Eaton DD365FWKW Fused Safety Switch - NEMA 4X, 400A
Part Number: DD365FWKW
Quick Summary
The Eaton DD365FWKW fused safety switch delivers reliable isolation for three-phase electrical systems in demanding industrial environments. This solution helps prevent unexpected energization during maintenance, reducing downtime and safety risks for a variety of processing and packaging lines. UL Listed certification supports safe operation, while the NEMA 4X enclosure and 304 stainless steel construction provide durability in washdown and outdoor settings. With a fusible without neutral configuration and Class H fuses, it offers robust protection without complicating wiring, supporting streamlined installation and improved uptime for automation and power distribution projects.
Product Information
Extended Description
DD365FWKW Eaton: Eaton Double door single-throw fused safety switch, 400 A, NEMA 4X, Class H, Fusible without neutral, Three-pole, Three-wire, 600 V, Max Hp: 250, 350 hp (3PH @480/600 V), (2)#1/0(1)#1/0-(2)300 kcmil-#1/0, or (1)175 kcmil-#1/0
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD365FWKW
UPC
786679184585
Product Length/Depth
16.41 in
Product Height
24.32 in
Product Width
72.46 in
Product Weight
219 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
400A
Fuse class provision
Class H
HP rating - max
250, 350 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 - DD365FWKW
Feature: 400A amperage rating enables safe, high-load isolation for motor control centers and heavy equipment. Business Impact: reduces wiring complexity while delivering reliable protection for high-demand drives. Application: suitable for MCCs and process lines demanding robust disconnects. Feature: NEMA 4X enclosure with 304 stainless steel construction. Business Impact: withstands washdown, corrosion, and outdoor exposure, lowering replacement costs. Application: food & beverage, chemical processing, and outdoor installations. Feature: Fusible without neutral and Class H fuse provision. Business Impact: selective coordination and localized protection minimize nuisance trips and simplify maintenance. Application: motor circuits and critical loads with known fault current levels. Feature: Three-pole, three-wire configuration with clear, heavy-duty lugs. Business Impact: simplifies wiring, reduces installation time, and supports reliable fault clearing. Application: large-diameter feeders and three-phase motors. Feature: Large-value lugs for up to (2)#1/0(1)#1/0-(2)300 kcmil-#1/0 or (1)175 kcmil-#1/0 conductors. Business Impact: accommodates diverse conductor sizes, enabling flexible retrofits. Application: panel upgrades and new builds with wide conductor ranges. Feature: 400 A with 600 V rating and UL Listed protection. Business Impact: ensures compliance with electrical codes and reduces risk of code violations. Application: installation in industrial installations requiring certified protection. Finally, warranty and service options provide peace of mind, helping maintenance teams plan longer intervals between preventive actions.
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FAQs
The DD365FWKW is a three-pole, three-wire fused safety switch rated at 400 A and 600 V, with a fusible without neutral configuration. Install near motor feeders or MCCs, ensuring proper clearance, compatible bus and wiring lugs, and adherence to electrical codes. Its 16.41" depth, 24.32" height, and 72.46" width should be accounted for in panel layouts.
Key specs include 400 A amperage rating, 600 V voltage rating, Class H fuse provision, fusible without neutral configuration, three-pole design, and three-wire connections. It is UL Listed and designed for heavy-duty industrial use, offering reliable fault protection and straightforward integration with motor loads and control circuits.
Yes. The enclosure is rated NEMA 4X and constructed from 304 stainless steel, providing excellent corrosion resistance and washdown durability. This makes it suitable for outdoor installations and environments requiring strong environmental protection, such as food processing, chemical plants, and wastewater facilities.
The DD365FWKW carries UL Listed certification, indicating compliance with recognized safety standards for electrical equipment. This supports safe operation, easier code compliance, and streamlined procurement, particularly in regulated industrial facilities and critical process environments.
The robust NEMA 4X enclosure, stainless steel construction, and simple fusible configuration reduce maintenance cycles and replacement costs. Combined with UL Listings and a 1-year warranty, the switch lowers total cost of ownership by minimizing downtime, enabling faster troubleshooting, and ensuring long-term reliability in demanding automation projects.