Eaton DH365NWKX Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH365NWKX
Quick Summary
DH365NWKX is an Eaton heavy duty fusible safety switch designed to isolate three-phase power in harsh industrial environments. Far too often, corrosive surroundings and bulky enclosures contribute to maintenance headaches and unplanned downtime. This model delivers a corrosion-resistant EnviroLine stainless enclosure rated NEMA 4X and UL Listed, with a 600 V max rating for reliable performance in outdoor or washdown areas. It supports 400 A circuits with neutral, three poles and four wires, and ships with Class H fuses for fast, safe isolation. By combining robust construction with straightforward wiring and clear documentation, it reduces installation time and supports OSHA and NEC compliance in harsh plants.
Product Information
Extended Description
DH365NWKX Eaton: Eaton Heavy duty single-throw fused safety switch, Corrosion resistant, 400 A, NEMA 4X, EnviroLine stainless, Neutral, Three-pole, Four-wire, 600 V, Max Hp: 250, 350 hp (3PH @480/600 V), (2)#1/0-(2)300 kcmil; or (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH365NWKX
UPC
782114224274
Product Length/Depth
11.2 in
Product Height
57.47 in
Product Width
22.66 in
Product Weight
135 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.
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Enclosure
NEMA 4X
Enclosure material
EnviroLine stainless
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
400A
HP rating - max
250, 350 hp (3PH @480/600 V)
NEMA rating
NEMA 4X (Stainless)
Voltage rating
600 V
Product Category
Heavy Duty, Harsh Environment - EnviroLine
Feature → Business Impact → Application: The DH365NWKX uses a three-pole fusible switch with neutral, delivering safe isolation for three-phase motors and feeders while enabling clean start-up and clear service disconnects on large loads. Application: Suitable for industrial automation lines and processing equipment operating up to 600 V, this configuration supports motor control centers and hard-start equipment with predictable fuse protection. Feature → Business Impact → Application: The EnviroLine stainless enclosure provides outstanding corrosion resistance and washdown suitability, reducing maintenance and extending service life in harsh environments like food processing and chemical plants. Feature → Business Impact → Application: Class H fuse design paired with a 400 A rating enables fast fault clearance and enhanced conductor protection, supporting compact panel design and reduced downtime in high-load applications. Feature → Business Impact → Application: Large conductor capacity (up to (2)300 kcmil Cu/Al; or (1)750 kcmil Cu/Al) offers flexible wiring options, simplifying field connections and enabling longer feeders or upgrades without rewiring. Feature → Business Impact → Application: UL Listed and NEC 230.62 barrier compliance streamline regulatory acceptance, while a 1-year warranty (18 months from shipment) provides confidence and predictable maintenance planning for distributed facilities.
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FAQs
To install the DH365NWKX, mount the unit in a suitable enclosure, connect three-phase conductors to the three poles, and wire the neutral through the fusible path as specified. Use conductors up to 750 kcmil Cu/Al and ensure the 600 V rating is appropriate for your system. Verify UL labeling and NEC compliance during wiring.
The switch is rated for 400 A, 600 V, with three-pole, four-wire configuration and a fusible with neutral arrangement. Fuse class is H, providing fast isolation. HP ratings are 250 and 350 hp for 3PH at 480/600 V, making it suitable for high-load motors in industrial processes.
Yes. The enclosure is EnviroLine stainless with a NEMA 4X rating, delivering superior corrosion resistance for outdoor, washdown, and harsh environments. This makes it well-suited for food & beverage, chemical processing, and coastal facilities where exposure to moisture and contaminants is common.
The DH365NWKX is UL Listed and complies with NEC 230.62 barrier requirements, with a NEMA 4X enclosure. These certifications ensure electrical safety, proper isolation, and suitability for harsh environments, facilitating regulatory approvals, installation in controlled safety programs, and smoother maintenance audits.
The product includes a one-year warranty from installation or 18 months from shipment, whichever occurs first. Regular inspection of connections and fuses, along with observing enclosure integrity and cleanliness in corrosive environments, helps maintain performance and extend service life.