Eaton DD326NWKW-00V1 Fused Safety Switch - UL Listed
Part Number: DD326NWKW-00V1
Quick Summary
Eaton DD326NWKW-00V1 fused safety switch provides safe isolation for three-phase power in industrial facilities. Maintainers often struggle with achieving reliable lockout, accurate line-side status, and durable protection in washdown environments. UL Listed, NEMA 4X enclosure, and 304 stainless steel construction deliver rugged protection and compliance in harsh plant conditions. By combining high-capacity performance with straightforward installation, it supports uptime, safety, and long-term cost efficiency for motor control and process lines.
Product Information
Extended Description
DD326NWKW-00V1 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line side, 600 A, NEMA 4X, Fusible with 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-00V1
UPC
786679183984
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 side, w/ window
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - DD326NWKW-00V1
The 600 A amperage rating with a fusible neutral on a three-pole, four-wire configuration enables direct, reliable isolation of large motor loads, reducing arc-flash exposure and improving fault-clearing performance in demanding applications. This configuration supports heavy drives and pumps while maintaining compliance with Class H fuse protection, translating to safer startup sequences and lower maintenance risk for critical processes in manufacturing and packaging lines. The 240 V rating and HP capability of up to 400–500 hp (three-phase at 480/600 V) ensure compatibility with common plant motors without resorting to mid-life equipment upgrades, saving capital and reducing downtime during motor commissioning and upgrades. The NEMA 4X enclosure in 304 stainless steel delivers corrosion resistance and washdown durability, making it ideal for outdoor substations, water/wastewater facilities, and food-and-beverage environments where cleanliness and reliability are paramount. The voltage indicator line side with a window enables rapid status verification without opening the enclosure, decreasing diagnostic time and enhancing safety during maintenance. A generous conductor range supports wiring up to #2 to 750 kcmil, accommodating future expansion and simplifying field wiring in panel-mounted control gear. With dimensions of 19.31 in depth, 25.32 in height, and 77.96 in width, plus a 265 lb weight, installation planning and hoisting considerations are straightforward, ensuring a robust, long-term solution that aligns with NEC and industry standards.
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FAQs
When installing the DD326NWKW-00V1, ensure adequate panel space for a wide enclosure, plan for a 265 lb unit, and provide proper lifting gear. Verify the three-pole, four-wire configuration with fusible neutral, and confirm line-side voltage indicator access without opening the enclosure. Compliance with NEMA 4X installation practices and an appropriate mounting surface will support environmental protection, while ensuring clearances conform to NEC guidelines for safe operation.
The switch supports up to 600 A and 240 V, with a maximum HP rating of 400–500 hp for 3-phase motors at 480/600 V. This means it can safely isolate large drive systems without oversized protections. The Class H fuse provision provides a defined arc-flash protection level, and the fusible-with-neutral configuration ensures proper fault current handling for heavy motor starts in process lines.
Yes. The DD326NWKW-00V1 uses a NEMA 4X enclosure made from 304 stainless steel, delivering corrosion resistance and washdown durability. This makes it well-suited for outdoor installations, water treatment, food and beverage processing, and other environments where exposure to moisture or cleaning agents is common, while maintaining UL listed safety standards.
The unit is UL Listed, a key certification for electrical safety and compliance in North American facilities. It features a one-year from installation or eighteen months from shipment warranty per Eaton policy. These credentials help maintain regulatory alignment and support long-term maintenance planning for plant safety programs.
The switch accommodates four conductors with three poles, and wiring ranges from #2 to 750 kcmil. Physical dimensions are 19.31 in depth, 25.32 in height, and 77.96 in width, with a shipping weight of 265 lb. Plan for ample mounting space and lifting capability, and verify wiring access points in the enclosure for simplified field wiring and future expansion.