Eaton DD326NWKW-00V3 Fused Safety Switch - UL Listed
Part Number: DD326NWKW-00V3
Quick Summary
The Eaton DD326NWKW-00V3 fused safety switch delivers reliable protection for heavy-duty electrical systems in industrial facilities. Facilities often struggle with unsafe isolation and miswired panels that trigger costly downtime. UL Listed certification and a NEMA 4X stainless steel enclosure help withstand washdowns and harsh environments. Designed for three-pole, four-wire configurations at 240 V, it supports fast, compliant installation and predictable performance for plant-wide protection. With built-in voltage indicators on both line and load sides and a robust neutral fuse configuration, it reduces misoperation and maintenance time. This combination delivers measurable business value by improving safety, uptime, and ease of procurement for OEMs and maintenance teams.
Product Information
Extended Description
DD326NWKW-00V3 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line and load side, 600 A, NEMA 4X, w/ neutral, Three-pole, Four-wire, 240 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
DD326NWKW-00V3
UPC
786679184011
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
240V
Product Category
Watertight
Special features
V indicator line and load side, w/ window
Double Up on Safety
Double Up on Safety
Double Up on Safety
Double Up on Safety
Double Up on Safety
Eaton Specification Sheet - DD326NWKW-00V3
Selling Policy 25-000 - Distribution and Control Products and Services
Three-pole, four-wire fusible configuration with neutral enables full isolation of heavy loads, supporting safe startup and shutdown in demanding lines. Business impact: Enhances compliance with lockout/tagout requirements and minimizes fault propagation. Application: Effective in motor control centers, feeder panels, and machine bays across manufacturing and process industries. 600 A amperage rating and 240 V voltage rating accommodate large motors and equipment. Business impact: Enables higher horsepower application with reduced downstream protection coordination complexity. Application: Suitable for 400-500 hp machines at 480/600 V and general power distribution in plant rooms. 304 stainless steel enclosure with a NEMA 4X rating offers corrosion resistance and washdown durability. Business impact: Extends service life in harsh environments, lowers maintenance costs, and improves uptime. Application: Food processing, water treatment, and outdoor or damp locations. Voltage indicator on both line and load sides with a viewing window provides immediate status at a glance. Business impact: Reduces misoperation and speeds fault diagnosis during routine inspection or emergency isolation. Application: Field verification during startup, commissioning, or after maintenance. UL Listed certification and Class H fuse provision ensure regulatory compliance and reliable fault protection. Business impact: Meets safety standards and simplifies supplier qualification, reducing risk in procurement. Application: Industrial protection and circuit control across sectors relying on safe, code-compliant disconnection. Compatibility and installation advantages include a heavy-duty design, 265 lb weight, and straightforward wiring for three-pole, four-wire arrangements. Business impact: Reduces installation time and improves serviceability, lowering total cost of ownership. Application: Steel mills, chemical plants, and critical process lines requiring robust, conformant safety switches.
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FAQs
DD326NWKW-00V3 is a three-pole, four-wire fused safety switch with neutral designed for 240 V systems up to 600 A. When planning installation, verify the mounting footprint and bolt pattern compatibility with your panel, ensure the enclosure supports a NEMA 4X stainless steel unit, and confirm adequate clearance for line and load terminals, the voltage indicator window, and neutral connections.
Key specs include the 600 A amperage rating, 240 V voltage rating, and the HP capability of 400–500 hp at 480/600 V. The Class H fuse provision and UL Listed certification further influence selection by ensuring safe, code-compliant protection and reliable fault interruption for large motors and feeders in continuous-duty applications.
Yes. The DD326NWKW-00V3 uses a NEMA 4X enclosure and 304 stainless steel construction, delivering superior resistance to washdowns and corrosive exposure. This makes it well-suited for food processing, water treatment, and outdoor or damp locations where durability and reliability are critical.
The unit is covered by Eaton's warranty policy, offering one year from the date of installation or eighteen months from shipment, whichever occurs first. With UL listing and rugged materials, the switch supports long service life and predictable maintenance intervals, helping protect total cost of ownership in demanding plants.
Voltage indicators on both the line and load sides with a viewing window provide immediate status visibility, enabling quick verification of isolation and energization. This reduces misoperation during maintenance, accelerates fault location, and supports safer, faster commissioning and turnaround times on complex feeders and motor circuits.