Eaton DH323NDKW Fusible Safety Switch - UL Listed
Part Number: DH323NDKW
Quick Summary
Eaton DH323NDKW heavy-duty fusible safety switch is designed to provide reliable isolation for industrial control panels and motor feeders. Engineers often grapple with downtime caused by complex safety devices and mis-wiring; this unit simplifies installation, reduces fault risk, and speeds maintenance. It carries UL Listed certification, uses a rugged NEMA 12/3R enclosure, and employs Class H fusing for selective protection. For project teams focusing on safety and uptime, it supports easy integration into low voltage control schemes and motor circuits while delivering robust protection and long-term value.
Product Information
Extended Description
DH323NDKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Enhanced visible blade, 100 A, NEMA 12/3R, Painted galvanized steel, Class H, Neutral, Three-pole, Four-wire, 240 V, Max Hp: 7.5, 15/ 30 hp (1,3PH @Std/3PH @TD), #14-#1/0 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH323NDKW
UPC
782114022658
Product Length/Depth
27 in
Product Height
12 in
Product Width
15 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.
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
Wire size
#14-1/0 AWG Cu/Al
Amperage Rating
100A
HP rating - max
15, 30/ 20 hp (3PH @Std, TD/250 Vdc)
NEMA rating
NEMA 12/3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH323NDKW
Selling Policy 25-000 - Distribution and Control Products and Services
Enclosure and environmental protection matter in harsh facilities. The NEMA 12, NEMA 3R painted galvanized steel enclosure provides dust and moisture resistance, with field modification capability to meet NEMA 3R rainproof requirements when drain holes are opened, enabling outdoor-ready installations. This translates to real business value: less enclosure swapping, fewer weather-related failures, and faster commissioning for industrial power distribution and control systems. The Class H fuse provision and fusible-with-neutral configuration support selective coordination, helping protect critical equipment while reducing nuisance fuse trips in complex motor and control circuits. With three poles and four wires, the switch ensures proper neutral handling and safe grounding for motor starters and control panels, improving reliability and simplifying wiring diagrams for maintenance teams. Rated at 100A and 240V, the unit accommodates common motor loads and control applications with predictable performance, while the #14-1/0 AWG Cu/Al wiring range offers flexibility for field terminations. The UL Listed certification reinforces compliance with safety standards, aiding audits and reducing procurement risk for industrial projects. The protective package is completed by a CS-approved warranty and Eaton’s support ecosystem, which minimizes downtime and extends life-cycle planning for critical facilities. For two-pole configurations, field adjustments using outside poles on a three-pole switch enable adaptable setups without separate hardware, streamlining install workflows and reducing stock needs.
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FAQs
The DH323NDKW is suited for motor control and power distribution in industrial facilities, including control panels and automated equipment rooms. It is a three-pole, four-wire device with a neutral connection, rated for 100A at 240V. Wiring supports #14-1/0 AWG Cu/Al, enabling flexible terminations for both control circuits and main feeders. For two-pole configurations, you can use the outside poles of a three-pole switch, simplifying certain installations without additional hardware.
Key specs include a 100A amperage rating and 240V voltage rating, with NEMA 12/3R enclosure protection. The fuse arrangement is Class H, and the unit is fusible with neutral, supporting proper overcurrent protection and balanced control circuitry. The maximum HP range (up to 15 hp standard and higher for three-phase configurations under TD/250VDC) informs which motors and loads are suitable, ensuring reliable protection without over-sizing. Wire size guidance is #14-1/0 AWG Cu/Al for versatile termination.
Yes, the DH323NDKW features a NEMA 12 enclosure with field-modifiable options to meet NEMA 3R rainproof requirements by opening a factory drain hole, enabling outdoor or damp environments while maintaining safety. This flexibility makes it suitable for plant floor areas, outdoor equipment rooms, and protected outdoor enclosures when properly configured. For true weatherproofing, consider enclosure integrity and drainage modifications per catalog notes.
UL Listed certification confirms compliance with recognized safety standards, simplifying audits, supplier qualification, and regulatory alignment. Class H fuse provision supports selective overcurrent protection, reducing nuisance trips and enabling coordinated protection for motors and control circuits. Together, they help maintain consistent safety performance, extend component life, and lower maintenance costs by reducing unplanned downtime.
Expect improved uptime from robust environmental protection and reliable overcurrent coordination, which lowers unplanned downtime in motor control applications. The unit’s 100A rating at 240V suits common industrial loads, while the durable painted galvanized enclosure reduces corrosion-driven repairs. A UL Listed product simplifies compliance overhead, and the included warranty (one year from installation or 18 months from shipment) provides financial protection during the early operation phase, contributing to favorable total cost of ownership.