Eaton DD368FWKW Fused Safety Switch - NEMA 4X
Part Number: DD368FWKW
Quick Summary
Eaton double door single-throw fused safety switch protects 600 V power circuits in demanding industrial applications. Engineers often grapple with uptime, safe isolation, and rugged durability when protecting large drives and feeders. UL Listed with a NEMA 4X 304 stainless steel enclosure provides corrosion resistance and weatherproof protection in harsh plants and outdoor installations. It also offers a fusible without neutral configuration, three-pole architecture, and a 1200 A amperage rating to deliver clean, code-compliant isolation for heavy motor loads up to 500 hp at 480/600 V. A windowed, heavy-duty double-door design improves visibility during maintenance, while its footprint integrates with standard enclosure footprints for fast retrofit and straightforward service.
Product Information
Extended Description
DD368FWKW Eaton: Eaton Double door single-throw fused safety switch, 1200 A, NEMA 4X, 304 stainless steel, Class L, Fusible without neutral, Three-pole, Three-wire, 600 V, Max Hp: 500, 500 hp (3PH @480/600 V), (4)#1/0-(4)750 kcmil
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD368FWKW
UPC
786679184875
Product Length/Depth
27.18 in
Product Height
43.11 in
Product Width
91.02 in
Product Weight
575 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
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Fuse configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Heavy duty double door safety switch
Amperage Rating
1200A
Fuse class provision
Class L
HP rating - max
500, 500 hp (3PH @480/600 V)
Voltage rating
600 V
Product Category
Watertight
Special features
w/ window
Flex Center Customized Double Door Switch with Voltage Indicator and Safe-Test Point
Flex Center Customized Double Door Switch with Voltage Indicator and Safe-Test Point
Flex Center Customized Double Door Switch with Voltage Indicator and Safe-Test Point
Flex Center Customized Double Door Switch with Voltage Indicator and Safe-Test Point
Flex Center Customized Double Door Switch with Voltage Indicator and Safe-Test Point
Eaton Specification Sheet - DD368FWKW
Feature → Business Impact → Application: Fusible without neutral configuration simplifies wiring and reduces panel space while maintaining strict safety isolation, enabling clean code-compliant feeder protection for large motors and variable-speed drives. This translates to faster installations and easier maintenance in high-current motor control centers. Application: large conveyor lines and process motors in manufacturing facilities. Feature → Business Impact → Application: 1200 A amperage rating paired with a 500 hp max (3PH @480/600 V) supports high-load applications without paralleling switches, reducing total cost of ownership while improving motor protection strategies. Application: heavy-duty fans, pumps, and mill drives. Feature → Business Impact → Application: NEMA 4X enclosure made from 304 stainless steel delivers corrosion and washdown resistance, extending life in outdoor or humid environments and lowering replacement cycles. Application: outdoor substations and washdown areas. Feature → Business Impact → Application: Windowed enclosure enhances predictive maintenance by allowing quick status checks without door opening, reducing downtime during inspections. Application: routine maintenance in food processing and pharmaceutical facilities. Feature → Business Impact → Application: UL Listed certification and rugged construction provide regulatory confidence and a safer work environment, supporting compliance programs and worker protection. Application: plant-wide safety integrators and procurement planning. Feature → Business Impact → Application: Three-pole, three-wire design with fusible configuration delivers reliable fault isolation and simplified wiring diagrams, improving system reliability and technician onboarding. Application: motor control and distribution panels across industrial plants.
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FAQs
The DD368FWKW is a three-pole, three-wire fused safety switch rated for 600 V. It uses a fusible without neutral configuration, enabling straightforward integration with 3PH circuits and motor feeders up to 1200 A. It is designed for standard industrial control panels and can be wired with commonly used 600 V three-phase power distribution setups found in machine rooms and substations.
The switch provides a 1200 A amperage rating and supports up to 500 hp for 3-phase motors at 480/600 V. This enables protection for large motors such as conveyors and pumps without resorting to multiple switches, reducing wiring complexity and improving coordination with upstream protection devices.
Yes. It features a NEMA 4X enclosure constructed from 304 stainless steel, delivering corrosion resistance and watertight protection suitable for harsh, outdoor, or washdown areas. This helps maintain reliability in plants with exposure to moisture, dust, and chemicals.
The unit is UL Listed and features a NEMA 4X rated enclosure, with a corrosion-resistant stainless steel body and Class L fuse protection. These certifications support compliance programs and provide assurance for safety-conscious facilities and regulated industries.
Eaton offers a warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. For ongoing reliability, rely on UL Listed construction, a window for quick status checks, and a robust enclosure that minimizes maintenance downtime and service costs.