Eaton DH365NDKW Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH365NDKW
Quick Summary
The Eaton DH365NDKW heavy duty fusible safety switch protects four-wire, three-pole motor circuits in industrial power distribution. Design teams often struggle with safe shutdown, quick maintenance access, and reliable fault isolation in harsh environments. UL Listed certification ensures electrical safety compliance, while the NEMA 12/3R enclosure provides rugged protection against dust, moisture, and incidental exposure. With a 400 A capacity and a 600 V rating, plus a neutral-including fuse design, this switch delivers dependable performance and clear, long-term value for mission-critical applications in industrial facilities.
Product Information
Extended Description
DH365NDKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Enhanced visible blades, upper viewing window, 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)
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH365NDKW
UPC
782114140796
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.
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
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 to benefit: High amperage and horsepower ratings enable direct protection of large motors and reduces the need for multiple smaller disconnects, lowering installation complexity and total cost of ownership. Application: Industrial motor control centers, manufacturing lines, and heavy machinery feed panels benefit from streamlined wiring and faster commissioning. Feature to benefit: NEMA 12/3R enclosure provides indoor and outdoor protection against dust, moisture, and incidental ingress, improving uptime and reducing maintenance cycles. Application: Panels in dirty or damp environments, conveyors, and processing plants gain reliable enclosure protection. Feature to benefit: Painted galvanized steel enclosure offers corrosion resistance and long service life in harsh environments, lowering replacement frequency and downtime. Application: OEM panels, field-installed disconnects, and retrofit projects with demanding exposure. Feature to benefit: Class H fuse provision and fusible with neutral configuration deliver safe, code-compliant isolation with fault current interruption, improving safety margins and compliance. Application: High-energy, three-phase systems with neutral where safe disconnection is essential. Feature to benefit: Enhanced visible blades and upper viewing window enable quick status checks without opening the enclosure, reducing maintenance time and improving first-time fault diagnosis. Application: Routine inspections, shift handovers, and remote monitoring scenarios. Feature to benefit: Three-pole, four-wire design supports standard 3PH 4W configurations, matching common industrial motors and drives, simplifying integration and stocking. Application: New installs and retrofits across industrial plants where standardization matters.
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FAQs
Plan for a three-pole, four-wire disconnect with neutral, sized for 400 A and 600 V. The unit dimensions are 11.2 in depth, 22.66 in width, and 57.47 in height with an approximate weight of 135 lb, so ensure adequate clearance and panel space per the enclosure type (NEMA 12, NEMA 3R). Verify inside/outside mounting suitability and follow lockout/tagout procedures during installation.
Yes. The DH365NDKW is rated for 600 V three-phase systems and supports motor horsepower up to 250 hp for general applications and 350 hp when operating at 480/600 V, matching common industrial motor loads and minimizing the need for multiple safety switches.
The switch uses a NEMA 12/3R enclosure with a painted galvanized steel body, providing protection against dust and moisture for indoor and weather-protected outdoor installations. This enhances reliability in dusty plants or damp environments and supports long service life with reduced maintenance.
The DH365NDKW is UL Listed, ensuring compliance with electrical safety standards for control equipment. Its NEMA 12/3R enclosure rating further aligns with industry expectations for protective enclosures in varied environments, contributing to overall safety and regulatory readiness.
The unit’s robust galvanized enclosure, enhanced visible blades, and upper viewing window reduce maintenance time and downtime by enabling quick status checks without panel entry. A one-year warranty from installation (or 18 months from shipment) provides initial protection, while reliability and reduced panel downtime translate into lower lifecycle costs and improved project ROI.