Eaton DH326NDKW Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH326NDKW
Quick Summary
Eaton heavy duty fusible safety switch provides robust isolation for 3-pole, 4-wire power circuits in industrial facilities, particularly in motor control centers and large machinery installations. Engineers and procurement teams often struggle with finding equipment that combines high current protection, reliable safety features, and straightforward maintenance. This DH326NDKW unit is UL Listed and housed in a NEMA 12, NEMA 3R enclosure, ready for harsh environments. It supports up to 600 A, 240 V, and allows fused connections with neutral, delivering dependable protection while minimizing downtime. The enclosure design and catalog notes simplify field wiring, while the one-year warranty adds value for long-term asset reliability.
Product Information
Extended Description
DH326NDKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Enhanced visible blade, 600 A, NEMA 12/3R, Neutral, Class H, 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
DH326NDKW
UPC
782114140765
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 12, NEMA 3R
Enclosure material
Painted galvanized 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 12/3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
600 A amperage rating and 240 V operation allow safe isolation of large motor feeders, reducing arc flash exposure during maintenance. The three-pole, four-wire configuration with neutral supports complex motor control networks found in conveyors, pump stations, and processing lines. This combination delivers reliable protection with fast fault clearance, helping facilities meet uptime targets and minimize unplanned downtime. The HP rating reaches 75 hp standard and 200 hp for TD applications on 3-phase service, supporting diverse drive sizes. NEMA 12 and NEMA 3R enclosure ratings housed in painted galvanized steel provide rugged protection against dust, moisture, and outdoor exposure. The enclosure design supports effortless installation in harsh environments, with clearly labeled terminals and a compact footprint that facilitates panel integration. This design reduces commissioning time and helps align with facility protection policies. Fusible design with Class H fuse provisions and fusible-with-neutral configuration enable code-compliant, safe disconnection in 4-wire systems. This translates into predictable clearing times and reduced risk during motor starts and fault events, protecting personnel and equipment while simplifying adherence to electrical standards. The neutral-inclusive path also supports modern controls that rely on balanced phase currents. Large conductor compatibility accepts copper or aluminum feeders up to 600 kcmil or 750 kcmil sizes, enabling seamless upgrades without rewiring. This flexibility reduces project costs and extends service life by accommodating future capacity expansions. Field wiring remains straightforward thanks to clearly defined terminal arrangements and support for common service conductor run lengths. Catalog guidance notes that for 2-pole applications you can use the outside poles of a 3-pole switch, which simplifies retrofit projects and inventory planning. With a neutral included, the DH326NDKW supports many modern motor control schemes without sacrificing protection. This approach helps engineers adapt legacy systems to new protection standards without buying entirely new switchgear. Warranty and service support from Eaton back ongoing performance in critical plants. The one-year warranty from installation or eighteen months from shipment provides asset protection during commissioning and early operation, making risk management easier for procurement teams. UL Listed certification and NEMA-rated enclosure ensure the DH326NDKW meets common OEM and contractor specs, smoothing compliance checks during audits and procurement.
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FAQs
The DH326NDKW is a three-pole, four-wire unit designed for 240 V systems and up to 600 A. When wiring, note the neutral path and the catalog note for 2-pole applications: use the outside poles of a 3-pole switch. Ensure panel spacing and mounting comply with NEMA 12/3R enclosure.
It is rated for 600 A, 240 V, three-phase, four-wire with neutral. Maximum HP 75 hp standard, 200 hp TD; enclosure NEMA 12/3R; Class H fuse; fusible with neutral. It accepts large feeders such as #2 copper up to 600 kcmil or 750 kcmil aluminum, enabling robust motor protection.
Yes, thanks to the NEMA 3R enclosure rating and galvanized steel construction, it withstands moisture and incidental outdoor exposure. UL Listed certification confirms safety compliance, and the enclosure is designed for indoor/outdoor service under protective conditions.
This switch is UL Listed, ensuring compliance with recognized safety standards. The NEMA ratings indicate suitable environmental protection, supporting regulatory acceptance in heavy industry and helping to streamline audits, procurement, and installation across diverse facilities.
Eaton provides a warranty of one year from installation or eighteen months from shipment, whichever occurs first, plus access to Eaton support for parts and technical guidance. This coverage reduces risk during commissioning and helps control maintenance costs over the asset’s life.