Eaton DH323NRKA1240 Heavy Duty Fusible Safety Switch - 3R
Part Number: DH323NRKA1240
Quick Summary
The Eaton heavy duty fusible safety switch DH323NRKA1240 provides reliable isolation for 3-phase power in challenging industrial environments. Engineers often contend with downtime, miswiring, and noncompliant enclosures that derail project timelines. This unit carries UL Listed certification, a NEMA 3R enclosure, and NEC 230.62(C) compliant barrier to help meet regulatory and safety requirements. With a 100 A rating at 240 V and a fusible-with-neutral configuration, it supports robust control circuits while protecting both equipment and personnel. The design also emphasizes ease of installation and long-term maintenance, delivering lower total cost of ownership for plant operators.
Product Information
Extended Description
DH323NRKA1240 Eaton: Eaton Heavy duty single-throw fused safety switch, 15A GFI receptacle, 240 Vac auxiliary circuit V, 100 A, NEMA 3R, Painted galvanized steel, 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
DH323NRKA1240
UPC
782116418374
Product Length/Depth
10 in
Product Height
21.69 in
Product Width
11.13 in
Product Weight
27 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
#14-1/0 AWG Cu/Al
Amperage Rating
100A
HP rating - max
7.5, 15/ 30 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 - DH323NRKA1240
100 A amperage rating with 240 V operation provides robust protection for 3-phase motor loads. The three-pole design with four-wire wiring enables fusible with neutral, delivering reliable isolation during fault events. In practice this reduces nuisance trips and improves uptime for pumps, conveyors, and fans in harsh industrial environments. The NEMA 3R enclosure formed from painted galvanized steel offers outdoor suitability and corrosion resistance, allowing installation near outdoor equipment and safeguarding internal components from dust, rain, and incidental contact. Fuse class provision Class H and fusible with neutral support selective coordination and safe shutdown without backfeeding, simplify control wiring and reduce panel space while preserving fast fault clearance. Wire size range of #14-1/0 Cu/Al and four-wire configuration ensures compatibility with common plant wiring practices and power distribution schemes, supporting retrofit and new builds alike. UL Listed certification and NEC 230.62(C) compliant barrier meet essential regulatory and safety standards, helping you satisfy QA requirements and customer expectations. A one-year Eaton warranty under policy 25-000 provides additional protection against manufacturing defects, reinforcing long-term reliability. Overall dimensions and weight offer a compact yet rugged footprint: approximately 10 in deep, 21.69 in high, 11.13 in wide, and about 27 lb, making field installations and retrofits straightforward.
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FAQs
The unit supports 3-phase 240 V operation with a three-pole, four-wire design and a fusible with neutral configuration. Wire size compatibility includes #14-1/0 AWG Cu/Al, enabling flexible wiring for control circuits and main power connections while maintaining safe, code-compliant isolation.
This safety switch is UL Listed and housed in a NEMA 3R enclosure. It complies with NEC 230.62(C) barrier requirements, providing safe outdoor or damp-location performance and regulatory alignment for electrical installations in harsh environments.
Yes. The NEMA 3R enclosure, constructed from painted galvanized steel, is designed for outdoor or harsh indoor locations, offering protection against rain, dust, and corrosion while maintaining accessibility for maintenance and service.
The enclosure measures 10 in in depth, 21.69 in in height, and 11.13 in in width, with an approximate weight of 27 lb. This compact footprint supports easier installation in existing panels or limited-space locations without compromising protection.
Rated for 100 A at 240 V, the maximum HP coverage is 7.5 HP for standard 1-phase service and up to 15/30 HP for certain 3-phase configurations under TD (thermal delayed) conditions. This makes it suitable for small to mid-size motors and equipment in manufacturing lines, conveyors, and processing systems.