Eaton DH323FRK Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH323FRK
Quick Summary
Eaton DH323FRK heavy duty fusible safety switch provides safe isolation for three‑phase industrial equipment. This design aims to minimize downtime and streamline maintenance by delivering quick, reliable disconnection during fault events. The unit carries UL Listed approval and a NEMA 3R enclosure, with a Class H fuse for robust protection in varied environments. Suitable for service entrances when a Neutral Kit is installed, it also supports standard #14-1/0 Cu/Al wiring. In practice, that means dependable protection for motors, conveyors, and automated systems while aligning with code compliance and safety programs. For engineers and procurement teams, this translates to a proven balance of protection, longevity, and total cost of ownership.
Product Information
Extended Description
DH323FRK Eaton: Eaton Enhanced visible blade single-throw safety switch, 100 A, NEMA 3R, Painted galvanized steel, Class H, Fusible without neutral, Three-pole, Three-wire, 240 V, Max Hp: 7.5, 15/ 15, 30/ 20 hp (1,3PH @Std/TD/250 Vdc), #14-#1/0 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH323FRK
UPC
782113206257
Product Length/Depth
22.5 in
Product Height
9 in
Product Width
12.75 in
Product Weight
25 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
#14-1/0 AWG Cu/Al
Amperage Rating
100A
HP rating - max
7.5, 15/ 15, 30/ 20 hp (1,3PH @Std/TD/250 Vdc)
NEMA rating
NEMA 3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible without neutral
Feature → Business Impact → Application: 100A amperage rating provides strong fault isolation, reducing the risk of cascading electrical faults and minimizing equipment damage in industrial lines. This translates to lower maintenance costs and improved uptime across manufacturing cells and packing lines. Application: machine safety and service panels where high inrush currents are common. Feature → Business Impact → Application: NEMA 3R enclosure with painted galvanized steel delivers weather resistance and outdoor capability, increasing system availability in loading docks, outdoor controls, and exposed installations. Application: outdoor motors, conveyors, and HVAC controls. Feature → Business Impact → Application: Three-pole, three-wire configuration with fusible without neutral simplifies wiring and installation while enabling quick disconnects in control cabinets. Application: plant-wide distribution and control circuits needing reliable isolation. Feature → Business Impact → Application: Class H fuse provision aligns with standard fusing practices, ensuring predictable coordination with upstream protection and easier spare part management. Application: spare parts planning and service continuity. Feature → Business Impact → Application: 240V, 100A rating supports common industrial motors and equipment, delivering efficient protection without excessive headroom or wasted energy. Application: medium‑sized motors and machinery. Feature → Business Impact → Application: Suitable for service entrances with Neutral Kit installed, expanding compatibility with main service equipment and upholding safe service practices. Application: utility入口 and main disconnect scenarios.
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FAQs
The DH323FRK is designed for three‑phase industrial systems and service entrances where reliable isolation is critical. Its 100A rating, three‑pole configuration, and 240V operation make it ideal for protecting motors, conveyors, and automated equipment. The NEMA 3R enclosure supports indoor and outdoor installations, while the Neutral Kit option broadens compatibility with main service panels and control cabinets.
The 100A rating delivers robust overcurrent protection for mid‑sized industrial loads, preventing damage from short circuits and overloads. The 240V rating aligns with common motor and equipment circuits, enabling proper coordination with upstream protection devices. This combination reduces fault energy, enhances safety, and supports predictable maintenance intervals without oversized disconnects.
Yes. The DH323FRK features a NEMA 3R enclosure and painted galvanized steel construction, providing weather resistance and durable outdoor performance. This makes it suitable for outdoor switchgear, exposed installations, or areas with washdown requirements, helping maintain uptime even in harsh environments.
The unit is configured as fusible without neutral by design, but it is suitable for service entrance use with a Neutral Kit installed if your application requires neutral access at the disconnect. This flexibility supports installation in a wider range of electrical service configurations while preserving safe isolation.
Eaton provides a specification sheet and product catalogs for the DH323FRK. The datasheets cover wiring, enclosure, fuse class, and rating details, aiding accurate sizing, clearance planning, and code compliance. Customers benefit from clear installation guidance and up-to-date technical data for procurement and maintenance planning.