Eaton DH422FDK Heavy Duty Fusible Safety Switch - NEMA 12/3R
Part Number: DH422FDK
Quick Summary
The Eaton DH422FDK heavy duty fusible safety switch protects and isolates motor circuits in harsh industrial environments. It helps engineers overcome field wiring challenges, weatherproofing requirements, and strict code compliance by offering a rugged, ready-to-install solution. With UL Listing and a NEMA 12/3R enclosure, plus Class H fuse protection, this switch delivers dependable safety in dusty or wet plant areas. The four-pole, four-wire design supports 240 V control circuits and a 600 V maximum rating, enabling flexible motor configurations. The 60 A rating aligns with mid-size industrial motors, while the compact footprint simplifies panel integration. This reduces commissioning time and lowers lifecycle costs for maintenance teams and engineers.
Product Information
Extended Description
DH422FDK Eaton: Eaton Enhanced visible blade single-throw safety switch, 60 A, NEMA 12/3R, Painted galvanized steel, Class H, Fusible without neutral, Four-pole, Four-wire, 240 V, Max Hp: 7.5, 7.5/ 20, 15 /10 hp (1,3PH @Std/TD/250 Vdc), 600 V, #14-#2 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH422FDK
UPC
782113205946
Product Length/Depth
25.5 in
Product Height
9 in
Product Width
13.25 in
Product Weight
40 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
Can be field modified to meetNEMA 3R rainproof requirements when a factory provided drain hole is opened
Enclosure
NEMA 12, NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class H
Fuse configuration
Fusible without neutral
Number Of Poles
Four-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
60A
HP rating - max
7.5, 7.5/ 20, 15 /10 hp (1,3PH @Std/TD/250 Vdc)
NEMA rating
NEMA 12/3R
Voltage - max
600 V
Voltage rating
240V
Product Category
Heavy Duty, Fusible without neutral
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DH422FDK
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: NEMA 12 and NEMA 3R enclosure options with painted galvanized steel provide robust protection against dust, moisture, and corrosion. Business Impact: Reduces maintenance costs and extends service life in harsh environments, improving uptime. Application: Ideal for outdoor installations or wash-down areas such as conveyors, pumps, and heavy machinery in manufacturing lines. Feature: 60 A amperage rating with 240 V control and 600 V maximum voltage, four-pole, four-wire configuration. Business Impact: Enables safe, reliable motor switching for mid-size drives while accommodating standard plant voltages, reducing wiring complexity. Application: Used on mid-size motors in packaging, material handling, and process equipment. Feature: Fusible without neutral with Class H fuse provision. Business Impact: Delivers selective protection and faster fault clearing, lowering energy waste and damage risk. Application: Critical motor circuits requiring robust fuse coordination across phases. Feature: Field modification capability to meet NEMA 3R rainproof requirements by opening a drain hole. Business Impact: Offers install-time weatherproof compliance without special orders, shortening project timelines. Application: Outdoor or semi-exposed areas where occasional precipitation occurs. Feature: UL Listed certification and Eaton warranty policy. Business Impact: Ensures regulatory alignment and reliable post-sale support, reducing risk and total cost of ownership. Application: Industrial automation deployments that demand certified safety components and clear service terms.
Get a Quick Quote for a Eaton DH422FDK
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton DH422FDK?
Enquire Now
FAQs
The DH422FDK uses a NEMA 12 / NEMA 3R enclosure with painted galvanized steel, providing dust and moisture resistance for indoor, outdoor, and wash-down environments. This makes it appropriate for conveyors, pumps, and packaging lines where environmental exposure is a concern.
Class H fuses with fusible without neutral configuration offer high interrupting capacity and precise coordination for motor circuits. This minimizes nuisance outages while protecting conductors and equipment from short circuits or overloads, improving overall safety and reliability.
Yes. The DH422FDK is a four-pole, four-wire switch rated for 240 V control and up to 600 V, supporting a range of 1-phase and 3-phase motor configurations. It aligns with HP ratings up to 7.5–15 hp depending on the specific drive and voltage, enabling flexible integration.
It is UL Listed, ensuring compliance with recognized safety standards for electrical equipment. The product also carries NEMA 12/3R enclosure ratings, which define its dust, moisture, and corrosion resistance. These certifications support safer installations and smoother procurement for regulated projects.
Warranty is Eaton's Selling Policy 25-000, providing one year from installation or eighteen months from shipment, whichever occurs first. This, along with Eaton’s support resources and datasheets, helps minimize downtime and provides clarity on service terms for ongoing maintenance.