Eaton DH365NWKW Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH365NWKW
Quick Summary
Eaton DH365NWKW heavy duty fusible safety switch protects industrial power systems in demanding applications. Maintenance teams often struggle with devices that corrode, require frequent servicing, or obscure fault status in harsh environments. UL Listed safety certification, a corrosion-resistant 304 stainless enclosure, and a NEMA 4X rating provide reliable protection; its Class H fuse and 600 V capacity support critical motor loads. Designed for outdoor or washdown areas, this switch enables safer, faster maintenance and predictable protection for 400 A systems while accommodating up to 350 hp in three-phase service. Its three-pole, four-wire configuration and compatibility with 2-pole setups through outside poles support flexible, scalable installations across plant layouts.
Product Information
Extended Description
DH365NWKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Corrosion resistant, enhanced visible blades, 400 A, NEMA 4X, Three-pole, Four-wire, 600 V, Max Hp: 250, 350 hp (3PH @480/600 V), (2)#1/0-(2)300 kcmil; or (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH365NWKW
UPC
782114140925
Product Length/Depth
12.63 in
Product Height
57.63 in
Product Width
23 in
Product Weight
135 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
Catalog Notes
For 2-pole applications; use outside poles of 3-pole switch
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Fuse class provision
Class H
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
400A
HP rating - max
250, 350 hp (3PH @480/600 V)
NEMA rating
NEMA 4X (Stainless)
Voltage rating
600 V
Product Category
Heavy Duty, Fusible with neutral
Feature: 400 A amperage rating and 600 V maximum voltage. Business Impact: Provides robust protection for high‑duty motors and feeders, reducing nuisance trips and minimizing equipment damage. Application: Suitable for MCCs, conveyors, and pumps in manufacturing and processing plants. Feature: NEMA 4X stainless enclosure (304 stainless). Business Impact: Ensures corrosion resistance and durable performance in outdoor, washdown, or humid environments, lowering maintenance costs. Application: Food & beverage, water treatment, and outdoor equipment pads. Feature: Three-pole, four-wire fusible with neutral; Class H fuse. Business Impact: Facilitates safe isolation, precise fault clearing, and straightforward fuse replacement, improving uptime. Application: Main power distribution and motor control circuits in heavy industry. Feature: Enhanced visible blades. Business Impact: Allows quick status verification during commissioning or routine checks, reducing startup time and safety risk. Application: Plant startups and periodic inspections. Feature: Catalog note for 2-pole configurations. Business Impact: Prevents mis-wiring and ensures correct configuration when using only two poles. Application: Retrofit projects where 2-pole operation is desired. Feature: UL Listing and warranty. Business Impact: Compliance with safety standards and post-purchase support reduces lifecycle risk and procurement anxiety. Application: Sourcing for maintenance contracts and risk-managed projects.
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FAQs
Yes. For 2-pole applications, install using the outside poles of a 3-pole switch as noted in the catalog, and ensure the neutral configuration aligns with the system wiring. This approach preserves fault isolation while simplifying wiring in smaller control schemes.
The unit provides a 400 A amperage rating, 600 V voltage rating, and a maximum HP rating of 250–350 hp (3PH @480/600 V). It is UL Listed and features a three-pole, four-wire configuration with a fusible with neutral design and Class H fuse protection.
Yes. The DH365NWKW employs a 304 stainless steel enclosure with a NEMA 4X rating, delivering excellent corrosion resistance for outdoor, washdown, and harsh indoor environments while maintaining electrical integrity.
UL Listed certification confirms safety and performance compliance for electrical equipment. The combination with a NEMA 4X enclosure further ensures suitability for rugged environments, helping you meet regulatory and safety requirements in industrial settings.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first, along with standard manufacturer support. This reduces lifecycle risk and supports maintenance planning for critical power protection assets.