Eaton DH425FGK Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH425FGK
Quick Summary
Eaton DH425FGK heavy duty fusible safety switch protects electrical feeders in industrial power distribution and control panels. Maintenance teams often struggle with safe disconnection and equipment downtime during servicing. UL Listed protection and NEMA 1 enclosure reliability help ensure compliance, while the Class H fuse and four-pole design support robust motor protection. From panel builders to maintenance crews, this switch delivers dependable performance, fast fault isolation, and scalable protection for indoor electrical systems. It supports 400A ratings, 240V operation, and 50 HP ranges, helping engineers optimize uptime and safety across plant floors. Designed for indoor use in dry environments, its painted steel enclosure minimizes corrosion and simplifies integration with existing Eaton catalogs.
Product Information
Extended Description
DH425FGK Eaton: Eaton Enhanced visible blade single-throw safety switch, 400 A, NEMA 1, Class H, Four-pole, Four-wire, 240 V, Max Hp: 50, 50/ 125/50 hp (1,3PH @Std/3PH @TD/250 Vdc), 600 V, (2)#1/0-(2)300 kcmil; or (1)#1/0-(1)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH425FGK
UPC
782113952192
Product Length/Depth
45.5 in
Product Height
10.25 in
Product Width
24.38 in
Product Weight
116 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
Enclosure
NEMA 1
Enclosure material
Painted 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
400A
HP rating - max
50, 50/ 125/50 hp (1,3PH @Std/3PH @TD/250 Vdc)
NEMA rating
NEMA 1
Voltage - max
600 V
Voltage rating
240V
Product Category
Heavy Duty, Fusible without neutral
Feature: 400A amperage rating with 240V operation and a 600V maximum. Business impact: reliable protection for large motor feeders reduces unplanned downtime and extends equipment life. Application: suitable for manufacturing lines and pumps in industrial facilities. How it helps: supports up to 50 HP loads (single and three-phase) with predictable protection and fast isolation. Feature: Four-pole, four-wire fusible configuration with Class H fuse provision. Business impact: ensures complete isolation of all conductors, improving safety during maintenance and compliance with lockout procedures. Application: ideal for motor control centers and feeders in harsh environments. Feature: NEMA 1 painted steel enclosure and UL Listed certification. Business impact: rugged indoor protection, easy surface mounting, and straightforward procurement with established Eaton standards. Application: aligns with routine panel upgrades and retrofits. Feature: Fusible without neutral design and large conductor compatibility (#1/0–750 kcmil Al). Business impact: enables scalable wiring for high-capacity feeders, reducing a second part number and installation time. Application: preferred for high-current motor feeds in process industries. Feature: Enhanced visible blade design for quick status verification. Business impact: reduces maintenance risk by enabling rapid fault identification and safer operator interaction. Application: common in high-availability production lines and critical control panels.
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FAQs
Yes. The DH425FGK is designed as a four-pole, four-wire, fusible safety switch with a NEMA 1 enclosure, intended for indoor use in standard Eaton panel ecosystems. Ensure sufficient clearance for the 45.5 in length and 24.38 in width, and follow the provided wiring guidelines for conductor sizes from #1/0 to 750 kcmil Al. Refer to the datasheet for installation torque values and torque sequences.
Key ratings include 400A amperage, 240V nominal voltage with a 600V maximum, and HP protection up to 50 HP (1-phase and 3-phase variants). The switch is Class H fuse-provisioned and UL Listed, providing reliable disconnection and short-circuit protection for large motor feeders while complying with common industrial safety standards.
Ideal for manufacturing lines, pumps, conveyors, and other motor-driven processes in process and discrete manufacturing. It supports indoor, dry environments and is well-suited for control panels and motor control centers requiring high-current protection, visible disconnection, and straightforward retrofit into existing Eaton-based protection schemes.
The DH425FGK carries UL Listed certification and uses a NEMA 1 enclosure, suitable for indoor, dry environments. This combination supports compliance with many safety and electrical installation standards and simplifies approval processes for new installations or upgrades in regulated facilities.
The unit carries a one-year warranty or 18 months from shipment, whichever occurs first, and leverages Eaton’s documented installation and maintenance practices. By delivering reliable protection, visible status indicators, and easier commissioning, it reduces unplanned downtime and extends equipment life, driving measurable return on investment in critical power distribution projects.