Eaton DD366NWKW-00V3 Safety Switch - UL Listed 4X
Part Number: DD366NWKW-00V3
Quick Summary
Eaton double door safety switch provides safe, controlled isolation for 3-phase industrial power systems in harsh environments. When downtime or miswiring threaten productivity, a robust fused design with a visible voltage indicator minimizes setup errors and speeds maintenance. This model is UL Listed and features a NEMA 4X enclosure for washdown resistance, plus Class H fuse provisions to handle demanding motor loads. Designed for motor control centers and heavy machinery, it offers reliable protection with straightforward installation and compatibility advantages that reduce wiring complexity and total cost of ownership. Its high-current capability supports large motors while preserving wiring layouts and serviceability across facilities.
Product Information
Extended Description
DD366NWKW-00V3 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line and 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-00V3
UPC
786679184820
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 line and load side, 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 - DD366NWKW-00V3
Feature fusible with neutral for safer fault clearing → Business Impact protects personnel and equipment during startup and fault events → Application three-phase motor circuits up to 600 A at 600 V. Feature NEMA 4X enclosure in 304 stainless steel → Business Impact delivers corrosion and washdown resistance, reducing maintenance downtime and replacement costs → Application harsh-industrial environments like food processing and chemical plants. Feature Voltage indicator line and load side with window → Business Impact enables rapid status checks and safer energization → Application line/load monitoring in busy motor control rooms. Feature Three-pole, four-wire configuration with 600 V rating and HP up to 400–500 hp → Business Impact supports large motors with compact wiring layouts → Application motor drives and heavy machinery across process lines. Feature UL Listed certification and Eaton warranty support → Business Impact reassurance on compliance and service continuity → Application essential for regulated facilities and long-term asset protection.
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FAQs
DD366NWKW-00V3 is a three-pole, four-wire fused safety switch rated for 600 A at 600 V, making it well-suited for 3-phase distribution and motor circuits. Ensure your panel or MCC has compatible bus configurations and that wiring uses the specified neutral and ground arrangements to maintain UL and NEMA compliance.
The enclosure is NEMA 4X and constructed from 304 stainless steel, providing superior washdown resistance and corrosion protection. UL Listed certification further confirms reliable performance in demanding facilities such as food and beverage, chemical processing, and outdoor installations.
Yes. With a max HP rating of 400–500 hp for 3-phase service at 480/600 V and a 600 A current rating, the DD366NWKW-00V3 is designed for motor control centers, conveyors, pumps, and other high‑load motor drives, delivering dependable protection with straightforward wiring.
Eaton offers a warranty under policy 25-000, providing one year from installation or 18 months from shipment, whichever occurs first. This, combined with UL compliance and the documented spare-part availability, supports ongoing maintenance and asset reliability.
The voltage indicator on the line and load sides with a visual window enables quick status verification without opening the enclosure, reducing troubleshooting time and improving safety during maintenance and reset sequences on high-current lines.