Eaton DH322NWKW Heavy duty fusible safety switch - NEMA 4X
Part Number: DH322NWKW
Quick Summary
Eaton heavy duty fusible safety switch protects three-phase motor circuits in rugged manufacturing environments. It addresses downtime caused by inadequate protection and corrosion-prone enclosures, delivering reliable, field-proven performance. Key certifications include UL Listed and NEMA 4X stainless steel construction, with 304 stainless steel enclosure material for washdown environments. The device integrates seamlessly with 240 V three-phase systems and supports four-wire configurations, including a neutral conductor. By combining durable protection with straightforward installation and maintenance, this solution enhances uptime, safety, and compliance while aligning with broader industrial protection strategies and procurement requirements.
Product Information
Extended Description
DH322NWKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Corrosion resistant, enhanced visible blade, 60 A, NEMA 4X, 304 stainless steel, Neutral, Three-pole, Four-wire, 240 V, Max Hp: 15, 30/ 20 hp (3PH @Std, TD/250 Vdc), #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH322NWKW
UPC
782114022603
Product Length/Depth
23 in
Product Height
10.5 in
Product Width
12.5 in
Product Weight
22 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
Wire size
#14-2 AWG Cu/Al
Amperage Rating
60A
HP rating - max
15, 30/ 20 hp (3PH @Std, TD/250 Vdc)
NEMA rating
NEMA 4X (Stainless)
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature: NEMA 4X corrosion-resistant enclosure made from 304 stainless steel → Business Impact: Superior protection in washdown and harsh environments reduces corroded components and costly downtime; Application: outdoor drives and process lines where maintenance windows are limited. Feature: Three-pole design with neutral and four wires → Business Impact: Full three-phase control with neutral support enables precise motor protection and balanced fault handling; Application: high-load conveyors and pumps in manufacturing facilities. Feature: Fuse class provision Class H and fusible with neutral → Business Impact: Reliable protection against overcurrent with standardized replacement parts lowers maintenance time and inventory costs; Application: continuous-process equipment requiring predictable fuse characteristics. Feature: Wire compatibility #14-2 Cu/Al → Business Impact: Flexible, cost-efficient wiring options simplify panel wiring and spares planning; Application: retrofits and new installations across varied facility footprints. Feature: Max HP rating of 15, 30/20 hp (3PH Std, TD/250 Vdc) → Business Impact: Clear performance envelope guides motor sizing and reduces overspecification; Application: motors used in pumping and grinding tasks. Feature: NEMA 4X enclosure and UL Listed certification → Business Impact: Compliance with industry standards and robust ingress protection minimizes risk of environmental damage and regulatory issues; Application: outdoor substations and washdown areas. Industry insight: For 2-pole applications, using the outside poles of a 3-pole switch streamlines design and stock management, reducing part variety without compromising protection. This aligns with common best practices in industrial automation wiring and safety practices.
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FAQs
The DH322NWKW is designed for three-phase, four-wire installations and supports 60A at 240V. It includes a neutral and is suitable for standard 3PH systems. For 2-pole applications, use the outside poles of a 3-pole switch as noted in the catalog. The device accepts #14-2 AWG Cu/Al conductors, simplifying wiring with common motor feeders and control circuits.
This model provides a 60A amperage rating and a 240V voltage rating, with a maximum horsepower rating of 15 HP and 30/20 HP for 3PH depending on standard or TD/250Vdc configurations. It is UL Listed and designed for NEMA 4X environments, making it suitable for demanding industrial applications requiring solid protection.
Yes. The enclosure is rated NEMA 4X and constructed from 304 stainless steel, delivering corrosion resistance in washdown and outdoor environments. This ensures protection against moisture, dust, and scrub-down cleaning, which helps maintain reliability in food & beverage, chemical processing, and manufacturing settings.
The switch supports four wires with a neutral and is wired for three-phase operation. Use #14-2 AWG Cu/Al conductors and ensure proper termination inside the enclosure. When wiring for 2-pole applications, utilize the outside poles of a 3-pole unit as recommended in the catalog notes to simplify design and procurement.
The DH322NWKW carries UL Listing and a 2-pole compatible design with a corrosion-resistant stainless enclosure. Warranty terms follow Eaton policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. These protections, along with the UL certification, support regulatory compliance and long-term maintenance budgeting.