Eaton DH321FWK Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH321FWK
Quick Summary
Eaton DH321FWK heavy duty fusible safety switch protects motors and equipment in demanding industrial panels. This robust three-pole device interrupts heavy loads precisely at 30A and 240V, reducing downtime and protecting downstream controls. Operators often wrestle with corrosion-prone enclosures and inconsistent protection that lead to unexpected outages; this unit addresses those concerns with a 304 stainless steel enclosure rated NEMA 4X. UL Listed certification further supports compliance with current electrical codes, while the fuse provision (Class H) provides reliable, localised protection for motor circuits. It's designed for service entrances with a neutral or ground lug kit installed, ensuring straightforward installation and dependable performance in harsh environments.
Product Information
Extended Description
DH321FWK Eaton: Eaton Enhanced visible blade single-throw safety switch, 30 A, NEMA 4X, 304 stainless 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
DH321FWK
UPC
782113205427
Product Length/Depth
20 in
Product Height
8.5 in
Product Width
9.5 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.
Certifications
UL Listed
Catalog Notes
Suitable for service entrance use with a neutral or ground lug kit installed
Enclosure
NEMA 4X
Enclosure material
304 stainless 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 4X (Stainless)
Voltage rating
240V
Product Category
Heavy Duty, Fusible without neutral
Feature: 304 stainless steel enclosure with a NEMA 4X rating. Business Impact: Provides superior corrosion resistance and reliable operation in washdown, outdoor, or humid environments, extending service life and reducing maintenance. Application: Ideal for metal fabrication, food processing, and packaging lines that face wet or harsh conditions. Feature: Fusible configuration is fusible without neutral, with Class H fuse provision. Business Impact: Delivers dependable protection and safe isolation for motor circuits, improving fault response and safety. Application: Suited for three-pole, three-wire control circuits in 240V systems delivering reliable overload protection. Feature: Amperage rating 30A and HP ratings up to 7.5/5 hp on 1 or 3-phase at 250 Vdc. Business Impact: Matches common industrial loads while enabling precise coordination with downstream starters and drives. Application: Conveyor belts, pumps, and other heavy machinery in mixed-voltage environments. Feature: Wiring size #14-2 AWG Cu/Al and three wires. Business Impact: Facilitates direct feeder connections and simplifies field terminations, reducing wiring errors. Application: Service entrances and panel outfits where standard Cu/Al conductors are used. Feature: UL Listed certification and service-entrance readiness. Business Impact: Enhances regulatory compliance and supplier confidence, while the catalog notes support neutral/ground lug kits for flexible installation. Application: Industrial panels requiring robust protection with proven electrical certification and ready-for-service installation.
Get a Quick Quote for a Eaton DH321FWK
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 DH321FWK?
Enquire Now
FAQs
DH321FWK is designed for three-pole 240V service entrances and industrial panels, with a neutral or ground lug kit installed. It uses #14-2 AWG Cu/Al conductors across three wires, making it suitable for standard feeder connections as well as service-disconnect arrangements in harsh environments.
The device provides a 30A amperage rating, 240V voltage rating, and three-pole, three-wire configuration. It employs a Class H fuse with fusible without neutral configuration, enabling reliable protection for motor circuits and load switches in demanding applications.
Ideal for industrial panels, conveyors, pumps, and heavy machinery operating in harsh or washdown environments. The 304 stainless steel enclosure and NEMA 4X protection make it well-suited for food processing, manufacturing, and packaging lines where corrosion resistance and reliable isolation are critical.
The DH321FWK is UL Listed, providing recognized safety certification for electrical components. Its NEMA 4X stainless enclosure further supports compliance with environmental protection standards, while service-entrance compatibility with lug kits simplifies code-conforming installation in industrial facilities.
The switch offers robust reliability with a corrosion-resistant enclosure and proven protection, contributing to reduced downtime. It carries a one-year warranty (or eighteen months from shipment per Eaton policy) and supports straightforward field terminations, which lowers maintenance effort and long-term operating costs.