Eaton DD367NWKW Double Door Single-Throw Fused Safety Switch

Part Number: DD367NWKW
DD367NWKW
Manufacturer
Eaton
Part number
DD367NWKW
Category

Quick Summary

Eaton DD367NWKW double door single-throw fused safety switch protects high-power motors in industrial plants. Downtime during maintenance and exposure risks are persistent challenges in heavy industry; this switch’s rugged enclosure and fused protection help minimize both. UL Listed certification and a NEMA 4X enclosure (304 stainless steel) provide resilience in harsh environments, including washdown and corrosive atmospheres, while the Class L fuse provisions support coordinated protection. With a three-pole, four-wire design and neutral, it integrates cleanly into common 600 V motor circuits, reducing wiring complexity. By combining rugged construction with straightforward installation, it delivers reliable, long-term value for plant uptime, safety compliance, and operating cost reduction.

Product Information

Extended Description

DD367NWKW Eaton: Eaton Double door single-throw fused safety switch, 800 A, NEMA 4X, 304 stainless steel, Class L, Fusible with neutral, Three-pole, Four-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
DD367NWKW
UPC
786679174609
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 with neutral
Number Of Poles
Three-pole
Number of wires
4
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
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Feature: 800 A amperage rating with Class L fuse provision. Business Impact: Enables protection of high‑power motor loads with coordinated protection, reducing nuisance fuse blows and improving motor uptime. Application: Suitable for 3P4W 600 V motor feeders in heavy industry. The DD367NWKW supports motor control centers and large process lines with dependable protection. Feature: NEMA 4X stainless steel enclosure. Business Impact: Delivers corrosion resistance and washdown compatibility, lowering maintenance and replacement costs in harsh environments. Application: Outdoor installations, chemical processing, and food & beverage plants where cleanliness and containment matter. Feature: Fusible with neutral configuration. Business Impact: Streamlines wiring and ensures proper fault isolation, enabling safer startup sequences and easier retrofits. Application: New installs or upgrades in existing 600 V circuits requiring neutral for control circuits. Feature: Window-enabled, w/ window option. Business Impact: Facilitates quick visual status checks and safer testing without opening the enclosure. Application: Routine inspections and preventive maintenance in 24/7 operations. Feature: Three-pole, four-wire design. Business Impact: Simplifies phase wiring and improves coordination on three-phase systems, enhancing reliability. Application: Standard motor feeds and high‑power distribution networks. Feature: UL Listed and rugged performance. Business Impact: Supports regulatory compliance and reduces qualification time on job sites. Application: Industrial plants requiring certified protection and dependable performance.

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FAQs

What mounting, wiring, and clearance requirements should I plan for when installing the DD367NWKW in a 600 V, three-phase environment? Start with securing the enclosure in a clean, dry location with appropriate IP/RFI considerations; ensure proper clearances per enclosure dimensions (86.73 in length, 22.16 in height, 26.57 in width) and plan for three-pole, four-wire connections with neutral. Verify fusible with neutral operation and confirm UL Listed compliance is maintained during installation. Use the included window feature for quick fault diagnosis during commissioning and routine checks.
Yes. The DD367NWKW is designed as fusible with neutral and supports three-pole, four-wire configurations, enabling straightforward integration with four-wire 600 V motor circuits and control circuits requiring a neutral path. This compatibility simplifies wiring diagrams, reduces retrofit complexity, and helps maintain proper protection coordination across feeders and motors.
Ideal for high‑power motor protection in harsh industrial environments, the DD367NWKW is well-suited for motor control centers, outdoor process lines, and washdown areas. Its 800 A rating and 600 V capability support large motors and heavy loads, while the NEMA 4X enclosure protects against environmental ingress, enabling reliable operation in challenging facilities such as manufacturing plants and processing facilities.
The DD367NWKW is UL Listed, providing a recognized safety certification for electrical equipment. It features a NEMA 4X enclosure (304 stainless steel), offering watertight and corrosion-resistant protection suitable for demanding environments. The fuse configuration is Class L, and the overall design supports reliable, compliant motor protection in industrial installations.
The combination of an 800 A rating, 600 V capability, and a durable 304 stainless steel NEMA 4X enclosure minimizes unplanned downtime and corrosion-related maintenance. With a window feature for quick status checks and a robust fusible-with-neutral design, the unit reduces maintenance labor, extends service life, and supports long-term cost savings in facilities with frequent motor starts and demanding service conditions.