Eaton DH321FRK Heavy duty fusible safety switch - UL Listed
Part Number: DH321FRK
Quick Summary
Eaton heavy duty fusible safety switch provides reliable motor circuit protection for industrial equipment and service entrances. This solution addresses downtime and nuisance trips by offering fast, fuse-protected switching with clear status at a glance. Built for harsh environments with a NEMA 3R enclosure and a painted galvanized steel body, it combines robust protection with straightforward maintenance. UL Listed certification underpins compliance, while the 30 A amperage rating and 240 V supply support a wide range of small- to mid-sized drives. For installers and procurement teams, the neutral-kit option and service-entrance compatibility translate to simplified wiring, reduced component count, and faster project delivery. In short, it delivers safety, reliability, and lifecycle efficiency for industrial control panels.
Product Information
Extended Description
DH321FRK Eaton: Eaton Enhanced visible blade single-throw safety switch, 30 A, NEMA 3R, Painted galvanized steel, Class H, Fusible without neutral, Three-pole, Three-wire, 240 V, Max Hp: 1.5, 3/ 3, 7.5/ 5 hp (1,3PH @Std/TD, 250 Vdc), #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH321FRK
UPC
782113208497
Product Length/Depth
16.5 in
Product Height
16.27 in
Product Width
9.5 in
Product Weight
10 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
Suitable for service entrance use with a Neutral Kit installed
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class H
Fuse configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Heavy duty fusible safety switch
Wire size
#14-2 AWG Cu/Al
Amperage Rating
30A
HP rating - max
1.5, 3/ 3, 7.5/ 5 hp (1,3PH @Std/TD, 250 Vdc)
NEMA rating
NEMA 3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible without neutral
30A, 240V operation enables precise motor protection and scalable protection for a wide range of small to mid-size drive applications, reducing downtime and costly faulting. This feature directly lowers maintenance costs and extends motor life by providing fast, fuse-protected switching in a compact three-pole enclosure. The application spans service entrances and control panels where space is at a premium and reliable protection is critical. Fusible without neutral design simplifies wiring topology, lowers installation costs, and reduces panel complexity for standard industrial layouts. The Class H fuse provision delivers robust protection with predictable clearing, minimizing nuisance trips and maximizing equipment uptime across harsh factory environments. NEMA 3R enclosure and painted galvanized steel further enhance weather and dust resistance, enabling dependable protection in indoor and outdoor spaces. UL Listed certification supports regulatory compliance and customer assurance, while Neutral Kit compatibility enables service-entrance configurations without rework. Its compact footprint and 16.5 in depth, 16.27 in height, and 9.5 in width support retrofit projects and new panel builds alike. With a 30A rating and 240V operation, this switch delivers reliable protection for motors up to several horsepower ranges, aligning with common industrial loads and reducing total cost of ownership through longer service intervals and fewer component replacements.
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FAQs
Yes. The DH321FRK is suitable for service-entry configurations with a Neutral Kit installed, allowing seamless integration into main electrical panels. It is a three-pole, three-wire device rated for 30A at 240V, designed to fit standard control panels and service entrances without requiring major rewiring. This reduces project risk and accelerates commissioning in new builds or retrofits.
The device provides a 30A amperage rating, 240V voltage rating, and supports motor HP ranges up to 1.5, 3/3, and 7.5/5 hp (1,3PH Std/TD, 250Vdc). It is a three-pole, three-wire fusible switch with Class H fuses and a fusible without neutral configuration, enabling straightforward protection for a wide range of small to mid-size motors.
Yes. The DH321FRK is UL Listed, and it uses a NEMA 3R enclosure with a painted galvanized steel body, providing reliable protection against rain, dust, and incidental impact in both indoor and outdoor industrial settings. This combination supports consistent performance in harsh factory environments while meeting regulatory requirements.
Official documents include the Eaton specification sheet for DH321FRK and the Commercial Distribution, Switching Devices catalog references. The specification sheet provides detailed electrical ratings and installation notes, while the catalog notes clarify service entrance suitability and neutral kit compatibility for project planning and procurement decisions.
The DH321FRK measures 16.5 inches in depth, 16.27 inches in height, and 9.5 inches in width, with an approximate weight of 10 pounds. These dimensions support ergonomic installation and straightforward fitment in compact control panels or service enclosures.