Eaton DD366NDKW-00V2 Fused Safety Switch - UL Listed
Part Number: DD366NDKW-00V2
Quick Summary
Eaton DD366NDKW-00V2 fused safety switch provides safe isolation for high-demand industrial equipment. In today’s plants, reliability and personnel safety hinge on equipment that can be trusted during routine maintenance and fault events. This unit is UL Listed and designed for NEMA 12/3R environments, delivering rugged protection in dusty, wet, or harsh shop floors. With a three-pole, four-wire configuration and fusible with neutral design, it supports up to 600 A at 600 V while handling heavy horsepower motors (400–500 hp for 3PH @480/600 V). For engineers and procurement teams, the combination of robust enclosure, clear load-side indicators, and warranty coverage translates into reduced downtime, simpler compliance, and predictable total cost of ownership.
Product Information
Extended Description
DD366NDKW-00V2 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator load side, 600 A, NEMA 12/3R, 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
DD366NDKW-00V2
UPC
786679184776
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 12, NEMA 3R
Enclosure material
Painted galvanized 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
Dust tight
Special features
V indicator load side, w/ window
ARMS Enclosed Circuit Breaker
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ARMS Enclosed Circuit Breaker
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Eaton Specification Sheet - DD366NDKW-00V2
Feature: 600 A amperage rating with a three-pole, four-wire design and fusible with neutral. → Business Impact: Enables safe, coordinated circuit isolation and selective protection, reducing fault propagation and downtime. → Application: Main power distribution in manufacturing lines and process equipment where high current and reliable isolation are required. Feature: Load-side voltage indicator with a window. → Business Impact: Provides immediate visibility during maintenance, minimizing guesswork and mis-wiring risk. → Application: Control panels and machine isolation points where quick verification of status matters. Feature: NEMA 12, NEMA 3R enclosure with painted galvanized steel. → Business Impact: Offers durable dust and moisture protection, extending service life in harsh environments. → Application: Industrial plants, outdoor or semi-enclosed spaces subject to dust, splash, or humidity. Feature: 600 V maximum rating with HP capability of 400–500 hp (3PH @480/600 V). → Business Impact: Supports medium-to-high power motors without extensive panel changes, improving project timelines. → Application: Conveyors, mixers, and fans in manufacturing and processing facilities. Feature: UL Listed certification and 25-000 warranty. → Business Impact: Enhances regulatory compliance and long-term cost of ownership with dependable support. → Application: Systems where safety approvals and vendor assurances drive maintenance planning and procurement choices.
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FAQs
For retrofit or new installs, ensure three-pole, four-wire connections and space for a 19.31 in depth, 25.32 in height, and 77.96 in width enclosure. Use conductors sized up to #2 to 750 kcmil as specified, and respect proper clearances around the load-side indicator window to maintain visibility and safe operation.
Confirm 600 A amperage rating, 600 V voltage rating, three-pole configuration, fusible with neutral, and Class H fuse protection. Also verify the NEMA 12/3R enclosure rating and UL Listed certification to ensure suitability for dusty or wet environments and compliance with safety standards.
Yes. The NEMA 12, NEMA 3R enclosure provides dust and moisture protection appropriate for indoor industrial settings and exterior-mounted applications, helping maintain performance and extend service life in challenging plants.
The unit is UL Listed, indicating compliance with recognized safety standards. It also employs a NEMA-rated enclosure suitable for dusty and wet environments, which supports regulatory and internal safety requirements for industrial installations.
A robust enclosure, integrated load-side voltage indicator, and a solid warranty reduce downtime and maintenance complexity. Long-term ROI comes from improved uptime, safer maintenance procedures, and predictable lifecycle costs, supported by UL Listed certification and durable construction.