Eaton DH366NDKW Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH366NDKW
Quick Summary
Eaton heavy duty fusible safety switch provides reliable motor protection for demanding industrial power circuits. This device addresses downtime from nuisance fuse failures and complex maintenance by delivering rugged, easy-to-service protection in a standard footprint. UL Listed certification supports regulatory compliance, and the NEMA 12/3R enclosure offers dust and moisture protection suitable for both indoor and outdoor environments. As a three-pole, four-wire switch rated for up to 600 V, it accommodates high-performance motors while enabling safe neutral handling. In practice, this means faster commissioning, lower maintenance costs, and improved safety across drives and panels. Trusted by engineers, it complements broader low- and medium-voltage protection strategies for reliable production workflows.
Product Information
Extended Description
DH366NDKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Enhanced visible blades, 600 A, NEMA 12/3R, Neutral, Three-pole, Four-wire, 600 V, Max Hp: 200, 400, 500 hp (3PH @240,480,600 V), (1)#2-(1)600 kcmil; and (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH366NDKW
UPC
782114140819
Product Length/Depth
18 in
Product Height
11 in
Product Width
9 in
Product Weight
163 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
200, 400, 500 hp (3PH @240,480,600 V)
NEMA rating
NEMA 12/3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible with neutral
600 A amperage rating enables handling of large motor loads without overloading the switch, reducing fuse-related interruptions and unplanned downtime. This directly translates to higher line throughput and safer, more predictable start-up in production lines. 600 V operation and the 200/400/500 hp (three-phase at 240, 480, 600 V) ratings give you a single protective solution across multiple motor sizes, simplifying stocking and maintenance. NEMA 12/3R enclosure protects the switch in dusty or damp environments, reducing environmental risk and speeding installation across plant floors. Three-pole, four-wire design with neutral simplifies wiring and enables safe, reliable control of three‑phase motors. Fusible with neutral configuration supports safe, predictable shut-down; Class H fuse provision ensures compatibility with high-energy faults. UL Listed certification provides validated safety and regulatory compliance; catalog notes offer flexibility for two-pole operation using outside poles in a 3-pole panel. A one-year warranty (or 18 months from shipment) adds a predictable service window for commissioning and maintenance.
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FAQs
DH366NDKW is specified as a three-pole, four-wire fusible safety switch with neutral. For 2-pole applications, use the outside poles of the 3-pole switch, as noted in the catalog. Always follow UL Listed installation instructions and national electrical codes when wiring.
Amperage rating is 600 A, voltage rating is 600 V. HP ratings cover 200, 400, and 500 hp for three-phase motors at 240, 480, and 600 V, providing a broad protection range with a single device.
Yes. The switch uses a NEMA 12/3R enclosure, offering protection against dust and moisture for both indoor and certain outdoor environments when installed in appropriate protected panels; UL Listed confirms safe, compliant use.
Key benefits include a neutral-conforming fusible configuration, Class H fuse provision, and UL Listed status, which together enable reliable isolation, safe shutdowns, and compatibility with high-energy faults in 3-phase motor systems.
Warranty terms are one year from installation or eighteen months from shipment, whichever occurs first, providing a defined window for commissioning support and post-installation service.