Eaton DH221NCK Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH221NCK
Quick Summary
Eaton DH221NCK Heavy Duty Fusible Safety Switch provides reliable motor circuit protection for industrial control panels and standalone machinery. Too often, engineers contend with nuisance tripping, slow fault isolation, and complicated maintenance that erodes uptime. This unit carries UL Listed safety certification, NEC 230.62 compliant barrier, and a rugged NEMA 12/3R enclosure for demanding environments, along with a painted galvanized steel cabinet that withstands dust and moisture. By combining a two-pole, three-wire design with a Class H fuse and neutral, it delivers dependable protection while simplifying wiring and service. In addition, its 30 A rating and HP range compatibility support a broad array of motors in production lines, conveyors, and processing equipment, delivering both safety and cost efficiency for your facility.
Product Information
Extended Description
DH221NCK Eaton: Eaton Heavy duty single-throw fused safety switch, 30 A, NEMA 12/3R, Painted galvanized steel, Class H, Fusible with 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
DH221NCK
UPC
786685161877
Product Length/Depth
10.22 in
Product Height
17.75 in
Product Width
7.73 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 12, NEMA 3R
Enclosure material
Painted galvanized 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 (Non-Metallic)
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Amperage rating and HP range are matched to protect motor loads without oversizing, reducing energy waste and nuisance trips. This translates to improved uptime and lower maintenance costs for conveyors and processing equipment that run continuously. The two-pole, three-wire configuration with neutral simplifies wiring diagrams and enables straightforward field wiring, accelerating panel assembly and service. The Class H fuse and fusible-with-neutral design support selective coordination, improving fault isolation and minimizing collateral shutdowns in complex motor circuits. The NEMA 12/3R enclosure with painted galvanized steel offers rugged protection against dust, humidity, and incidental washdown, extending service life in demanding environments. UL Listed and NEC barrier compliance provide regulatory confidence, while the compact 30 A frame supports easy retrofit into existing control panels. Overall, installation is streamlined, and long-term operating costs are reduced through reliable protection and simplified maintenance.
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FAQs
The DH221NCK is designed for 240V systems and 1- or 3-phase motor loads. It utilizes a two-pole, three-wire configuration with neutral, accepts conductors from #14 to #2 AWG, and supports standard fuse time-delay characteristics. This makes it a straightforward, code-compliant choice for motor protection within existing or new control panels.
Key specs include a 30A amperage rating, 240V voltage rating, two-pole/three-wire configuration, fusible with neutral Class H fuses, NEMA 12/3R enclosure, and a UL Listed safety certification. HP ratings extend from 1.5 to 7.5 hp depending on configuration and phase, enabling flexible motor protection across diverse applications.
Yes. The device is UL Listed for safety, and it features NEC 230.62 (C) compliant barrier design, providing regulatory-friendly protection. It also employs a NEMA 12/3R enclosure to meet environmental protection expectations in typical industrial settings, supporting safe operation and easy compliance audits.
Dimensions are 10.22 in (length/depth) by 7.73 in (width) and 17.75 in (height). Its NEMA 12, NEMA 3R enclosure, painted galvanized steel construction, and compact footprint support straightforward installation in standard electrical cabinets and on equipment frames, with predictable mounting hole patterns and clearances for wiring.
Warranty terms follow Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This coverage supports factory-supported replacements, technical assistance, and reliable availability of replacement parts, helping minimize downtime and ensuring continued protection for critical motor circuits.