Eaton DD365FDKW Fused Safety Switch - UL Listed
Part Number: DD365FDKW
Quick Summary
The Eaton DD365FDKW fused safety switch provides reliable isolation for 3-phase, 600 V motor circuits in industrial control panels. Maintenance crews often face downtime and unsafe fuse changes when breakers must be de-energized and panels opened. UL Listed protection, plus NEMA 12/NEMA 3R enclosures and Class H fusing deliver reliable safety and environmental resistance. This combination supports compliance and reduces panel downtime while enabling straightforward integration with 600 V, three-wire systems.
Product Information
Extended Description
DD365FDKW Eaton: Eaton Double door single-throw fused safety switch, 400 A, NEMA 12/3R, Class H, Fusible without neutral, Three-pole, Three-wire, 600 V, Max Hp: 250, 350 hp (3PH @480/600 V), (2)#1/0(1)#1/0-(2)300 kcmil-#1/0, or (1)175 kcmil-#1/0
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD365FDKW
UPC
786679184547
Product Length/Depth
72.25 in
Product Height
16.25 in
Product Width
27.25 in
Product Weight
234 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
400A
Fuse class provision
Class H
HP rating - max
250, 350 hp (3PH @480/600 V)
Voltage rating
600 V
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 - DD365FDKW
The DD365FDKW delivers 400 A with a 600 V rating and Class H fuses, offering safe isolation for three-phase motor circuits and process lines in industrial controls. In practical terms, that means fewer fuse-related outages and quicker restoration after a fault, improving overall equipment reliability and reducing unplanned downtime. Its NEMA 12 and NEMA 3R enclosures, crafted from painted galvanized steel, provide dust-tight protection and weather resistance for indoor installations and outdoor-sheltered areas. This enclosure pairing translates to lower maintenance costs and longer service intervals in harsh factory environments. Fusible without neutral configuration supports flexible wiring options for 400 A feeders and large conductors, including multiple parallel paths up to 300 kcmil-#1/0 or equivalent. This simplifies retrofits and upgrades by accommodating existing feeders without extensive rewiring. The unit’s dimensions and weight—72.25 in L, 27.25 in W, 16.25 in H; 234 lb—fit typical installation footprints while offering a robust, lockable, double-door design with a window to visually verify fuse status. These features reduce installation time and minimize maintenance visits. A one-year warranty (or eighteen months from shipment) and UL listing underline Eaton’s commitment to reliability, while the window feature helps technicians quickly confirm status without opening the enclosure.
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FAQs
The DD365FDKW is a three-pole, three-wire fusible switch designed for large feeders. It accommodates up to 300 kcmil-#1/0 conductor configurations per phase and occupies a substantial footprint typical of industrial safety switches. Plan for a 72.25 in length, with a 27.25 in width and 16.25 in height footprint, and ensure mounting aligns with standard panel openings and door clearances for a double-door, window-equipped enclosure.
This model provides 400 A continuous current at 600 V and uses Class H fuses in a fusible without neutral configuration. It is a three-pole device with three conductors, suitable for three-phase motor protection and control circuits. The HP rating reaches up to 350 hp at 480/600 V, offering robust protection for medium- to high-power motors.
Yes. The DD365FDKW uses UL Listed protection and is housed in a NEMA 12, NEMA 3R enclosure, ensuring dust-tight indoor operation and weather-protected outdoor or sheltered spaces. This makes it well-suited for industrial environments such as manufacturing floors, packaging lines, and process control panels where dust and grime are common.
The device is UL Listed and features a NEMA 12, NEMA 3R enclosure with painted galvanized steel construction. These attributes deliver compliance with typical industrial protection standards for indoor and semi-exposed environments, along with rugged mechanical protection and visibility for fuse status via the included window feature.
Eaton provides a warranty of one year from installation or eighteen months from shipment, whichever occurs first. This, combined with UL certification and a durable metal enclosure, supports a favorable total cost of ownership by reducing maintenance interventions and increasing system reliability in demanding industrial settings.