Eaton DH323NDK Heavy Duty Fusible Safety Switch - NEMA 12/3R
Part Number: DH323NDK
Quick Summary
The Eaton DH323NDK heavy duty fusible safety switch isolates power for 3-phase industrial equipment. Maintenance downtime and miswired control panels can derail projects, but this unit streamlines safe disconnection with minimal wiring changes. It is UL Listed, NEC 230.62 barrier compliant, and housed in a NEMA 12/3R enclosure, making it suitable for indoor use with damp locations. Designed to deliver reliable industrial electrical protection, it supports quick field wiring and straightforward maintenance, maximizing uptime in automated lines and packaging, metalworking, or process environments.
Product Information
Extended Description
DH323NDK Eaton: Eaton Heavy duty single-throw fused safety switch, 100 A, NEMA 12/3R, Painted galvanized steel, Class H, Fusible with neutral, Three-pole, Four-wire, 240 V, Max Hp: 7.5, 15/ 15, 30/ 20 hp (1,3PH @Std/TD/250 Vdc), #14-#1/0 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH323NDK
UPC
782113206332
Product Length/Depth
10.22 in
Product Height
24.95 in
Product Width
10.76 in
Product Weight
30 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
Wire size
#14-1/0 AWG Cu/Al
Amperage Rating
100A
HP rating - max
7.5, 15/ 15, 30/ 20 hp (1,3PH @Std/TD/250 Vdc)
NEMA rating
NEMA 12/3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature: 100A amperage rating ensures safe disconnection for high-load machines. Impact: Protects motors and control circuits while reducing fuse replacement frequency and downtime. Application: Ideal for 3-phase equipment in manufacturing lines requiring robust current interruption. Long-tail keywords: three-pole safety switch, 100A disconnect, industrial electrical protection.Feature: NEMA 12/3R enclosure with painted galvanized steel housing. Impact: Enhanced environmental protection and corrosion resistance in indoor, damp environments. Application: Suitable for panel mounting in factories and assembly floors with exposure to moisture. Long-tail keywords: NEMA 12 enclosure, NEMA 3R compatibility, corrosion-resistant fuse switch.Feature: Fuse configuration is fusible with neutral using Class H fuses. Impact: Improved selective coordination and safer neutral return paths, reducing arc-flash risk. Application: Protective disconnection for equipment requiring neutral continuity during fault conditions. Long-tail keywords: Class H fuse, fusible with neutral, protective switchgear.Feature: Three-pole, four-wire design supporting Cu/Al wiring from #14 to #1/0. Impact: Flexible installation with common wiring gauges, enabling quick integration into existing control circuits. Application: Industrial machines and panels with mixed conductor types. Long-tail keywords: Cu/Al wiring, wire size #14-1/0, three-pole safety device.Feature: Field modification option to meet NEMA 3R rainproof requirements by opening a factory drain hole. Impact: Field adaptability for outdoor or damp locations without replacing components. Application: Outdoor enclosures or sheltered outdoor areas in plant grounds. Long-tail keywords: field-mod compatible, NEMA 3R rainproof, drain hole modification.Additional value: UL Listed and NEC 230.62 compliant barrier support safe operation; compatibility with Cu/Al wires ensures broad panel compatibility; warranty policy provides protection during installation and operation.
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FAQs
The DH323NDK is a three-pole, four-wire disconnect rated at 100A, designed to fit standard 3-phase 240V panels. It accepts Cu/Al wire sizes from #14 to #1/0, simplifying retrofit into existing control cabinets. Its NEMA 12/3R enclosure ensures suitable protection for indoor and damp environments, and its neutral-fused configuration supports reliable system isolation with minimal wiring changes.
Key specs include a 100A amperage rating, maximum HP ratings of 7.5 and 15/30 hp for various configurations, 240V operating voltage, and NEMA 12/3R enclosure. It is a three-pole fusible switch with neutral, Class H fuse provision, and UL Listed. These attributes support safe, code-compliant disconnection for machine protection and line isolation.
The product ships as a NEMA 12/3R enclosure, optimized for indoor and damp locations. For outdoor or rain-prone environments, it can be field modified to meet NEMA 3R rainproof requirements by opening the drain hole provided by the factory. This makes it adaptable for protected outdoor panels or sheltered outdoor installations when required.
The DH323NDK is UL Listed and compliant with NEC 230.62 barrier requirements, ensuring safe clearances and barrier integrity in electrical installations. Its NEMA 12/3R enclosure aligns with industrial protection standards, supporting safe panel mounting and reliable performance across demanding environments.
With a 100A rating and robust enclosure, this switch reduces unplanned outages by delivering reliable isolation during faults. The UL listing and field-mod compatibility can lower lifecycle costs by simplifying upgrades and compliance tasks, while the one-year warranty (or 18 months from shipment) provides a clear short-term protection window, helping stabilize maintenance budgets.