Eaton DH321NWKX Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH321NWKX
Quick Summary
Eaton DH321NWKX Heavy Duty Fusible Safety Switch provides reliable circuit protection for harsh industrial plants and machine enclosures. The rugged design helps minimize unscheduled downtime by resisting corrosion and contamination in demanding environments. UL Listed and NEC 230.62 barrier-compliant, with a NEMA 4X EnviroLine stainless enclosure, this switch meets high safety and reliability standards. The unit is a three-pole, four-wire device rated at 240 V and 30 A, with a Class H fuse provision and neutral, supporting efficient, code-compliant power distribution. For OEMs and maintenance teams, this translates to faster installation, fewer field failures, and lower total cost of ownership while maintaining regulatory compliance.
Product Information
Extended Description
DH321NWKX Eaton: Eaton Heavy duty single-throw fused safety switch, Corrosion resistant, 30 A, NEMA 4X, EnviroLine stainless, Class H, Fusible with neutral, Three-pole, Four-wire, 240 V, Max Hp: 3, 7.5 hp (3PH @Std, TD), #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH321NWKX
UPC
782114224083
Product Length/Depth
10.22 in
Product Height
19.08 in
Product Width
7.73 in
Product Weight
22 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
EnviroLine stainless
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
#14-2 AWG Cu/Al
Amperage Rating
30A
HP rating - max
3, 7.5 hp (3PH @Std, TD)
NEMA rating
NEMA 4X (Stainless)
Voltage rating
240V
Product Category
Heavy Duty, Harsh Environment - EnviroLine
Feature → Business Impact → Application: EnviroLine stainless enclosure provides exceptional corrosion resistance in washdown and outdoor environments, extending service life and reducing maintenance labor; ideal for food processing, chemical handling, and outdoor equipment where harsh conditions are common. Feature → Business Impact → Application: 3-pole, 4-wire configuration with 240 V and 30 A rating delivers reliable motor control and overload protection for small to medium equipment fleets, enabling consistent uptime in manufacturing lines and packaging systems. Feature → Business Impact → Application: Class H fuse provision with fusible neutral ensures safe, code-aligned interruption during faults, cutting downtime and protecting downstream electronics in conveyors and packaging machines. Feature → Business Impact → Application: Copper/ aluminum (#14-2 AWG) wire compatibility simplifies field wiring and reduces termination errors, accelerating installation and servicing in retrofits or new builds. Feature → Business Impact → Application: UL Listed with NEC 230.62 barrier compliance provides regulatory assurance and faster inspections, lowering project risk for industrial installs and OEM integrations. Feature → Business Impact → Application: Compact footprint (19.08 in H x 7.73 in W x 10.22 in D) and manageable 22 lb weight enable easier mounting in crowded electrical rooms or control panels, reducing installation time and labor costs.
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FAQs
Yes. DH321NWKX is a three-pole, four-wire switch rated for 240V. It uses #14-2 AWG Cu/Al wiring, features a fusible with neutral configuration, and is designed for straightforward panel integration in standard control circuits.
DH321NWKX is UL Listed and NEC 230.62 barrier compliant. It also features a NEMA 4X EnviroLine stainless enclosure, providing proven protection in corrosive or washdown environments and meeting critical safety and regulatory requirements.
The switch provides a 30A rating at 240V with a maximum of 3 HP (7.5 HP for 3-phase standard torque drive, TD). This makes it suitable for small to mid-size motors and related equipment in industrial applications.
Warranty is 1 year from installation or 18 months from shipment, whichever occurs first. The corrosion-resistant EnviroLine stainless enclosure reduces maintenance needs, while UL listing supports dependable performance and easier ongoing compliance checks.
The EnviroLine stainless enclosure and robust Class H fusible protection minimize field failures and downtime. Combined with easy wiring, compact size, and code compliance, DH321NWKX lowers maintenance labor, accelerates installations, and extends service life in demanding facilities.