Eaton DH328NWK Heavy-Duty Fusible Switch - NEMA 4X
Part Number: DH328NWK
Quick Summary
The Eaton DH328NWK heavy-duty fusible safety switch provides clean, reliable protection for 3-phase power distribution in industrial panels. In harsh environments, corrosion, downtime, and costly maintenance challenge uptime, but this unit’s corrosion-resistant stainless enclosure helps reduce spares and service intervals. UL Listed and NEMA 4X rated, with a 304 stainless steel enclosure and Class L fuse with neutral, it delivers durable, compliant protection. Designed for 240 V systems with three poles and four wires, it supports scalable protection for large motor and feeder circuits. The combination of rugged construction, UL compliance, and corrosion resistance translates to lower maintenance spend, shorter downtime, and safer plant operation.
Product Information
Extended Description
DH328NWK Eaton: Eaton Enhanced visible blade single-throw safety switch, Corrosion resistant, 1200 A, NEMA 4X, 304 stainless steel, Class L, Fusible with neutral, Three-pole, Four-wire, 240 V, (4)#1/0-(4)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH328NWK
UPC
782116120963
Product Length/Depth
19.99 in
Product Height
73.77 in
Product Width
41.46 in
Product Weight
510 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 L
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
1200A
NEMA rating
NEMA 4X (Stainless)
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Corrosion-resistant enclosure with NEMA 4X rating reduces maintenance and extends service life in outdoor and wash-down environments, delivering tangible uptime gains for critical equipment. The three-pole, four-wire design with fusible Class L protection enables precise overcurrent control, minimizing nuisance trips during startup while safeguarding motors and feeders. Large conductor capacity, supporting four wires and substantial feeder connections (up to four 750 kcmil Al or four #1/0 Al), simplifies installation and reduces future rework when capacity grows. UL Listed certification provides regulatory confidence and faster compliance wiring in industrial facilities, while 304 stainless steel construction resists corrosion in challenging environments, lowering total cost of ownership. Weight and footprint considerations are factored into site planning, facilitating easier installation and maintenance planning. Compatible with Eaton accessories and standard 240 V distribution architectures, it streamlines procurement and commissioning. Warranty coverage adds further business value through risk mitigation and service continuity.
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FAQs
For a 240V three-pole, four-wire setup, mount the DH328NWK where voltage routing and the neutral connections are accessible for maintenance. Ensure sufficient clearance for fuse replacement, verify conductor sizes (four wires) and use proper grounding per NEC/IEC, and follow lockout/tagout procedures during servicing. Consult the manufacturer documentation for exact terminal dimensions and cable access, and plan for 510 lb equipment weight during handling.
With a Class L fuse provision and a neutral path, the DH328NWK provides precise overcurrent protection for high-current motor circuits without unnecessary nuisance trips during startup. The fusible linkage isolates the circuit quickly while allowing controlled current sharing through the neutral, improving motor protection, reducing arc flash risk, and enabling safe maintenance in 240V feeder applications.
Yes. The unit uses a 304 stainless steel enclosure rated NEMA 4X, delivering corrosion resistance in outdoor, wash-down, or chemical-exposure areas. UL Listed and designed for heavy-duty service, it maintains protection integrity even with frequent washdowns and temperature variations. Ensure proper mounting, sealing, and drainage to preserve enclosure integrity over time.
DH328NWK carries UL Listed certification and is built with a corrosion-resistant 304 stainless steel enclosure that complies with NEMA 4X for harsh environments. While CE and SIL ratings are not specified in the current data, the unit’s rugged design, Class L fuse provisions, and stainless enclosure support regulatory compliance, operator safety, and safe maintenance in industrial power distribution.
Investing in the DH328NWK yields measurable uptime benefits and maintenance cost reductions through its durable materials, UL listing, and corrosion resistance. The 510 lb enclosure provides robust protection in demanding environments, reducing replacement frequency and service interruptions. Its 1200A rating supports high-current protection with reduced fault spread, while the long service life of Class L fuses lowers spares expenditure and simplifies preventive maintenance planning.