Eaton DH324NDK Heavy Duty Fusible Safety Switch - NEMA 12/3R
Part Number: DH324NDK
Quick Summary
Eaton DH324NDK heavy duty fusible safety switch is designed to protect electrical distribution systems in industrial environments. It helps minimize downtime by providing reliable isolation during faults and maintenance, reducing arc-flash risk and unplanned outages. UL Listed; NEC 230.62 (C) compliant barrier; NEMA 12/3R enclosure ensure rugged performance in harsh environments. This unit also supports field modifications for NEMA 3R rainproof operation and accommodates Cu/Al conductors up to #6-300 kcmil, making it a cost-effective solution for main power distribution and motor-control panels.
Product Information
Extended Description
DH324NDK Eaton: Eaton Heavy duty single-throw fused safety switch, 200 A, NEMA 12/3R, Painted galvanized steel, Class H, Neutral, Three-pole, Four-wire, 240 V, Max Hp: 15, 25/ 15, 60/ 40 hp (1,3PH @Std/TD/250 Vdc), #6-300 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH324NDK
UPC
782113206745
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.
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Catalog Notes
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
15, 25/ 15, 60/ 40 hp (1,3PH @Std/TD/250 Vdc)
NEMA rating
NEMA 12/3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature → Business Impact → Application: The DH324NDK delivers a 200 A amperage rating at 240 V, enabling reliable main-line protection for high-demand feeders. This translates to lower nuisance trips, reduced arc-flash exposure, and improved uptime in heavy manufacturing environments. Use it in main power distribution panels and motor control panels. Feature → Business Impact → Application: NEMA 12/3R enclosure with painted galvanized steel provides rugged protection against dust, humidity, and incidental moisture. This enclosure reduces corrosion-related maintenance and extends service life, especially in processing plants and outdoor installations. Ideal for control cabinets and line-side protection in harsh factory floors. Feature → Business Impact → Application: Class H fuse provision and neutral conductor support simplifies protection coordination and ensures safe switching of large motors. This reduces fault energy and improves selectivity, meeting electrical codes in automated lines. Suitable for machine controls and feeder circuits requiring neutral reference. Feature → Business Impact → Application: Three-pole, four-wire configuration accommodates standard 4-wire systems and Cu/Al conductors up to #6-300 kcmil, streamlining installation. This minimizes copper losses and enables straightforward panel retrofits. Use in legacy or upgraded lines feeding multi-motor loads. Feature → Business Impact → Application: Field-modifiable NEMA 3R rainproof option via drain-hole modification provides outdoor compatibility without replacing the enclosure. This reduces total cost of ownership for plants with outdoor equipment or damp environments, maintaining compliance with NEC and UL when performed per guidelines. Feature → Business Impact → Application: UL Listed and NEC barrier-compliant design supports regulatory compliance audits and safer maintenance procedures. This reduces risk while offering long service life and predictable maintenance schedules; compatible with Cu/Al conductors and standard high-availability plant architectures.
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FAQs
DH324NDK is a three-pole, four-wire heavy-duty fusible safety switch rated for 200 A at 240 V. It includes a neutral and uses a NEMA 12/3R enclosure, compatible with Cu/Al conductors up to #6-300 kcmil. It fits standard industrial panels and supports field modifications for outdoor rainproof use.
Key specs include 200 A amperage, 240 V voltage, NEMA 12/3R enclosure, three-pole configuration, four conductors, Class H fuse provision, and HP ratings up to 15/25/15 and 60/40 hp for standard/TD applications at 250 Vdc, enabling robust protection for motor and load circuits.
Yes. The DH324NDK is UL Listed and designed to meet NEC 230.62 (C) barrier requirements. It’s rated for 240 V with a NEMA 12/3R enclosure, providing reliable protection in both indoor and damp environments while supporting safe maintenance procedures.
Yes. The catalog notes indicate field modification can meet NEMA 3R rainproof requirements by opening a factory drain hole. This enables outdoor or damp location installations while preserving the switch’s protective features and compliance with NEC and UL listings when performed per guidelines.
The DH324NDK offers long-term value through a rugged galvanized enclosure, UL listing, and a Class H fuse system that reduces fault propagation and downtime. Fewer maintenance cycles, extended fuse life under heavy loads, and easier field servicing translate to lower lifecycle cost and improved system uptime.