Eaton DH663FWKW Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH663FWKW
Quick Summary
Eaton DH663FWKW heavy duty fusible safety switch is designed to safely disconnect high-current circuits in industrial power distribution. Engineers and maintenance teams often contend with corrosion, harsh environments, and complex wiring in rugged facilities; this unit addresses those challenges with a corrosion-resistant 304 stainless steel NEMA 4X enclosure and cartridge fuse protection. It carries UL Listed certification and a robust six-pole, six-wire design, ready for demanding installations. With a 100 A rating and a broad HP range, it delivers reliable motor protection and power distribution while reducing downtime. This combination supports compliant, easy-to-maintain systems and offers tangible value for industrial protection programs and safety standards.
Product Information
Extended Description
DH663FWKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Corrosion resistant, visible blade, 6 blade, 100 A, NEMA 4X, Cartridge, Six-pole, Six-wire, 600 V, Max Hp: 15-30, 25-60, 30-75 hp (3PH @240, 480, 600 V), 600 V, #14-#1/0 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH663FWKW
UPC
786680181368
Product Length/Depth
29 in
Product Height
9 in
Product Width
17 in
Product Weight
39 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
Heavy Duty Safety Switch (HDSS), w/ Enhanced Visible Blade
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Fuse class provision
Cartridge
Fuse configuration
Fusible without neutral
Number Of Poles
Six-pole
Number of wires
6
Type
Heavy duty fusible safety switch
Amperage Rating
100A
HP rating - max
15-30, 25-60, 30-75 hp (3PH @240, 480, 600 V)
NEMA rating
NEMA 4X (Stainless)
Voltage - max
600 V
Voltage rating
600 V
Application
Heavy commercial and industrial
Series
K
Eaton Specification Sheet - DH663FWKW
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Six-pole, six-wire configuration provides comprehensive control and simplifies wiring → Business Impact: reduces field wiring errors and installation time, improves diagnostic clarity → Application: ideal for 3-phase circuits up to 600 V with cartridge fuse protection. Feature: NEMA 4X enclosure with 304 stainless steel construction → Business Impact: excellent corrosion resistance and suitability for wet or harsh environments → Application: heavy commercial and industrial applications requiring durable protection. Feature: UL Listed certification → Business Impact: ensures regulatory compliance and safety assurance for critical equipment → Application: facilities and processes that demand recognized safety standards. Feature: Amperage and HP rating up to 100 A and 15-75 hp (3PH @240/480/600 V) → Business Impact: compatible with a wide range of motors and loads, reducing parts variety → Application: motor control and power distribution in industrial lines. Feature: Cartridge fuse configuration → Business Impact: quick fuse replacement minimizes downtime and simplifies maintenance → Application: routine servicing in high-uptime environments. Feature: Enhanced visible blade (HDSS) concept → Business Impact: safer status indication and easier line troubleshooting → Application: high-availability installations in process and packaging lines.
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FAQs
Yes. The DH663FWKW is a six-pole, six-wire heavy duty fusible safety switch rated for 3-phase service up to 600 V and 100 A. It uses a cartridge fuse configuration and a NEMA 4X 304 stainless steel enclosure, making it suitable for industrial installations that demand robust protection and straightforward wiring.
Key specs include a 100 A amperage rating, HP range of 15-30, 25-60, 30-75 hp for 3-phase operation at 240/480/600 V, max voltage 600 V, and NEMA 4X (stainless) enclosure. It features six poles and six wires, with cartridge fuse protection and UL Listed certification for safety and compliance.
Yes. The enclosure is NEMA 4X rated and constructed from 304 stainless steel, providing excellent corrosion resistance and weather sealing. This makes it well-suited for heavy industrial, outdoor, and wash-down environments where durable protection of power distribution and safety systems is critical.
The DH663FWKW is UL Listed, offering recognized safety certification for industrial electrical protection. It also features a NEMA 4X stainless enclosure suitable for harsh environments and is designed for heavy commercial and industrial applications, aligning with standard industry compliance requirements for safety and reliability.
Cartridge fuse design enables quick, straightforward replacement with minimal downtime, improving mean time to repair (MTTR). The unit’s six-pole configuration supports modular wiring and easier diagnostics, while the UL Listed rating and durable 304 stainless enclosure reduce corrosion-related maintenance costs, contributing to a favorable total cost of ownership in high-uptime environments.