Eaton DD367FWKW Fused Safety Switch - NEMA 4X 800A
Part Number: DD367FWKW
Quick Summary
Eaton DD367FWKW fused safety switch provides robust overcurrent protection for 3-phase industrial systems. When downtime and unplanned outages threaten production, engineers need protection that's reliable, easy to install, and straightforward to maintain. It carries UL Listed certification and a NEMA 4X, 304 stainless steel enclosure, offering corrosion resistance and dependable performance in demanding environments. With Class L fusing and a three-pole, three-wire configuration rated at 600 V and 500 hp, the device aligns with high‑demand motor circuits while enabling fast, compliant installations. This translates to reduced maintenance costs, safer operation, and improved uptime for electricians and procurement teams seeking durable protection solutions.
Product Information
Extended Description
DD367FWKW Eaton: Eaton Double door single-throw fused safety switch, 800 A, NEMA 4X, 304 stainless steel, Class L, Fusible without neutral, Three-pole, Three-wire, 600 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
DD367FWKW
UPC
786679174524
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
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
800A
Fuse class provision
Class L
HP rating - max
500, 500 hp (3PH @480/600 V)
NEMA rating
NEMA 4X
Voltage rating
600 V
Product Category
Watertight
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 - DD367FWKW
Feature: 304 stainless steel enclosure with NEMA 4X rating provides superior corrosion resistance and washdown compatibility. Business Impact: Prolonged equipment life and reduced maintenance cycles in harsh environments. Application: Ideal for outdoor installations, chemical plants, and food/beverage facilities where enclosure integrity matters. Feature: Fusible without neutral with Class L fuse provision ensures selective coordination and fault energy control. Business Impact: Lower energy damage during faults, easier fault isolation, and improved motor protection. Application: Large motors and conveyors operating up to 600 V with high horsepower requirements. Feature: 800 A amperage rating with three-pole, three-wire configuration supports heavy electrical loads. Business Impact: Enables reliable protection for high‑hp motors (up to 500 hp @ 480/600 V), reducing nuisance trips. Application: Industrial plants with large pumps, fans, and presses. Feature: Window-enabled, double-door design enhances visibility during inspections without compromising safety. Business Impact: Faster maintenance checks and safer lockout/tagout procedures. Application: OEM panels and retrofit projects where quick status verification matters. Feature: Conductors supporting up to 750 kcmil and four #1/0 conductors demonstrates flexible power distribution. Business Impact: Simplifies wiring in demanding installations, reduces labor time, and supports compliance with wiring standards. Application: Heavy-duty electrical protection in process industries requiring robust wiring options. Feature: UL Listed certification and documented warranty offer regulatory confidence and predictable service. Business Impact: Simplified procurement, reduced risk, and better total cost of ownership. Application: Quality assurance teams and procurement want traceable safety compliance. Feature: 304 stainless steel, heavy-duty construction, and a 86.73 in length provide a rugged footprint with a clear installation envelope. Business Impact: Easier integration into existing guardrails and electrical rooms while maintaining space planning accuracy. Application: Large-scale panels and switchgear assemblies needing a durable protection solution.
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FAQs
The DD367FWKW is a three-pole, fusible switch rated at 800 A and 600 V, with a NEMA 4X stainless steel enclosure. Plan for a suitable footprint—86.73 in length, 22.16 in height, and 26.57 in width—plus appropriate anchoring. The unit supports up to 750 kcmil wiring and four #1/0 conductors, facilitating field wiring while maintaining UL compliance and safe clearances for servicing.
Key specs include 800 A amperage, 600 V rating, three-pole/fusible without neutral, and Class L fuse provision. The device is rated for up to 500 hp at 480/600 V and uses a three-wire configuration. It is UL Listed and designed for high‑horsepower motor circuits, delivering reliable fault protection while supporting safe, code‑compliant operation.
Yes. The enclosure is NEMA 4X, constructed from 304 stainless steel, which provides excellent corrosion resistance and washdown tolerance. This makes it well-suited for harsh environments such as manufacturing floors, chemical processing, and other applications where exposure to moisture or cleaning agents is common, while maintaining safety and performance.
The DD367FWKW carries Eaton’s standard warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. It is UL Listed, supporting regulatory compliance. Eaton’s support ecosystem includes product specification sheets and application notes to assist with sizing, installation, and integration into existing control architectures.
Integration is straightforward thanks to the 600 V rating and three-pole layout that aligns with standard motor control centers and panel boards. The Class L fuse, combined with durable 304 stainless steel construction and UL listing, reduces downtime and maintenance costs, delivering improved uptime and a favorable total cost of ownership for facilities with large motor loads.