Eaton DH364FWK Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH364FWK
Quick Summary
The Eaton DH364FWK heavy duty fusible safety switch is designed to isolate high-current circuits quickly and safely in demanding industrial environments. Operators and maintenance teams often struggle with corrosion, outdoor exposure, and difficult wiring during service upgrades or new installations. UL Listed protection, the NEMA 4X enclosure, and 304 stainless steel construction help ensure reliability in harsh environments. The three-pole, three-wire design with Class H fuses supports service entrances and rugged motor loads, while 200 A and 600 V ratings cover a broad range of applications. This model pairs strong protection with installation flexibility and long-term uptime, making it a dependable choice for industrial protection & control needs.
Product Information
Extended Description
DH364FWK Eaton: Eaton Enhanced visible blade single-throw safety switch, Corrosion resistant, 200 A, NEMA 4X, 304 stainless, Class H, 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
DH364FWK
UPC
782113206905
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.
Certifications
UL Listed
Catalog Notes
Suitable for service entrance use with a neutral or ground lug kit installed
Enclosure
NEMA 4X
Enclosure material
304 stainless 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 4X (Stainless)
Voltage rating
600 V
Product Category
Heavy Duty, Fusible without neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH364FWK
Selling Policy 25-000 - Distribution and Control Products and Services
200 A amperage rating and 600 V capability deliver robust protection for large motors and demanding loads, with a three-pole, three-wire configuration for reliable isolation; this reduces arc flash exposure and minimizes downtime during faults. In practice, the fusible without neutral design simplifies wiring in compact switchgear footprints and supports Class H fusing for consistent overcurrent protection. The NEMA 4X enclosure and 304 stainless steel construction provide corrosion resistance for outdoor and washdown environments, lowering maintenance costs and extending service life across harsh plants and coastal facilities. UL Listed certification reinforces compliance with industry standards, while the 37.5 in depth and 19 in width fit standard installation footprints and enable service-entrance configurations with lug kit options. With HP ratings up to 50/125/150 HP (1/3PH at 480/600 V) and conductor capacity for #6-300 kcmil Cu/Al, this switch accommodates a wide range of motor drives and wiring layouts, delivering reliability and installation flexibility for industrial protection and control.
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FAQs
When mounting the DH364FWK, ensure access to the front operating handle and adequate surrounding clearance per NEMA 4X requirements. Verify three-pole, three-wire wiring with the fusible configuration (without neutral) and plan for a neutral or ground lug kit if service entrance use is anticipated. The enclosure’s 37.5 inch depth and 19 inch width fit common rack and panel layouts, while the 304 stainless construction supports outdoor or washdown environments.
The DH364FWK is rated for 200 A at up to 600 V and supports motor loads up to 50, 50/125, and 150 HP (1/3PH at 480/600 V). It uses Class H fuses and is fusible without neutral, with three poles and three wires for robust protection and straightforward integration into existing power distribution schemes.
Yes. The catalog notes indicate suitability for service entrance use, and the unit is designed for MCC and motor control applications. It supports service-entrance configurations with an available neutral or ground lug kit, enabling compliant and reliable disconnect solutions in building or plant power distribution systems.
The DH364FWK is UL Listed and features a NEMA 4X (304 stainless) enclosure, ensuring compliance with recognized safety and environmental standards. These certifications matter for regulatory acceptance, reduced risk during audits, and reliability in corrosive or washdown environments typical of industrial facilities.
The corrosion-resistant 304 stainless enclosure minimizes maintenance in harsh environments, extending service intervals and reducing downtime. Its rugged 200 A, 600 V rating, and high HP compatibility support longer life for motor control applications, while UL Listing and durable construction help protect against costly regulatory or reliability issues over the equipment’s lifecycle.