Eaton DH221FWKW Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH221FWKW
Quick Summary
Eaton heavy duty fusible safety switch provides safe disconnection for industrial equipment and control panels. This robust device helps prevent arc flash risks and unplanned downtime by isolating power quickly and reliably. It carries UL Listed certification and a NEMA 4X enclosure, offering corrosion and washdown resistance for harsh environments, with a KRYDON non-metallic body for durable service. Designed for two-pole, three-wire 240 V circuits, it handles up to 30 A and up to 5 hp on three-phase configurations, while Fusible without neutral simplifies wiring and maintenance. The combination of rugged construction and clear window visibility supports fast status checks, enabling safer maintenance windows and improved workforce productivity. The business value is clear: safety, reliability, and uptime.
Product Information
Extended Description
DH221FWKW Eaton: Eaton Heavy duty single-throw fused safety switch, 30 A, NEMA 4X, Non-metallic, KRYDON, Class H, Fusible without 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
DH221FWKW
UPC
786680181405
Product Length/Depth
10.22 in
Product Height
17.75 in
Product Width
7.73 in
Product Weight
32 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
Heavy Duty Safety Switch (HDSS). Window & Visible Blade
Enclosure
NEMA 4X
Enclosure material
Non-metallic, KRYDON
Fuse class provision
Class H
Fuse configuration
Fusible without 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 - max
600 V
Voltage rating
240V
Application
Heavy commercial and industrial
Series
K
Eaton Specification Sheet - DH221FWKW
Selling Policy 25-000 - Distribution and Control Products and Services
NEMA 4X enclosure with KRYDON non-metallic body delivers corrosion and washdown resistance for outdoor and demanding industrial environments, reducing maintenance frequency and extending service life. Feature → Business Impact → Application: rugged enclosure improves outdoor usability in warehouses, plants, and harsh outdoor installations, lowering total cost of ownership by mitigating environmental damage and downtime. Fusible without neutral simplifies wiring, reduces material costs, and speeds installation in 240 V three-wire circuits for conveyors, pumps, and fans. Feature → Business Impact → Application: Class H fuse protection provides reliable overcurrent protection, minimizing nuisance trips while meeting motor-load requirements for 1.5, 3, 7.5, and 5 hp ratings on 1-3 phase systems. Feature → Business Impact → Application: two-pole design aligns with standard control wiring, streamlining panel integration and reducing wiring errors. Window and visible blade allow quick status checks, supporting safer maintenance and faster fault isolation. The UL Listed certification reinforces compliance with electrical codes, while the 30 A rating equips this unit for common industrial loads without overdesign. Warranty support (one year from installation or 18 months from shipment) adds predictable service expectations for OEMs and integrators. This combination fosters measurable efficiency gains, improved uptime, and predictable maintenance costs for heavy commercial and industrial applications.
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FAQs
For reliable operation in dusty environments, ensure proper enclosure sealing and adequate clearance for ventilation. Mount the unit in a protected location with unobstructed access to the window for quick status checks. Use appropriate conduit fittings and sealed connections to maintain the NEMA 4X integrity, and verify the fusible configuration matches the intended 240V three-wire circuit.
The DH221FWKW provides 30A protection with a two-pole, three-wire configuration and fusible without neutral, using Class H fuses. This combination supports 1.5, 3, and up to 5 hp ratings on 1-3PH at 250 Vdc, delivering reliable overcurrent protection while simplifying motor protection and reducing nuisance trips in motors, pumps, and conveyors.
Yes, the unit is UL Listed and features a NEMA 4X enclosure, suitable for heavy commercial and industrial environments. It is ideal for outdoor or washdown areas, service entrances for 240V motor loads, and control panels in manufacturing, processing, and packaging lines where rugged protection and clear status visibility are required.
Fuse replacements should follow the manufacturer’s UL guidelines. Use Class H fuses compatible with the 30A rating and HP range specified for the load. Periodic inspection of the window and blade visibility is recommended to confirm status, and stock recommended fuse types for quick swap-outs to minimize downtime during maintenance windows.
Engineers can expect reduced downtime due to reliable protection and quicker fault isolation via the windowed blade, simpler wiring with fusible without neutral, and longer service life from the rugged KRYDON enclosure. UL Listed assurance plus a 1-year warranty (or 18 months from shipment) provides predictable maintenance costs and a clear path to faster project completion.