Eaton DH364FDK Heavy Duty Fusible Safety Switch - NEMA 12/3R
Part Number: DH364FDK
Quick Summary
Eaton DH364FDK Heavy Duty Fusible Safety Switch provides robust protection for commercial and industrial feeders. In demanding facilities, downtime and unsafe isolation are major pain points; this switch delivers reliable fault interruption and straightforward maintenance. UL Listed, NEC 230.62 barrier-compliant, and housed in a NEMA 12/3R enclosure, it offers dependable protection against dust and moisture in harsh environments. It is field-ready for service entrances with neutral or ground lug kits and can be modified to meet NEMA 3R rainproof requirements when required. Designed for scalable power distribution, it supports large conductors (#6-300 kcmil Cu/Al) and integrates with standard Eaton accessories for easy procurement and reduced downtime.
Product Information
Extended Description
DH364FDK Eaton: Eaton Heavy duty single-throw fused safety switch, 200 A, NEMA 12/3R, Painted galvanized steel, Class H, Fusible without neutral, Three-pole, Three-wire, 600 V, Max Hp: 50, 50/ 125, 150 hp (1/3PH @480, 600 V), #6-300 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH364FDK
UPC
782113206875
Product Length/Depth
37.5 in
Product Height
11.5 in
Product Width
19 in
Product Weight
55 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. Can be field modified to meetNEMA 3R rainproof requirements when a factory provided drain hole is opened.
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
200A
HP rating - max
50, 50/ 125, 150 hp (1/3PH @480, 600 V)
NEMA rating
NEMA 12/3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible without neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH364FDK
Selling Policy 25-000 - Distribution and Control Products and Services
Enclosure and construction provide rugged service in harsh environments. The painted galvanized steel NEMA 12/NEMA 3R enclosure shields delicate switchgear from dust, moisture, and corrosion, reducing maintenance cycles. This results in longer intervals between service outages and less frequent replacements in automotive, metal processing, and water treatment facilities. The 200 A amperage rating with three-pole, three-wire design and Class H fusible elements deliver precise, dependable fault interruption. The device supports up to 50/125 and 150 hp at 480–600 V for 1/3PH motors, enabling direct motor disconnects and simplified motor control schemes. It also accepts conductor sizes from #6 to 300 kcmil Cu/Al, delivering flexible wiring options for large feeders. Fusible without neutral with Class H fuse ensures selective protection and reduces nuisance tripping. UL Listed and NEC 230.62 barrier compliance help meet safety codes during audits and in new builds. Service entrance suitability with optional lug kits simplifies utility feeding. The ability to field modify to NEMA 3R rainproof with a factory drain hole opens outdoor installation without requiring a specialized enclosure. Three-pole, three-wire configuration supports flexible wiring layouts and 600 V operation; conductors from #6 to 300 kcmil Cu/Al accommodate motor feeders and power distribution. Warranty and Eaton support assist procurement and long-term maintenance planning; the Selling Policy 25-000 provides one year from installation or 18 months from shipment, whichever occurs first, helping protect capital investment.
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FAQs
The DH364FDK is ideal for service entrances, motor feeders, and equipment disconnects in industrial and commercial facilities. With a 200 A rating, 600 V capability, and a NEMA 12/3R enclosure, it provides safe, code-compliant isolation in dusty or damp environments while supporting up to 150 hp motors at higher voltages. This makes it well-suited for HVAC, pumps, conveyors, and general plant distribution where reliable power shutoff is critical.
Install the DH364FDK as a service entrance disconnect using the optional neutral or ground lug kit. Ensure compatibility with the NEC 230.62 barrier and, if outdoor exposure is expected, consider field modification to 3R rainproof via the factory drain hole. Use three-pole, three-wire wiring and Cu/Al conductors in the range #6–300 kcmil, following Eaton installation guidelines for proper torque and grounding to maximize safety and reliability.
The unit is rated for 200 A continuous operation with a 600 V maximum. It is a three-pole, three-wire design with fusible Class H elements, without a neutral. It supports motor loads up to 50/125/150 hp at 480–600 V for 1/3-phase services, and accepts conductors ranging from #6 to 300 kcmil Cu/Al, enabling flexible, scalable power distribution for a wide range of industrial applications.
The DH364FDK is UL Listed and constructed to NEC 230.62 barrier requirements, ensuring compliance with safety and electrical installation standards. The NEMA 12 and optional NEMA 3R configurations broaden environmental suitability for dust, moisture, and outdoor use. These certifications help with code compliance, insurance requirements, and smoother project approvals across industrial facilities.
Durable painted galvanized steel construction reduces corrosion-related maintenance and extends service life in harsh environments. The fusible Class H design provides reliable short-circuit protection, minimizing downtime. The unit’s warranty (one year from installation or 18 months from shipment) and Eaton support reduce lifecycle risk, while the field-mod compatible features enable adaptable outdoor installations without costly enclosure changes.