Eaton DH326NWK Fusible Switch - NEMA 4X Stainless
Part Number: DH326NWK
Quick Summary
Eaton DH326NWK fusible safety switch is a heavy-duty isolation device designed for reliable power control in industrial plants. It helps prevent unexpected outages and supports safe, controlled shutdowns in demanding environments. The enclosure is UL Listed and built to endure harsh conditions with a NEMA 4X rating and 304 stainless steel construction, providing corrosion resistance. This solution also aligns with rigorous protection standards for three-pole, four-wire circuits, while offering a clear path to compliance and long-term operating cost reductions. For integrators, it delivers robust protection, strong compatibility with high-current motor loads, and streamlined maintenance workflows, enhancing overall equipment reliability and uptime.
Product Information
Extended Description
DH326NWK Eaton: Eaton Enhanced visible blade single-throw safety switch, 600 A, NEMA 4X, 304 stainless steel, Class H, Neutral, Three-pole, Four-wire, 240 V, Max Hp: 75, 200 hp (3PH @Std, TD)), (1)#2-(1)600 kcmil and (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH326NWK
UPC
782114375211
Product Length/Depth
12.75 in
Product Height
63 in
Product Width
23 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
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
75, 200 hp (3PH @Std, TD))
NEMA rating
NEMA 4X (Stainless)
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature → Business Impact → Application: The DH326NWK uses a 600 A amperage rating with a three-pole, four-wire configuration and a fusible with neutral design, delivering precise overcurrent protection that minimizes motor damage and reduces unplanned downtime. This translates to measurable uptime gains in packaging, material handling, and process lines where motor loads are critical. Application-wise, operators benefit from clear isolation points and predictable fault responses, enabling safer lockout/tagout procedures and faster recovery after faults. Feature → Business Impact → Application: NEMA 4X stainless steel enclosure and 304-grade construction offer outstanding corrosion resistance in washdown environments, extending service life in food, beverage, and chemical processing facilities. This reduces maintenance costs and parts replacements while improving long-term total cost of ownership. Feature → Business Impact → Application: Class H fuse provision with neutral simplifies wiring coordination and selectivity, enabling reliable protection coordination with upstream devices and minimizing nuisance trips in mixed-load motor systems. Application spans conveyors, pumps, and HVAC drives in steel mills, refineries, and water treatment plants. Feature → Business Impact → Application: 240 V operation and available HP ratings (up to 200 HP in three-phase service) provide compatibility with a broad motor portfolio, facilitating straightforward panel integration and spare parts planning. This supports scalable expansions in automation projects and reduces engineering time during upgrades. Feature → Business Impact → Application: UL Listing and industry-standard specifications help meet compliance requirements and customer procurement policies, smoothing project approvals and supplier qualification processes. Application includes OEM panels and retrofit projects where documented certification is mandatory. Feature → Business Impact → Application: The compact yet sturdy form factor, with a 12.75 in depth, 23 in width, and 63 in height footprint, enables easier mounting in confined spaces and consistent alignment with adjacent devices, reducing installation time and field wiring errors. Application includes retrofit installations and new builds across manufacturing cells where space is a premium.
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FAQs
The DH326NWK is designed as a three-pole, four-wire fusible safety switch with neutral, suitable for standard panel mounting and straightforward wiring within industrial control enclosures. It supports 240 V service and integrates with upstream protection devices for coordinated overcurrent protection. Plan for proper clearances, lockout/tagout accessibility, and compatibility with downstream disconnects to ensure safe, compliant operation across motor control centers.
Key specs include a 600 A amperage rating and maximum motor HP of up to 200 HP for three-phase service at standard conditions, with 240 V operating voltage. These figures determine the protection boundary for motor feeders, reducing insulation stress and arc-flash risk. The Class H fuse provision and neutral enable selective coordination and safe disconnection during fault conditions, improving overall system reliability.
Yes. The DH326NWK features a NEMA 4X enclosure with 304 stainless steel construction, providing excellent resistance to washdown, moisture, and chemical exposure. This makes it well-suited for food and beverage processing, pharmaceutical, and chemical industries where cleanliness and corrosion resistance are critical factors for maintaining uptime and safety.
The unit is UL Listed, affirming compliance with recognized safety standards for electrical equipment. Its NEMA 4X enclosure rating and stainless steel construction further support robust protection against environmental factors. For regulated industries and projects, these certifications simplify procurement, support regulatory audits, and help meet safety, quality, and installation requirements across panel builders and end users.
Maintenance focuses on verifying fuse integrity, confirming neutral connections, and inspecting enclosure sealing after washdown cycles to preserve corrosion resistance. The ROI comes from reduced downtime due to reliable isolation, longer service life of stainless steel enclosures, and lower maintenance labor costs thanks to straightforward wiring and predictable fault behavior of the Class H fusible switch in demanding applications.