Eaton DH321FWK316 Fusible Safety Switch - 4X

Part Number: DH321FWK316
Manufacturer
Eaton
Part number
DH321FWK316

Quick Summary

Eaton DH321FWK316 Fusible Safety Switch provides heavy-duty circuit protection for motor and power distribution applications. In harsh industrial environments, users often struggle with corrosion, moisture ingress, and unreliable overload protection. UL Listed and a NEMA 4X stainless steel enclosure with Class H fuse provisions address safety, longevity, and regulatory compliance. This model combines rugged construction with simple installation, helping facilities reduce downtime and maintenance costs while meeting NEC requirements. For OEMs and maintenance teams, the 3-pole design and 240V rating support efficient motor control in food and beverage, chemical, and general manufacturing settings.

Product Information

Extended Description

DH321FWK316 Eaton: Eaton Heavy duty single-throw fused safety switch, 30 A, NEMA 4X, Grade 316 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
DH321FWK316
UPC
782116489824
Product Length/Depth
20 in
Product Height
8.5 in
Product Width
9.5 in
Product Weight
21 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 4X
Enclosure material
316 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
316 stainless steel construction and a NEMA 4X enclosure provide exceptional corrosion resistance in washdown and outdoor environments. This translates to extended service life, reduced maintenance frequency, and fewer unplanned outages for critical lines. Ideal for food processing, beverage, chemical processing, and other harsh industrial settings, the DH321FWK316 protects personnel and equipment while preserving electrical integrity. The fuse class provision is Class H and the unit is fusible without neutral, improving overload protection without complicating control wiring. This design reduces nuisance trips and simplifies field wiring, helping maintenance teams complete installations faster and with fewer errors. Suitable for three-phase motor circuits in manufacturing lines and packaging lines where uptime matters. With a three-pole, three-wire configuration, the switch provides straightforward wiring and dependable three-phase control. The 240V rating and a 30A amperage rating align with common motor starter requirements, delivering predictable performance and facilitating compliance with electrical codes. This makes it a practical drop-in replacement for aging protective switches in retrofit projects. HP ratings up to 7.5/5 hp (1/3PH at Std/TD, 250 Vdc) allow efficient motor management across a range of loads, while the enclosure maintains safe access to fuses and wiring. The UL Listed certification adds confidence in safety and reliability, and NEC 230.62 compliance supports barrier protection in commercial and industrial installations. Rugged construction is paired with practical installation dimensions: 20 in depth, 9.5 in width, 8.5 in height, and a 21 lb weight, enabling compact integration in crowded electrical rooms. The unit ships with a strong warranty and Eaton support, helping minimize lifecycle costs and streamline maintenance programs.

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FAQs

The DH321FWK316 is designed for heavy-duty motor control and power distribution in harsh, washdown capable settings. Its 316 stainless steel, NEMA 4X enclosure stands up to corrosive atmospheres found in food and beverage processing, chemical plants, and outdoor installations, while maintaining safe access and reliable protection.
Yes. It is a three-pole, three-wire fusible safety switch rated at 30A and 240V, with fuse configuration Fusible without neutral. Use #14-2 AWG copper or aluminum conductors per terminations and connect to standard 240V three-phase motor circuits.
This model is UL Listed, with NEC 230.62 barrier compliance, and a NEMA 4X enclosure in 316 stainless steel, ensuring corrosion resistance and safe operation in demanding environments.
Warranty is Eaton Selling Policy 25-000, one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, rely on the rugged 316 stainless enclosure and Class H fuses to minimize downtime and simplify parts replacement.
Dimensions are 20 in depth, 8.5 in height, and 9.5 in width, with a product weight of 21 lb. Plan for proper clearance around the enclosure for safe wiring, fuse access, and replacement, especially in tight electrical rooms or outdoor installations.