Eaton DH322NRKA1240 Heavy Duty Fusible Safety Switch - UL
Part Number: DH322NRKA1240
Quick Summary
Eaton heavy duty fusible safety switch provides reliable 240V circuit protection for industrial panels and equipment. When selecting protection, mismatched fusing, enclosure ratings, or missing neutral wiring can complicate installation and raise safety concerns. This model carries UL Listed certification, NEC 230.62 (C) compliant barrier, and a NEMA 3R enclosure to withstand harsh environments. Designed for OEMs and maintenance teams, it enables straightforward wiring with #14-2 Cu/Al and a three-pole, four-wire configuration, delivering strong protection while reducing downtime and installation complexity across your plant floor.
Product Information
Extended Description
DH322NRKA1240 Eaton: Eaton Heavy duty single-throw fused safety switch, 15A GFI receptacle, 240 Vac auxiliary circuit V, 60 A, NEMA 3R, Painted galvanized steel, Neutral, Three-pole, Four-wire, 240 V, Max Hp: 3, 7.5/ 15 hp (1,3PH @Std/3PH @TD), #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH322NRKA1240
UPC
782116418367
Product Length/Depth
10 in
Product Height
15.88 in
Product Width
8.13 in
Product Weight
20 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
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/ 15 hp (1,3PH @Std/3PH @TD)
NEMA rating
NEMA 3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH322NRKA1240
Feature → Business Impact → Application: 60A amperage rating and 240V operation with a three-pole, four-wire configuration supports common industrial motor loads up to 7.5/15 hp, enabling efficient protection without oversizing. This reduces energy waste and improves protective coordination in conveyors and pumps. Feature → Business Impact → Application: Fusible with neutral and Class H fuse provision offers fast disconnection and simplified maintenance, improving safety and enabling selective protection for mixed loads in packaging lines and material handling systems. Feature → Business Impact → Application: NEMA 3R painted galvanized steel enclosure provides weather and corrosion resistance, allowing outdoor or damp-area installations in outdoor equipment rooms or loading docks. Feature → Business Impact → Application: Wire size compatibility (#14-2 Cu/Al, 4 wires) streamlines field wiring and minimizes adapter requirements, accelerating panel upgrades and retrofits across multiple lines. Feature → Business Impact → Application: UL Listed with NEC barrier compliance ensures regulatory alignment and reduces audit risk in facilities pursuing strict safety programs, from food and beverage to energy utilities. Feature → Business Impact → Application: Compact 20 lb footprint and 10 in L x 15.88 in H x 8.13 in W dimensions simplify installation in tight panel zones and expedite service calls in OEM assembly lines and maintenance cleats.
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FAQs
Begin with de-energizing the panel and verifying location compatibility for a three-pole device. Mount the enclosure per NEMA 3R guidelines, connect 4 wires (three phases plus neutral), and wire the fusible elements to the load side. Ensure correct torque on terminations and confirm NEC barrier clearance. This model supports #14-2 Cu/Al conductors, simplifying field wiring and reducing installation time.
This switch is UL Listed, features NEC 230.62 (C) compliant barrier, and uses a NEMA 3R enclosure. These certifications confirm safe operation in industrial environments, simplify regulatory audits, and support safe outdoor installations. For facilities with formal safety programs, these attributes help meet code requirements and reduce risk during inspections.
Yes. The product uses a NEMA 3R enclosure and a painted galvanized steel enclosure material, which provide corrosion resistance and protection against water ingress in outdoor or damp locations. This makes it a strong candidate for outdoor equipment rooms, loading docks, and exposed industrial sites without additional enclosure upgrades.
The DH322NRKA1240 is a three-pole, four-wire device rated for 240V with a neutral. It accepts #14-2 AWG copper or aluminum conductors, streamlining integration with standard control and motor circuits. This compatibility reduces cabling complexity and supports straightforward upgrades in existing machines.
Eaton offers a warranty policy (25-000) providing one year from installation or eighteen months from shipment, whichever occurs first. For field support, contact Eaton’s technical support or your authorized distributor. Regular maintenance checks and timely fuse replacements help maximize uptime and ensure ongoing compliance with safety standards.