Eaton DH366NWKW Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH366NWKW
Quick Summary
Eaton DH366NWKW heavy duty fusible safety switch controls large motor circuits in industrial plants. A common project challenge is achieving quick, code-compliant installations that resist washdown and harsh environments. UL Listed certification and a NEMA 4X stainless enclosure guarantee long-term reliability in demanding settings. With three poles, four wires, and neutral included, it supports scalable, high-current protection for 240 to 600 VAC systems. This translates to reduced downtime, faster maintenance, and fewer field wiring errors for maintenance crews and OEM integrators. In addition, its 600 A amperage rating and high hp capability support a wide range of heavy-duty applications beyond simple switch control.
Product Information
Extended Description
DH366NWKW Eaton: Eaton Enhanced visible blade single-throw safety switch, enhanced visible blades, 600 A, NEMA 4X, Neutral, Three-pole, Four-wire, 600 V, Max Hp: 200, 400, 500 hp (3PH @240,480,600 V), (1)#2-(1)600 kcmil; and (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH366NWKW
UPC
782114380192
Product Length/Depth
14.25 in
Product Height
63 in
Product Width
24 in
Product Weight
203 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
600A
HP rating - max
200, 400, 500 hp (3PH @240,480,600 V)
NEMA rating
NEMA 4X (Stainless)
Voltage rating
600 V
Product Category
Heavy Duty, Fusible with neutral
Feature: 600 A amperage rating with three-pole, four-wire configuration and neutral. Business Impact: Enables reliable heavy-duty motor protection for demanding loads, reducing nuisance trips and simplifying coordination with upstream protective devices. Application: Ideal for large motors in manufacturing lines, pumps, and conveyors. Feature: NEMA 4X stainless steel enclosure (304 stainless) for washdown and corrosion resistance. Business Impact: Reduces maintenance costs and downtime in damp or outdoor environments. Application: Food and beverage, water treatment, outdoor equipment enclosures. Feature: Fuse class provision Class H and fusible with neutral. Business Impact: Ensures selectivity and fast fault clearing, compatible with standard fuses and control circuitry. Application: Industrial power distribution and motor control centers in rugged facilities. Feature: UL Listed certification and compliant construction. Business Impact: Meets electrical code requirements and customer QA standards, lowering project risk. Application: Projects requiring UL listing for equipment safety. Feature: 600 V rating and HP capability up to 500 hp (3PH @ 240/480/600 V). Business Impact: Supports a wide spectrum of motor loads and scalable plant modernization. Application: Heavy-duty drive protection in packaging, mining, and process industries. Feature: Physical robustness—63 in height, 24 in width, 14.25 in depth, 203 lb weight; 304 SS enclosure. Business Impact: Provides enduring mechanical integrity and straightforward installation in existing footprints. Application: OEM integration and retrofit projects where footprint and corrosion resistance matter.
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FAQs
The DH366NWKW is configured for three-pole operation with four conductors plus a neutral. Ensure correct alignment with the outside poles for a 2-pole application per the catalog notes, mount on a sturdy surface compatible with a 63 in high, 24 in wide footprint, and connect the neutral and grounding as per Eaton installation instructions. Confirm enclosure integrity for washdown environments (NEMA 4X).
Key ratings include a 600 A amperage rating, 600 V maximum voltage, and HP ratings up to 200, 400, or 500 hp for three-phase systems at 240/480/600 V. It uses Class H fuses and provides a fusible with neutral configuration, which supports selective coordination and safe fault clearing in demanding motor circuits.
Yes. The enclosure is NEMA 4X rated and constructed from 304 stainless steel, delivering excellent corrosion resistance and washdown durability. This makes it well-suited for outdoor installations, food and beverage facilities, water treatment, and other environments where moisture and contaminants are present.
The DH366NWKW is UL Listed, indicating compliance with recognized safety standards for electrical equipment. This certification supports code compliance, reduces risk during audits, and aligns with procurement requirements for industrial projects that demand validated safety equipment in motor protection and power distribution.
Eaton provides a one-year limited warranty from installation or eighteen months from shipment, whichever comes first. For maintenance, rely on the rugged 304 stainless enclosure and fusible design to minimize corrosion-related downtime. The product’s UL listing and durable construction help reduce service frequency and simplify spare parts planning.