Eaton DH221NWK Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH221NWK
Quick Summary
Eaton heavy duty fusible safety switch provides reliable motor protection in harsh industrial environments. Many facilities battle corrosion and environmental exposure leading to costly downtime; this unit’s 304 stainless steel, NEMA 4X enclosure, and fusion protection mitigate that risk. UL Listed for safety and performance, this switch features a corrosion-resistant enclosure and built-in fuse protection to meet demanding OEM specs. Designed for 240 V operation with two-pole neutral wiring, it streamlines panel layouts and reduces maintenance, delivering lower total cost of ownership for commercial and industrial automation cabinets.
Product Information
Extended Description
DH221NWK Eaton: Eaton Heavy duty single-throw fused safety switch, Corrosion resistant, 30 A, NEMA 4X, Grade 304 stainless steel, neutral, Two-pole, Three-wire, 240 V, Max Hp: 1.5, 3 hp/3, 7.5 hp/5 hp (1,3PH @ Std fuse/time delay/250 Vdc), #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH221NWK
UPC
782113205403
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.
Certifications
UL Listed
Catalog Notes
3-Phase hp ratings shown are grounded B phase ratings; UL listed
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Fuse class provision
Class H
Fuse configuration
Fusible with neutral
Number Of Poles
Two-pole
Number of wires
3
Type
Heavy duty fusible safety switch
Amperage Rating
30A
HP rating - max
1.5, 3 hp/3, 7.5 hp/5 hp (1,3PH @ Std fuse/time delay/250 Vdc)
NEMA rating
NEMA 4X (Stainless)
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature: Corrosion-resistant enclosure (304 stainless steel) and NEMA 4X protection. Benefit: Durable protection against washdowns and outdoor exposure, reducing corrosion-related failures and maintenance. Application: Suitable for washdown areas, outdoor installations, and corrosive environments in manufacturing lines. Feature: Fusible with neutral using Class H fuses. Benefit: Safe disconnection and coordinated protection for 3-wire motor circuits, improving equipment uptime. Application: Motor control in conveyors and packaging lines where neutral reference is required. Feature: 30 A at 240 V with HP ratings up to 7.5 hp (1-3PH with standard fuse/time delay at 250 Vdc). Benefit: Efficient motor protection across a range of small to mid-size drives, enabling compact control panels. Application: Light- to medium-load drives on automation cells and line equipment. Feature: UL Listed and NEMA 4X rating. Benefit: Compliance reassurance and robust environmental protection, reducing qualification time for OEMs. Application: Industries with strict safety standards and washdown requirements, such as food processing and chemical handling. Feature: Dimensions and weight (20 in L × 9.5 in W × 8.5 in H; 21 lb). Benefit: Panel-ready footprint that simplifies installation, retrofits, and service access. Application: Retrofit projects and new installations in space-conscious control panels.
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FAQs
For panel installations, the DH221NWK offers a two-pole design with neutral and three-wire wiring, rated at 240 V and 30 A. Its 20 in length, 9.5 in width, and 8.5 in height, along with a 21 lb weight, make it panel-ready and easy to retrofit into standard control cabinets. Ensure mounting within a NEMA 4X-rated enclosure to maintain corrosion protection and UL compliance.
The DH221NWK provides HP ratings up to 7.5 hp (1-3 phase) with standard fuse and time-delay at 250 Vdc. This enables reliable protection for a range of small to mid-size motors on 240 V systems, while preserving safe disconnect capability and coordinated motor protection within a compact, fusible switch configuration.
Yes. The unit employs a 304 stainless steel enclosure with NEMA 4X protection, delivering corrosion resistance and ingress protection suitable for washdown areas and outdoor installations. This makes it well-suited for manufacturing floors, food processing, chemical handling, and other environments where moisture and cleaning processes are common.
The DH221NWK is UL Listed, which confirms it meets recognized safety standards for electrical protection devices. Its NEMA 4X-rated enclosure adds environmental protection for corrosion and washdown exposures. Together, these certifications support regulatory compliance, safer operation, and smoother OEM qualification processes.
By combining a corrosion-resistant stainless enclosure, UL listing, and a robust fusible with neutral design, the DH221NWK reduces maintenance frequency and downtime due to environmental degradation. The durable construction extends service life, while straightforward wiring and panel compatibility shorten installation time, delivering lower total cost of ownership over the motor protection lifecycle.