Eaton DH424FDKV Fusible Safety Switch - NEMA 12/3R
Part Number: DH424FDKV
Quick Summary
Eaton DH424FDKV heavy duty fusible safety switch protects heavy industrial power circuits in harsh environments. When maintenance windows are tight, you need reliable isolation, enhanced blade visibility, and fast, safe disconnection to minimize downtime. UL Listed safety certification confirms electrical safety compliance, and the NEMA 12/3R enclosure delivers dust and moisture protection in rugged locations. Engineered for 200 A service with 240 V control and up to 600 V max, this four-pole, cartridge-fuse switch supports heavy commercial and industrial applications, offering dependable reliability, streamlined installation, and reduced energy and maintenance costs through optimized protection and clear status visibility. Its four-wire configuration and enhanced visible blades help technicians verify operation at a glance during commissioning.
Product Information
Extended Description
DH424FDKV Eaton: Eaton Heavy duty single-throw fused safety switch, Enhanced visible blades, 4 blade, 200 A, NEMA 12/3R, Cartridge, Four-pole, Four-wire, 240 V, Max Hp: 30, 25/ 50, 60/ 40 hp (1,3PH @Std/TD/250 Vdc), 600 V, #6-300 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH424FDKV
UPC
786680182259
Product Length/Depth
37.5 in
Product Height
11.5 in
Product Width
19 in
Product Weight
58 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
Enhanced Visible-Blade (No Window)
Enclosure
NEMA 12, NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Cartridge
Fuse configuration
Fusible without neutral
Number Of Poles
Four-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
200A
HP rating - max
30, 25/ 50, 60/ 40 hp (1,3PH @Std/TD/250 Vdc)
NEMA rating
NEMA 12/3R
Voltage - max
600 V
Voltage rating
240V
Application
Heavy commercial and industrial
Series
K
Eaton Specification Sheet - DH424FDKV
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The 200 A amperage rating with a four-pole, four-wire configuration enables safe isolation of large industrial loads, reducing panel crowding and improving protection for critical machines. This arrangement delivers faster fault clearance and easier integration with existing switchgear, supporting reliable operation in machining centers and processing lines. Feature → Business Impact → Application: Enhanced enclosure rating and construction with NEMA 12, NEMA 3R, painted galvanized steel provides dust and moisture protection in indoor and outdoor environments, extending service life and reducing maintenance costs. Use this when the switch is mounted in harsh factory floors, washdown areas, or outdoor installations where reliability matters. Feature → Business Impact → Application: Cartridge fuse provision with fusible without neutral simplifies maintenance and improves safety during fuse replacement, reducing downtime and prolonging switchgear life in high-load, fault-prone settings. Feature → Business Impact → Application: Enhanced Visible-Blade (No Window) status indication enables quick visual confirmation of switch position, accelerating lockout/tagout procedures and boosting worker safety during commissioning and routine checks. Feature → Business Impact → Application: The 240 V control voltage and 600 V maximum rating support diverse control circuits and motor drives, enabling straightforward integration with existing control panels and minimizing wiring changes during retrofits. Feature → Business Impact → Application: Dimensions of 37.5 in depth, 11.5 in height, and 19 in width with a 58 lb weight offer manageable installation in crowded electrical rooms and retrofit projects, enabling easier transport, mounting, and alignment with nearby equipment.
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FAQs
Yes. The DH424FDKV is a four-pole, four-wire switch designed for 240 V control circuits and up to 600 V maximum. It accepts cartridge fuses and supports Cu/Al conductors from #6 to #300 kcmil. Proper installation requires securing the four-pole enclosure in a suitable NEMA-rated space and wiring to the control circuit per the Eaton spec sheet.
The unit is rated for 200 A continuous and provides HP ratings of up to 30 HP (standard) and 25/50 HP or 60/40 HP for certain 1-phase arrangements under specific TD conditions at 250 VDC. Use these ratings to size protective time delays and ensure compatibility with connected motors and drives.
Ideal for heavy commercial and industrial environments such as machine centers, processing lines, and integration with industrial control panels. The NEMA 12/3R enclosure, rugged galvanized steel, and UL Listed certification make it suitable for indoor industrial spaces and washdown-adjacent facilities where reliable isolation and clear status indication are critical.
The DH424FDKV is UL Listed, guaranteeing electrical safety compliance for industrial installations. Its NEMA 12/3R enclosure rating provides environmental protection against dust and moisture in typical factory settings. Always verify local regulatory requirements and ensure compatibility with your control system and panel construction.
Eaton provides a warranty per Selling Policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. Routine maintenance includes checking fuse cartridges, blade visibility, and enclosure integrity to sustain protection performance and minimize downtime in demanding operations.