Eaton DH322NRK Heavy Duty Fusible Safety Switch UL Listed

Part Number: DH322NRK
Manufacturer
Eaton
Part number
DH322NRK

Quick Summary

Eaton heavy duty fusible safety switch protects 3-phase motor circuits in industrial applications. This rugged disconnect is designed to simplify panel design while delivering dependable protection in demanding environments. UL Listed and NEMA 3R-rated, the enclosure provides weather-resistant safety for outdoor and harsh indoor installations, while the Class H fuse provisions ensure reliable interrupting performance. The device supports fusible with neutral configurations and three-pole four-wire wiring, making it a versatile choice for OEMs, panel builders, and maintenance teams seeking compliant, space-efficient power-disconnects with straightforward installation and predictable lifecycle costs.

Product Information

Extended Description

DH322NRK Eaton: Eaton Enhanced visible blade single-throw safety switch, 60 A, NEMA 3R, Painted galvanized steel, Class H, Fusible with neutral, Three-pole, Four-wire, 240 V, Max Hp: 3, 7.5/ 10, 15/ 10 hp (1,3PH @Std/TD/250 Vdc), #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH322NRK
UPC
782113205830
Product Length/Depth
16.5 in
Product Height
16.27 in
Product Width
9.5 in
Product Weight
15 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 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
#14-2 AWG Cu/Al
Amperage Rating
60A
HP rating - max
3, 7.5/ 10, 15/ 10 hp (1,3PH @Std/TD/250 Vdc)
NEMA rating
NEMA 3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature → Business Impact → Application: The 60A amperage rating supports handling motor loads up to 15 hp on three-phase systems, reducing nuisance tripping and protecting downstream equipment, which translates to lower downtime and safer shutdowns in manufacturing lines. Application: Motor control centers and process lines with 240 V supply benefit from reliable protection that aligns with standard motor starter architectures. Feature → Business Impact → Application: Three-pole, four-wire configuration with fusible neutral provides clean, fault-tolerant disconnects and simplifies wiring schemes, cutting installation time and minimizing wiring errors in panel builds. Application: OEM switchgear enclosures and standalone disconnects in harsh environments. Feature → Business Impact → Application: NEMA 3R enclosure with painted galvanized steel offers weather resistance and durable exterior protection, extending service life for outdoor installations and industrial sites with exposure to dust and moisture. Application: Outdoor pump stations, conveyor lines, and outdoor control panels. Feature → Business Impact → Application: UL Listed certification and Class H fuse provisions ensure compliance and superior interrupting performance, reducing risk during maintenance and facilitating regulatory acceptance. Application: Facilities pursuing standardization across devices and safer, auditable disconnections. Feature → Business Impact → Application: 240 V operation with #14-2 AWG Cu/Al wiring supports straightforward field connections and compatibility with common conductor sizes, accelerating wiring and reducing labor costs. Application: Retrofit projects and new builds in light-to-medium industrial automation. Feature → Business Impact → Application: Heavy duty fusible safety switch design minimizes spare parts inventory and maintenance overhead, delivering predictable lifecycle costs and easier training for plant technicians.

Get a Quick Quote for a Eaton DH322NRK

Chat with us on WhatsApp - fast responses guaranteed

Need to speak with someone? We'll call you back within 2 hours during business hours

Interested in Eaton DH322NRK? Enquire Now

FAQs

DH322NRK is designed for three-phase, four-wire systems operating at 240 V. With a three-pole configuration and fusible with neutral provisions, wire the device into the main circuit per OEM drawings, ensuring #14-2 AWG Cu/Al conductors are used as specified. Mounting should use the NEMA 3R enclosure and consider clearances for service access. Always de-energize the system and verify LOTO procedures before installation to maintain safety and compliance.
The DH322NRK offers a 60A amperage rating and supports motor HP ratings up to 3, 7.5/10, and 15/10 hp on 1,3PH at Std/TD/250 Vdc. It operates at 240V and features a fusible with neutral configuration across three poles and four wires. This combination provides safe, code-compliant isolation for medium-duty motors and equipment while enabling straightforward integration with existing control circuits.
Yes. The enclosure is NEMA 3R-rated with painted galvanized steel construction, designed for outdoor and challenging indoor environments. This rugged build helps resist weather, dust, and moisture ingress, enabling reliable operation in exterior inlet boxes, outdoor conveyors, and rugged industrial spaces without extra housings or protective enclosures.
The DH322NRK is UL Listed, ensuring compliance with recognized safety standards for electrical protection devices. Its NEMA 3R enclosure confirms suitability for outdoor and exposed installations. The product’s fuse class and neutral configuration support compliance with standard motor protection practices, making it a dependable choice for regulated industrial environments.
Regular inspection of the fusible elements, verification of terminal integrity, and periodic functional testing are recommended. Use the provided warranty terms (one year from installation or eighteen months from shipment) as a baseline for reliability planning. Maintaining a spare-fuse strategy and documenting fault history can reduce downtime, improve predictability, and lower total cost of ownership over the device’s life.