Eaton DH326NWKW Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH326NWKW
Quick Summary
DH326NWKW is Eaton’s heavy duty fusible safety switch for three-phase, 240 V motor protection. Field downtime, corrosion, and weak enclosure protection are common pain points in harsh industrial environments. UL Listed certification and a stainless steel, NEMA 4X enclosure deliver rugged protection for outdoor or washdown areas. With a 600 A rating supporting up to 200 HP for three-phase service and a fusible-with-neutral design, this switch reduces wiring complexity while enhancing safety and reliability. Its enhanced visible blade aids quick status checks, and compatibility notes ensure proper installation across common motor feeders. These features align with maintenance best practices and procurement standards, delivering long-term total cost of ownership benefits.
Product Information
Extended Description
DH326NWKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Corrosion resistant, enhanced visible blade, 600 A, N4X, 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
DH326NWKW
UPC
782114380208
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
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
Enclosure and corrosion resistance deliver durable protection in washdown and outdoor environments, reducing maintenance costs and downtime while extending service life in conveyors and pumps. A 600 A rating supports large motors, enabling efficient system design and minimizing the need for upstream protection upgrades in heavy equipment applications. The Class H fuse provision and neutral capability provide selective protection and safer, more reliable motor feeders, lowering the risk of nuisance tripping and electrical faults in complex networks. Three-pole, four-wire configuration simplifies wiring and improves fault isolation, which translates to faster commissioning and safer maintenance procedures in panel assemblies. The enhanced visible blade accelerates status checks during routine inspections, improving overall OEE and reducing commissioning time for new equipment. Compatibility notes ensure correct use in two-pole scenarios by guiding pole selection on three-pole switches, reducing installation errors.
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FAQs
DH326NWKW is designed for three-phase, 240 V systems and supports 600 A with a neutral, four-wire configuration. It is intended for use in environments requiring a NEMA 4X stainless enclosure and UL Listed certification. For two-pole applications, install using the outer poles of a three-pole switch, per catalog notes, to maintain proper protection and voltage rating while simplifying wiring.
The Class H fuse provision provides high-rupture capacity protection with fast-acting response for motor feeders, reducing the risk of duct or winding damage. The neutral conductor integration allows safer and more reliable protection of multi-wire circuits. This combination supports precise coordination with upstream protection, improving selectivity and minimizing unnecessary outages in large motors and drives.
Yes. The enclosure is NEMA 4X and constructed from stainless steel, delivering superior corrosion resistance for outdoor locations and washdown conditions. UL Listed certification further confirms compliance with safety standards, making it appropriate for demanding industrial areas such as conveyors, pumps, and machining cells exposed to moisture or chemicals.
The DH326NWKW carries UL Listed certification and a stainless steel NEMA 4X enclosure rating, indicating suitability for challenging indoor and outdoor environments. Its 600 A amperage rating, 240 V voltage rating, and three-pole, four-wire configuration align with common industrial protection schemes and motor feeder designs, ensuring reliable performance and compliance with typical electrical protective device requirements.
The corrosion-resistant enclosure and robust fusible-with-neutral design contribute to longer service life and fewer unplanned outages, reducing maintenance frequency and replacement costs. The enhanced visible blade supports quicker inspections, lowering labor time during routine checks. Overall, the DH326NWKW helps improve uptime, lower total cost of ownership, and support safer, more efficient motor protection in high-demand applications.