Eaton DD326FWKW fused safety switch - UL Listed
Part Number: DD326FWKW
Quick Summary
Eaton double door single-throw fused safety switch provides reliable isolation for industrial control panels. When downtime or protection failures drive maintenance costs, engineers need robust, plug-and-play protection that won’t slow project timelines. This unit carries UL Listed certification and features a NEMA 4X watertight enclosure with a 304 stainless steel body, plus a three-pole fusible design for safety. Operating at 240 V with 600 A and up to 500 hp (3PH @480/600 V), it supports demanding motors while meeting industry standards and installation best practices. In short, it's a reliable, compliant solution that pairs with common motor control configurations to minimize wiring changes and maintenance overhead.
Product Information
Extended Description
DD326FWKW Eaton: Eaton Double door single-throw fused safety switch, 600 A, NEMA 4X, Fusible without neutral, Three-pole, Three-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
DD326FWKW
UPC
786679184301
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 without neutral
Number Of Poles
Three-pole
Number of wires
3
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
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 - DD326FWKW
Feature: 600 A amperage rating for three-pole, three-wire configuration. Business Impact: Supports high-demand motor control without overheating or nuisance trips, improving line efficiency and reducing unplanned downtime. Application: Suitable for large footprint motor control centers and processing lines in heavy industry. Feature: Fusible without neutral fuse configuration (Class H). Business Impact: Simplifies protection schemes, lowers replacement parts inventory, and enhances selective coordination in power distribution. Application: Ideal where motor starter protection must be precise and maintainable. Feature: NEMA 4X stainless steel enclosure (304 grade). Business Impact: Delivers superior corrosion resistance and washdown capability, extending service life in harsh environments. Application: Food & beverage, pharmaceutical, and outdoor installations. Feature: UL Listed certification and heavy-duty design. Business Impact: Ensures regulatory compliance and reduces supplier risk, smoothing procurement and safety audits. Application: Industrial facilities with stringent safety and quality requirements. Feature: High horsepower rating up to 400–500 hp at 480/600 V. Business Impact: Enables direct motor control of large drives without external soft starts, cutting installation complexity and cost. Application: Motor control centers, pumps, and compressors. Feature: Window feature for fuse status visibility. Business Impact: Provides quick visual confirmation during maintenance, reducing diagnostic time. Application: Plant floor maintenance and panel servicing.
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FAQs
The DD326FWKW is a three-pole, fusible-without-neutral unit designed for 240 V systems up to 600 A, with a NEMA 4X stainless steel enclosure. Plan enough mounting space for its substantial footprint (heavy-duty, door-type enclosure) and ensure proper wiring access and clearance for service. The window feature aids fuse inspection without exposing the interior during operation.
Key specs include a 600 A amperage rating, three-pole three-wire configuration, fusible without neutral, 240 V operation, and a HP rating up to 400–500 hp at 480/600 V. The unit is UL Listed and designed for use with Class H fuses, which supports reliable protection and coordination with downstream equipment.
Yes. The enclosure is NEMA 4X rated and constructed from 304 stainless steel, providing corrosion resistance and ingress protection appropriate for washdown areas, damp environments, and outdoor installations when properly mounted.
This product is UL Listed and features a NEMA 4X-rated enclosure with a corrosion-resistant stainless steel body. These attributes help meet regulatory and safety requirements for many industrial facilities, simplifying audits and compliance reporting.
The 600 A, three-pole design supports robust motor protection with minimal nuisance trips, reducing downtime. The 304 stainless steel enclosure and UL certification minimize corrosion-related failures and simplify maintenance. The window status indicator speeds fault diagnosis, and the solid build lowers replacement frequency and service costs over the product lifespan.