Eaton DH365NDK Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH365NDK
Quick Summary
Eaton DH365NDK heavy duty fusible safety switch provides safe, reliable power isolation for large motor circuits in industrial facilities. Upgrading feeders or retrofitting older equipment can trigger downtime and arc-flash risk if the wrong switch is selected. This unit carries UL Listed status, NEC 230.62 barrier compliance, and a rugged NEMA 12/3R enclosure to withstand harsh environments. With a neutral and a 400 A rating supporting up to 350 hp at 480/600 V, it simplifies wiring for three-phase systems. The result is faster commissioning, improved safety, and lower lifecycle costs for your electrical protection strategy.
Product Information
Extended Description
DH365NDK Eaton: Eaton Heavy duty single-throw fused safety switch, 400 A, NEMA 12/3R, Painted galvanized steel, Class H, 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
DH365NDK
UPC
782113207346
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 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
400A
HP rating - max
250, 350 hp (3PH @480/600 V)
NEMA rating
NEMA 12/3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible with neutral
Feature → Business Impact → Application: 400 A amperage rating provides robust protection for large motor feeders, reducing nuisance trips and extending motor life in high-demand processes. This translates to lower maintenance costs and improved process uptime in packaging lines and conveyors. Feature → Business Impact → Application: Fusion with neutral and Class H fuse provision delivers precise coordination and safe shutdown, enabling safer maintenance and easier fault isolation in heavy machinery. Feature → Business Impact → Application: NEMA 12/3R enclosure with painted galvanized steel delivers excellent ingress protection in dusty or damp environments, lowering envelope damage and improving service intervals in outdoor or semi-indoor industrial environments. Feature → Business Impact → Application: Three-pole, four-wire design simplifies wiring for 600 V three-phase drives, facilitating faster installation and reducing wiring errors during panel retrofits. Feature → Business Impact → Application: UL Listed and NEC 230.62 barrier compliance provide assurance for code-adherent installations, supporting audit readiness and insurance requirements across manufacturing facilities. Feature → Business Impact → Application: Compact footprint with documented dimensions allows easier integration into existing switchgear layouts and minimizes required panel space during modernization projects.
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FAQs
Yes. The DH365NDK is a three-pole fusible safety switch configured for four conductors, with fuse configuration described as Fusible with neutral. It supports 600 V three-phase systems and includes a neutral conductor path, enabling safe neutral bonding and smoother connection to large motor feeders using copper or aluminum conductors up to (2) 300 kcmil, or (1) 750 kcmil Cu/Al as specified in the extension data. This simplifies wiring during panel upgrades and minimizes retrofit risk.
The unit features a NEMA 12, NEMA 3R enclosure and is constructed from painted galvanized steel for rugged protection in dusty or damp environments. Its dimensions are 11.2 inches in depth, 57.47 inches in height, and 22.66 inches in width, with an approximate weight of 135 pounds. This footprint fits a wide range of switchgear adjacencies and simplifies compatibility checks during modernization projects.
The DH365NDK is UL Listed and complies with NEC requirements such as NEC 230.62 barrier, supporting safe boundary protections. The enclosure’s NEMA 12/3R rating further confirms suitability for industrial environments with dust, moisture, and outdoor exposure. These certifications assist in passing regulatory audits and ensure alignment with typical electrical protection and switchgear standards in manufacturing facilities.
The switch is rated for 400 A at 600 V, with maximum horsepower ratings of 250 to 350 hp for three-phase operation at 480/600 V. It is a three-pole, fusible with neutral configuration designed to feed large motors and their drives. This makes it appropriate for large conveyor systems, presses, and other high-load machinery where robust protection and predictable isolation are critical.
Eaton provides a warranty of one year from date of installation or eighteen months from shipment, whichever occurs first (Eaton Selling Policy 25-000). This coverage supports preventive maintenance and manufacturer-backed fault diagnosis. For service continuity, pair the switch with Eaton’s documented datasheets and the included catalogs to ensure correct installation, commissioning, and spare parts availability.