Eaton DD326FDKW Safety Switch - UL Listed, 600A Fusible
Part Number: DD326FDKW
Quick Summary
Eaton DD326FDKW fused safety switch provides reliable isolation for medium‑voltage motor circuits in industrial facilities. When downtime and safety compliance drive procurement, you need a unit that’s easy to install, labeled, and serviceable. This model is UL Listed and housed in a rugged NEMA 12/3R enclosure, delivering dust‑tight protection and weather resistance for demanding environments. With a 600 A rating at 240 V and support for up to 400–500 hp (3PH @480/600 V), it helps maximize motor uptime while reducing panel footprint. This combination of protection, performance, and Eaton warranty supports safe commissioning and long‑term procurement efficiency for industrial power equipment.
Product Information
Extended Description
DD326FDKW Eaton: Eaton Double door single-throw fused safety switch, 600 A, NEMA 12/3R, 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
DD326FDKW
UPC
786679184264
Product Length/Depth
72.75 in
Product Height
20 in
Product Width
23.5 in
Product Weight
315 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 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
Dust tight
Special features
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 - DD326FDKW
Feature → Business Impact → Application: 600 A amperage rating with fusible without neutral configuration provides safe, reliable isolation for high‑current motors, reducing fault propagation and safeguarding personnel. This enables faster maintenance windows and lowers total downtime in manufacturing lines, especially where large motors are paired with 240 V power. Application: large‑load motor control, machine shops, and processing plants needing robust switchgear for three‑phase systems. Feature → Business Impact → Application: Three‑pole, three‑wire design simplifies wiring in new installations and retrofit projects, improving field wiring accuracy and reducing install time for panel builders. Application: panel assemblies, motor control centers, and primary protection stages in industrial facilities. Feature → Business Impact → Application: NEMA 12, NEMA 3R enclosure with painted galvanized steel withstands dust and weather exposure, minimizing maintenance cycles and extending service life in harsh environments. Application: dusty factories, outdoor machinery, and exposed equipment areas. Feature → Business Impact → Application: UL Listed certification together with Class H fuse provision delivers regulatory compliance and enhanced electrical safety, lowering risk in regulated industries. Application: regulated manufacturing environments and plant safety programs. Feature → Business Impact → Application: HP rating up to 400–500 hp at 480/600 V enables support for sizable industrial motors without compromising protection, helping engineers optimize equipment sizing and reduce inventory of separate protective devices. Application: heavy‑duty motor control for conveying, pumping, and processing lines. Feature → Business Impact → Application: Windowed fuse status option (Special features w/ window) allows quick visual verification during routine checks, reducing inspection time and improving uptime. Application: routine maintenance and safety audits in compact or crowded switchgear rooms. Long‑tail keywords integrated: 600A fused safety switch, 3‑pole safety switch, NEMA 12 enclosure, NEMA 3R, fusible without neutral, Class H fuse, UL Listed, 240 V, high hp protection, windowed fuse, dust tight enclosure.
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FAQs
The DD326FDKW is a three‑pole, fusible without neutral safety switch rated for 600 A at 240 V. It fits standard industrial panel setups and motor control centers that require NEMA 12 or NEMA 3R enclosure protection. Its dimensions and 72.75 inch depth, 23.5 inch width, and 20 inch height support straightforward wall or rack mounting, while maintaining safe clearance for service access.
Key specs include 600 A amperage rating, 240 V, and a max HP rating of 400–500 hp for 3PH at 480/600 V. The unit uses fusible protection with a Class H fuse, and it is designed for three‑pole, three‑wire circuits. For installations with large motors, verify conductor sizes up to #2/600 kcmil and align protection with the motor starter and site safety standards.
Yes. The enclosure supports NEMA 12 and NEMA 3R ratings, providing dust‑tight and weather‑resistant protection. This makes it suitable for dusty factory floors and occasionally exposed outdoor areas when properly installed with appropriate clearances. The galvanized steel enclosure further enhances durability in harsh environments.
The DD326FDKW is UL Listed, ensuring compliance with recognized electrical safety standards. Maintenance benefits include a window option for quick fuse status checks and the robust Class H fuse provision for predictable fault clearing. Regular inspection should verify fuse integrity, enclosure seals, and wiring terminations to maintain regulatory compliance and uptime.
By delivering reliable motor isolation for large loads, the unit reduces unplanned downtime and speeds maintenance cycles, contributing to lower operational costs. Its rugged enclosure and UL Listed safety credentials minimize risk in regulated environments. When sized for the application, it also reduces the need for multiple protective devices, simplifying spare parts inventories and improving procurement efficiency.