Eaton DH327NDK Heavy Duty Fusible Safety Switch UL
Part Number: DH327NDK
Quick Summary
Eaton DH327NDK heavy duty fusible safety switch protects motor circuits in industrial power systems. When protection devices are hard to install or prone to miswiring, downtime and maintenance costs rise. Key certifications include UL Listed safety certification and a rugged NEMA 12 enclosure for dusty, harsh environments, with the enclosure protecting against dust and light splashing. This combination delivers reliable protection for high-demand lines, while offering installation efficiency and predictable lifecycle costs for industrial motor control and power distribution systems.
Product Information
Extended Description
DH327NDK Eaton: Eaton Enhanced visible blade single-throw safety switch, 800 A, NEMA 12, Painted galvanized steel, Class L, Fusible with neutral, Three-pole, Four-wire, 240 V, Max Hp: 100 hp (3PH @Std), (4)#1/0-(4)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH327NDK
UPC
786685234892
Product Length/Depth
14.25 in
Product Height
71.75 in
Product Width
25.38 in
Product Weight
213 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
Enclosure
NEMA 12
Enclosure material
Painted galvanized steel
Fuse class provision
Class L
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
800A
HP rating - max
100 hp (3PH @Std)
NEMA rating
NEMA 12/3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature: 800 A amperage rating on a three-pole, four-wire configuration. Benefit: Provides robust protection for high-demand motors and minimizes fault spread, reducing unplanned downtime. Application: Suitable for heavy motor loads in conveyors, pumps, and plant machinery. Feature: 240 V operation with NEMA 12 enclosure. Benefit: Enclosure guards against dust and light liquids, improving reliability in dusty factories and humid environments. Application: Ideal for manufacturing floors and processing lines demanding rugged enclosures. Feature: Fusible with neutral, Class L fuse provision. Benefit: Enables selective protection and safe fault isolation, which lowers arc flash risk and simplifies maintenance. Application: Central motor control panels and switchgear assemblies. Feature: Three-pole, four-wire design with a 100 hp max rating. Benefit: Supports medium to large motor applications without overbuilding, reducing total installed cost. Application: Motors up to 100 hp in line-start configurations. Feature: Painted galvanized steel enclosure and industrial-grade construction. Benefit: Long service life with resistance to corrosion and impact, lowering replacement frequency. Application: Outdoor or semi-outdoor installations with frequent maintenance access. Feature: UL Listed certification. Benefit: Aligns with safety codes and procurement standards, easing compliance and audit readiness. Application: Federal, state, and local electrical compliance programs.
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FAQs
Begin by ensuring the power is de-energized and confirm wiring diagrams. Mount the DH327NDK in its NEMA 12 enclosure, connect the three phase lines to L1-L3, connect the neutral to the neutral terminal, and place the fusible links in the Class L provision. Verify alignment, torque settings, and perform a functional check with protective devices coordinated with upstream protection.
The DH327NDK supports an 800 A amperage rating, operates at 240 V, and is configured as a three-pole, four-wire device with fusible protection and neutral. It is rated for up to 100 hp (three-phase, standard), and uses a NEMA 12/3R enclosure. It carries UL Listed certification for safety compliance.
Yes. The DH327NDK uses a NEMA 12 enclosure with painted galvanized steel, designed to protect against dust and some liquids in harsh environments. This makes it suitable for manufacturing floors, packaging lines, and other areas where particulate exposure is common, helping maintain reliability and reducing maintenance intervals.
The DH327NDK is UL Listed, which supports conformity with safety and electrical codes in many markets. While it does not specify SIL, CE, or IP ratings in the provided data, UL Listing combined with the NEMA 12 enclosure helps align deployment with typical industrial protection standards and procurement specifications for motor control and power distribution.
The rugged, galvanized enclosure and Class L fusible protection deliver durable protection with predictable replacement cycles, reducing unexpected downtime. Its high current capacity and compact integration with three-pole stations simplify panel layouts, potentially lowering installation time and total cost of ownership while improving line availability and safety.