Eaton DH364NDKW Heavy Duty Fusible Safety Switch - UL
Part Number: DH364NDKW
Quick Summary
The Eaton heavy duty fusible safety switch DH364NDKW provides reliable circuit protection for industrial control panels and motor feeders. If you’re wrestling with downtime from fuse failures or difficult maintenance, this unit simplifies installation and service. UL Listed certification accompanies a NEMA 12/3R enclosure, painted galvanized steel construction, and a field-modifiable drain hole option for NEMA 3R rainproofing. With 200 A amperage and HP ratings up to 150 hp (1/3 PH @ 480/600 V), it scales across medium-voltage motor circuits while meeting safety compliance. This design integrates a neutral, enhanced visible blades, and compatible 4-wire wiring to streamline panel assembly and reduce total cost of ownership.
Product Information
Extended Description
DH364NDKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Enhanced visible blades, 200 A, NEMA 12/3R, Painted galvanized steel, Neutral, Three-pole, Four-wire, 600 V, Max Hp: 50, 50/ 125, 150 hp (1/3PH @480, 600 V), #6-300 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH364NDKW
UPC
782114136645
Product Length/Depth
11.63 in
Product Height
35.38 in
Product Width
15.5 in
Product Weight
56 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. Can be field modified to meetNEMA 3R rainproof requirements when a factory provided drain hole is opened.
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
200A
HP rating - max
50, 50/ 125, 150 hp (1/3PH @480, 600 V)
NEMA rating
NEMA 12/3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible with neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH364NDKW
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: Three-pole, four-wire fusible with neutral enables safe, balanced protection for three-phase equipment and provides a return path for unbalanced loads, reducing arc flash risk in motor circuits and enabling straightforward control wiring for MCCs and distribution panels. This improves reliability and reduces mean time to repair during maintenance windows. Application: Motor control centers and industrial distribution panels needing robust four-wire protection. Feature → Business Impact → Application: 200 A amperage rating supports larger drives and conveyors while limiting nuisance fuse trips, cutting replacement costs and downtime. Applicability spans manufacturing lines, packaging, and material handling where uptime is critical. Feature → Business Impact → Application: NEMA 12/3R enclosure with painted galvanized steel delivers dust and moisture resistance in indoor environments and select outdoor spaces after field modification for rain exposure. This lowers enclosure corrosion risk and extends service life in challenging plants. Feature → Business Impact → Application: Enhanced visible blades enable quick status checks during routine maintenance, reducing lockout times and improving safety audits across plant floors. Feature → Business Impact → Application: Fuse class provision Class H and fusible with neutral simplify compliance with standard protection schemes and provide predictable coordination with upstream protective devices. This supports safer, more reliable protective schemes in mixed-age equipment. Feature → Business Impact → Application: 600 V rating and HP maximums of 50/125/150 hp enable scalable protection for a range of motors and drives, supporting phased upgrades without changing switchgear. This aids lifecycle planning and ROI justification. Feature → Business Impact → Application: Field modification capability to meet NEMA 3R rainproof requirements via drain hole opening offers outdoor or semi-outdoor installation flexibility without replacing the enclosure. This reduces project timelines and capex for outdoor applications.
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FAQs
The DH364NDKW is a three-pole, four-wire switch with neutral, designed for panel integration in standard low-voltage motor control configurations. It supports field modification for NEMA 3R rainproofing by utilizing a factory drain hole. Use outside poles of a 3-pole switch for two-pole applications when appropriate, and route neutral conductor to the appropriate terminal block to ensure correct fault protection and proper coordination with upstream devices.
This switch provides a 200 A amperage rating and Hp ratings up to 50/125/150 hp at 1/3-phase, 480/600 V, enabling protection for medium-sized motors and drives. Rated for 600 V and equipped with Class H fuse provision, it delivers predictable fuse protection and fast disconnect. These specs support reliable motor startup protection while minimizing nuisance trips in typical production lines.
Yes, the enclosure is rated NEMA 12 and can be field modified to meet NEMA 3R rainproof requirements by opening a drain hole provided by factory options. The painted galvanized steel enclosure adds corrosion resistance for indoor use, and the optional 3R modification extends outdoor applicability when paired with proper installation practices and seal integrity.
The DH364NDKW carries UL Listed certification, confirming compliance with recognized safety standards for electrical protection devices. Its NEMA 12/3R enclosure rating further supports compliance with environmental protection requirements for dust and moisture. These certifications help streamline procurement, installation, and safety audits in regulated facilities.
Warranty terms follow Eaton Selling Policy 25-000, offering one year from the date of installation or eighteen months from shipment, whichever occurs first. This provides coverage for manufacturing defects and workmanship. For service continuity, maintain documented installation dates and reference the policy during any service or replacement discussions with Eaton or authorized distributors.