Eaton DD364NWKW Fused Safety Switch - NEMA 4X
Part Number: DD364NWKW
Quick Summary
Eaton DD364NWKW is a fused safety switch that provides heavy-duty electrical isolation for industrial control panels. The rugged design helps prevent unplanned downtime by delivering reliable protection in challenging environments where reliability matters most. UL Listed and NEMA 4X rated with a 304 stainless steel enclosure ensure washdown resilience and long service life in corrosive or dusty facilities. With a three-pole, four-wire configuration rated at 600 V and a 200 A amperage, it supports safe, scalable automation while simplifying maintenance and compliance. This solution is ideal for panel builders and OEMs seeking certified, dependable protection with a compact footprint and straightforward installation.
Product Information
Extended Description
DD364NWKW Eaton: Eaton Double door single-throw fused safety switch, 200 A, NEMA 4X, Class H, Fusible with neutral, Three-pole, Four-wire, 600 V, Max Hp: 50, 50/ 125, 150 hp (1/3PH @480, 600 V), #6-300 kcmil
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD364NWKW
UPC
786679174449
Product Length/Depth
49.9 in
Product Height
11.62 in
Product Width
17.18 in
Product Weight
85 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 with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty double door safety switch
Amperage Rating
200A
Fuse class provision
Class H
HP rating - max
50, 50/ 125, 150 hp (1/3PH @480, 600 V)
NEMA rating
NEMA 4X
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 - DD364NWKW
Feature: Fusible with neutral configuration. Business Impact: Provides controlled shutdown and fault isolation, reducing arc-flash exposure and equipment damage. Application: Ideal for control panels in packaging lines or assembly machines where predictable fuse protection is required. Feature: Three-pole, four-wire wiring. Business Impact: Simplifies grounding, wiring harness design, and safe interlocking, enabling cleaner panel layouts. Application: Motor control centers and drive-equipped panels in manufacturing facilities. Feature: 200 A amperage rating. Business Impact: Supports high-load applications with reduced need for oversizing protective devices, lowering total cost of ownership. Application: Heavy-duty conveyors, presses, and automated material handling. Feature: 600 V voltage rating. Business Impact: Compatibility with common industrial power systems ensures seamless integration with existing equipment. Application: Power distribution for 480/600 V automation environments. Feature: NEMA 4X enclosure and 304 stainless steel. Business Impact: Superior washdown and corrosion resistance minimizes maintenance and extends service life. Application: Food & beverage, chemical processing, and outdoor or damp production floors. Feature: UL Listed and rugged construction. Business Impact: Certified safety and reliability support regulatory compliance and faster procurement approvals. Application: OEM panel builds and retrofit projects requiring proven protection and traceable standards. Feature: Fusible with neutral configuration and window feature. Business Impact: Clear fault visibility plus precise fusing options improve maintenance planning and downtime recovery. Application: Industrial applications needing quick visual verification and safe operation.
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FAQs
For 600 V, 200 A installations, ensure adequate enclosure mounting clearance and a level surface for the 49.9 in length. Use #6-300 kcmil conductors as specified and wire the device as a three-pole four-wire switch with neutral. Verify that the NEMA 4X seal remains intact and that the unit is UL Listed to meet local safety standards.
NEMA 4X enclosures provide protection against corrosion, windblown dust, and splashing water, while 304 stainless steel offers superior corrosion resistance. Together they extend service life in harsh environments such as food and beverage plants or chemical processing, reducing maintenance cycles and ensuring reliable operation between outages.
Class H fuses are designed for high-impedance faults and provide rapid yet predictable interrupting capability, protecting downstream equipment from severe faults. This translates to minimized downtime, controlled fault clearing, and improved system reliability in motor loads and process lines within 600 V distributions.
Yes. The maximum horsepower ratings listed are 50, 50/125, and 150 hp for 1/3PH at 480/600 V, allowing safe isolation for a wide range of motor drives. When selecting, ensure motor nameplate ratings align with the 200 A and fuse configuration to maintain proper protection and safe start-up conditions.
The unit carries Eaton's warranty policy: one year from the date of installation or eighteen months from shipment, whichever occurs first. Technical support is available through Eaton's distributor network, with guidance on installation, wiring, and replacement fuse compatibility to help maximize uptime and ensure regulatory compliance.