Eaton DD327NWKW Double Door Single-Throw Fused Safety Switch - NEMA 4X
Part Number: DD327NWKW
Quick Summary
The Eaton DD327NWKW double door single-throw fused safety switch protects motors and feeders in industrial control panels. Maintenance teams often face lengthy lockout procedures and unsafe isolation when servicing energized equipment. UL Listed certification, a NEMA 4X stainless enclosure, and Class L fuse protection ensure reliable safety and compliance in challenging environments, including washdown areas. This watertight, heavy-duty line isolation switch reduces downtime and supports compliance-driven maintenance, while offering strong compatibility with standard electrical protections and high-performance motor control applications.
Product Information
Extended Description
DD327NWKW Eaton: Eaton Double door single-throw fused safety switch, 800 A, NEMA 4X, 304 stainless steel, Class L, Fusible with neutral, Three-pole, Four-wire, 240 V, Max Hp: 500, 500 hp (3PH @480/600 V), (4)#1/0-(4)750 kcmil
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD327NWKW
UPC
786679173770
Product Length/Depth
86.73 in
Product Height
22.16 in
Product Width
26.57 in
Product Weight
300 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
Catalog Notes
Double Door Isolation Switch
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
800A
Fuse class provision
Class L
HP rating - max
500, 500 hp (3PH @480/600 V)
Voltage rating
240V
Product Category
Watertight
Special features
w/ window
Double Door Line Isolation Safety Switch
Double Door Line Isolation Safety Switch
Double Door Line Isolation Safety Switch
Double Door Line Isolation Safety Switch
Double Door Line Isolation Safety Switch
Eaton Specification Sheet - DD327NWKW
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The DD327NWKW delivers an 800A amperage rating at 240V in a three-pole, four-wire configuration, enabling reliable protection for large motor feeders and process lines. This translates to improved safety, reduced fault propagation, and faster maintenance shutdowns in industrial facilities, especially in pump stations and conveyor lines that demand high current isolation. Application: Motor control centers and critical process panels where robust disconnect capability is required. Feature → Business Impact → Application: The enclosure is a NEMA 4X rated, 304 stainless steel construction, providing excellent corrosion resistance and washdown durability. This minimizes corrosion-related maintenance and extends service life in food processing, chemical plants, and outdoor installations. Application: Harsh or wet environments needing durable protection. Feature → Business Impact → Application: Fusible with neutral fuse configuration and Class L protection support selective coordination and reliable de-energization. This helps prevent unnecessary outages and simplifies fault isolation during maintenance. Application: Power distribution networks requiring reliable, code-compliant fusing. Feature → Business Impact → Application: Double door isolation with a window offers quick visual status checks and safer operation. This reduces entry risks during maintenance and accelerates routine inspections in control panels or MCCs. Application: Line isolation in high-availability production lines. Feature → Business Impact → Application: 86.73 in length, 22.16 in height, 26.57 in width, and 300 lb weight reflect a rugged, industrial-grade solution designed for heavy-duty installations. This ensures stable mounting, reduces vibration-related wear, and supports long service life in demanding environments. Application: Large electrical rooms and outdoor installations requiring a robust, lockable disconnect.
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FAQs
The DD327NWKW is a three-pole, four-wire, fusible with neutral safety switch designed for 800A service at 240V. It supports standard panel mounting with a NEMA 4X stainless steel enclosure and a window for status visibility. This configuration enables straightforward wiring into motor control centers and process panels while maintaining code-compliant isolation.
This unit is UL Listed and features a NEMA 4X enclosure, suitable for washdown and harsh environments. The fuse configuration is Class L, providing reliable fuse protection and selective coordination. These certifications help ensure electrical safety, compliance with enclosure ratings, and compatibility with standard industrial installation practices.
Yes. The enclosure is rated NEMA 4X and constructed from 304 stainless steel, offering superior corrosion resistance and washdown durability. This makes it well-suited for food processing, chemical facilities, and outdoor installations where moisture or corrosive exposure is a concern, while maintaining safety isolation performance.
Eaton provides a warranty aligned with Selling Policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, the fused with neutral design simplifies replacement of fuses, and the UL Listed, durable enclosure reduces recurring service intervals in demanding operations.
The DD327NWKW delivers reliable, code-compliant isolation with high current capacity (800A) and robust enclosure (NEMA 4X, 304 stainless). This reduces unplanned downtime due to faults or exposure, lowers maintenance frequency, and minimizes risk to personnel, contributing to improved uptime, safer operations, and a favorable lifecycle cost in high-demand facilities.