Eaton DD366NWKW-00V2 Fused Safety Switch - NEMA 4X
Part Number: DD366NWKW-00V2
Quick Summary
The Eaton DD366NWKW-00V2 fused safety switch is a rugged, industrial-grade protection device designed to isolate three-phase circuits in demanding environments. Operators often contend with bulky enclosures that slow down start-up and complicate routine maintenance; this unit's heavy-duty double-door design helps streamline servicing and reduces downtime. UL Listed and built with a NEMA 4X stainless steel enclosure, it is rated for washdown and corrosive environments while maintaining safety and compliance. The Class H fuse with neutral protection and a 600 V rating support reliable motor control and fault isolation across large distribution panels. For systems up to 600 A and motors up to 400–500 hp, it delivers scalable protection with long service life and predictable maintenance costs.
Product Information
Extended Description
DD366NWKW-00V2 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator load side, 600 A, NEMA 4X, Class H, Fusible with neutral, Three-pole, Four-wire, 600 V, Max Hp: 400, 500 hp (3PH @480/600 V), (1)#2(1)#2-(1)600, and (1)750 kcmil
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD366NWKW-00V2
UPC
786679184813
Product Length/Depth
19.31 in
Product Height
25.32 in
Product Width
77.96 in
Product Weight
265 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
600A
Fuse class provision
Class H
HP rating - max
400, 500 hp (3PH @480/600 V)
Voltage rating
600 V
Product Category
Watertight
Special features
V indicator load side, w/ window
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - DD366NWKW-00V2
Feature: 304 stainless steel enclosure with a NEMA 4X rating provides corrosion resistance and washdown compatibility, reducing maintenance costs and downtime in harsh environments. The business impact is longer service life and higher uptime for process lines and packaging equipment. Application: ideal for food and beverage, chemical, and outdoor installations where moisture and contaminants are present. Feature: Fusible with neutral and Class H fusing protects equipment and minimizes arc-flash risk, leading to safer startup sequences and lower spare-part spend. Application: motor feeders and service entrances in heavy industries. Feature: Three-pole, four-wire configuration ensures balanced protection for three-phase motors, simplifying wiring and improving fault clearance. Application: large-capacity pumps, conveyors, and fans. Feature: V indicator load side with window enables quick visual status checks, reducing diagnostic time during maintenance windows. Application: routine inspections and energized safety checks. Feature: 600 A, 600 V rating supports high-horsepower motors up to 400–500 hp at 480/600 V, enabling scalable protection for growing plants. Application: plant-wide motor control and distribution. Feature: UL Listed certification and durable construction meet procurement standards and regulatory audits. Application: compliance-driven purchasing and qualified vendor programs.
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FAQs
DD366NWKW-00V2 is a three-pole, four-wire, fusible safety switch rated for 600 A and 600 V, with a NEMA 4X stainless steel enclosure. Plan for a sturdy mounting base and adequate door clearance for the double-door design. Ensure feed conductors can be terminated up to 750 kcmil, and wire neutrals and loads per your motor control wiring diagrams.
Key ratings include 600 A amperage and 600 V voltage, with three-pole, four-wire configuration. It uses fusible with neutral protection and Class H fuses, providing rapid disconnection on fault and protecting downstream equipment. The unit supports motors up to 400–500 hp at 480/600 V and accepts large feeders, up to 750 kcmil, enabling scalable protection for industrial drive systems.
Yes. The DD366NWKW-00V2 uses a 304 stainless steel enclosure rated NEMA 4X, designed for washdown and corrosive environments. UL Listed certification adds compliance confidence for process plants and food-grade facilities. Its watertight construction and corrosion resistance help extend service life in challenging environments while maintaining safety and performance in motor control applications.
It is UL Listed and built with a NEMA 4X-rated enclosure using 304 stainless steel, supporting compliance with industry standards for safety and durability in industrial facilities. The product is designed to meet rigorous motor protection requirements and is compatible with standard Eaton accessories for improved integration in control panels.
Warranty is Eaton’s policy: one year from installation or 18 months from shipment, whichever occurs first. This, combined with its robust enclosure and high-capacity protection, reduces unplanned downtime and maintenance cost. The device supports long service life with minimal corrosion-related failures, helping optimize total cost of ownership in plant-wide protective-device strategies.