: Utility-style service entrances and building distribution points. Feature 6: UL Listing and NEC barrier compliance deliver regulatory confidence and easier audits. Business impact: reduces compliance risk and procurement friction. Application: Industrial facilities with strict safety and code requirements. Feature 7: Physical dimensions and weight—63 in height, 23 in wide, 12.75 in depth, 160 lb—aid field planning and cabinet space budgeting. Business impact: smoother installation planning and fit checks. Application: Plant hallways, control rooms, and equipment rooms.
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FAQs
Yes. The DH366FDK is suitable for service entrance use with a neutral or ground lug kit installed, and it is a three-pole, three-wire device rated for 600 V, enabling reliable main-disconnect protection in many service-entry applications.
The switch is rated for 600 A, with HP ratings up to 200, 400, and 500 hp at 240, 480, and 600 V, respectively. It features a 600 V voltage rating, three poles, and three wires for standard three-phase power distribution.
Yes, the DH366FDK is UL Listed and comes in a NEMA 12, NEMA 3R enclosure, with a painted galvanized steel body designed for durable protection in demanding environments.
The unit measures 63 inches in height, 23 inches in width, and 12.75 inches in depth, with a weight of approximately 160 pounds, aiding space planning and installation layout.
It carries Eaton’s warranty policy 25-000 (one year from installation or 18 months from shipment, whichever occurs first) and complies with NEC barrier requirements (230.62 C), supporting easier code compliance and service planning.