Eaton DH663FDKW Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH663FDKW
Quick Summary
Eaton heavy duty fusible safety switch DH663FDKW is designed to safely isolate and protect medium-voltage industrial circuits. Customers often struggle with downtime and safety gaps when switching heavy loads, making reliable isolation essential. UL Listed certification backs safety reliability, and the unit employs a NEMA 12/3R enclosure to withstand dust, moisture, and harsh environments. The six-pole, cartridge-fuse design supports 100 A at up to 600 V, making it suitable for motors across a broad HP range while simplifying installation in compact footprints. For manufacturers seeking durable protection and straightforward maintenance, this switch delivers robust performance and long-term value across industrial and heavy commercial applications.
Product Information
Extended Description
DH663FDKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Enhanced visible blade, 6 blade, 100 A, NEMA 12/3R, 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
DH663FDKW
UPC
786680181283
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 12, NEMA 3R
Enclosure material
Painted galvanized 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 12/3R
Voltage - max
600 V
Voltage rating
600 V
Application
Heavy commercial and industrial
Series
K
Enhanced Visible Blade is a defining feature of the DH663FDKW. It provides quick, at-a-glance status verification during routine operations and lockout procedures, reducing misoperation risks in busy control rooms. This translates into fewer unplanned shutdowns and safer maintenance windows in high‑volume manufacturing environments. Six-pole, six-wire cartridge fuse configuration delivers robust three-phase switching for demanding loads. Rated for 100 A and up to 600 V, HP ratings scale from 15–30 to 30–75 hp depending on voltage, enabling a single unit to service motor circuits across 240, 480, and 600 V without oversizing. Industry technicians benefit from a straightforward, standardized protection scheme that eases procurement and installation. Enclosure and enclosure material provide weather and dust protection in challenging sites. The unit features a NEMA 12, NEMA 3R enclosure built from painted galvanized steel, reducing corrosion exposure and maintenance costs, while ensuring compliance with harsh environment requirements in both indoor and outdoor installations. Compact footprint and weight support fast, safer installation. At 29 inches deep and 39 pounds, the DH663FDKW fits standard electrical frames and can be mounted in tight spaces without compromising safety. The unit’s cartridge fuse design simplifies replacement and service, lowering downtime during preventive maintenance. Durability and support are reinforced by UL Listed certification and Eaton's warranty policies. The one-year warranty from installation or 18 months from shipment provides business owners with predictable ROI, while service documentation and local support help technicians stay compliant and productive on the shop floor. Compatibility and installation advantages: The HDSS series with enhanced visible blade integrates with existing switchgear footprints and motor control centers. The 100 A rating and 600 V max suit a wide range of industrial applications, including heavy commercial equipment and conveyors, enabling a scalable protection strategy that grows with plant needs.
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FAQs
The DH663FDKW is a six-pole, six-wire, three-phase switch rated for up to 100 A and a maximum voltage of 600 V. It supports motor circuits across 240, 480, and 600 V, with HP ratings of 15–30 hp at 240 V, 25–60 hp at 480 V, and 30–75 hp at 600 V, making it suitable for a wide range of industrial motors.
Enhanced Visible Blade provides a clear visual indication of the switch status, reducing misoperation risk during lockout, start-up, or maintenance. This feature improves operator safety, speeds up inspections, and minimizes unplanned downtime in busy production environments.
Yes. The unit uses a NEMA 12, NEMA 3R enclosure constructed from painted galvanized steel, offering protection against dust and moisture in indoor and sheltered outdoor locations. Proper installation per local codes ensures reliable operation in challenging environments.
HP ratings are 15–30 hp at 240 V, 25–60 hp at 480 V, and 30–75 hp at 600 V for three-phase service. The switch is rated to 100 A and 600 V max, with six poles and six wires, aligning with common industrial motor control configurations.
The DH663FDKW is covered by Eaton's warranty of one year from installation or 18 months from shipment, whichever occurs first. UL Listed certification supports compliance, and Eaton provides documentation and local support to assist with maintenance and parts replacement when needed.