Eaton DH325FWKV Heavy Duty Fusible Safety Switch - NEMA 4X
Part Number: DH325FWKV
Quick Summary
Eaton DH325FWKV heavy duty fusible safety switch provides rugged main disconnect protection for industrial feeders at 240 V. Engineers often struggle with corrosion, downtime, and unsafe access in outdoor or washdown environments. UL Listed, NEC 230.62 compliant barrier, and a corrosion‑resistant NEMA 4X stainless enclosure help meet safety codes and uptime. This model delivers up to 400 A and four essential service life features, enabling reliable operation, fast maintenance, and scalable protection for motor loads. By aligning high amperage capability with a compact footprint, it supports efficient installation and predictable total cost of ownership. For OEMs and integrators, it offers straightforward wiring, robust compatibility with Cu/Al conductors, and a durable enclosure suitable for demanding environments.
Product Information
Extended Description
DH325FWKV Eaton: Eaton Heavy duty single-throw fused safety switch, Corrosion resistant, enhanced visible blade, 400 A, NEMA 4X, Three-pole, Three-wire, 240 V, Max Hp: 50, 125/ 50 hp (3PH @Std, TD/250 Vdc), (2)#1/0-(2)300 kcmil or (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH325FWKV
UPC
786685972626
Product Length/Depth
64.5 in
Product Height
13 in
Product Width
26 in
Product Weight
133 lb
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Catalog Notes
Heavy Duty Safety Switch (HDSS)
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Fuse class provision
Class H
Fuse configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Heavy duty fusible safety switch
Amperage Rating
400A
HP rating - max
50, 125/ 50 hp (3PH @Std, TD/250 Vdc)
NEMA rating
NEMA 4X (Stainless)
Voltage rating
240V
Feature: 400 A amperage rating with three-pole, three-wire configuration at 240 V (Max HP: up to 50 HP standard; 125/50 HP at 250 Vdc for TD). Business Impact: Supports heavy motor loads without the need for paralleling smaller disconnects, reducing wiring complexity and potential fault paths. Application: Ideal as a main disconnect in manufacturing lines and heavy-duty conveyor systems. Feature: NEMA 4X enclosure in 304 stainless steel provides superior corrosion resistance. Business Impact: Extends service life in outdoor and washdown settings, lowering maintenance frequency and replacement costs. Application: Outdoor substations, food & beverage facilities, and chemical processing plants. Feature: Fusible configuration without neutral and Class H fuse provision delivers fast fault clearing with industry-standard replacement options. Business Impact: Improves safety margins while simplifying spare parts planning and downtime reduction. Application: Large motor feeders and critical load circuits. Feature: Enhanced visible blade and robust wiring options for Cu/Al conductors. Business Impact: Quick visual status checks improve maintenance efficiency and reduce commissioning errors. Application: New builds and retrofit projects where rapid, reliable disconnection matters. Feature: Overall dimensions and weight (64.5 in length, 26 in width, 13 in height; 133 lb) support predictable room planning and retrofit fit. Business Impact: Streamlined installation, reduced scheduling risk, and easier handling during site setup. Application: OEM panel assemblies, MCCs, and industrial control rooms. Feature: UL Listed and NEC 230.62 barrier conformance ensure compliance with safety standards. Business Impact: Facilitates regulatory approval, audits, and safer operation across facilities. Application: Facilities with strict safety and electrical codes, including manufacturing plants and distribution centers.
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FAQs
The DH325FWKV is a three-pole, fusible disconnect rated at 400 A and 240 V, designed to integrate with standard three-wire feeders. Plan for Cu/Al conductor sizing up to 750 kcmil Cu or 750 kcmil Al per the catalog. Ensure the enclosure is mounted in a compliant location, secure the fuses (Class H), and connect conductors to the appropriate terminals. Verify the enhanced visible blade status for quick verification and maintain a clear working space around the unit to meet NEC requirements. Use UL Listed components and follow Eaton’s installation instructions for safe, code-compliant commissioning.
Key specs include a 400 A amperage rating, 240 V voltage, three-pole, three-wire configuration, and the max horsepower ratings of 50 HP (standard) and 125/50 HP at 250 Vdc for TD. The unit uses fusible protection (Class H) without a neutral and provides a NEMA 4X stainless steel enclosure for corrosion resistance. Confirm the device is UL Listed, and ensure you have compatible fuses and conductors sized to the listed terminals. Check the 64.5 in length, 26 in width, and 13 in height to fit existing enclosures or MCC layouts.
Yes. The DH325FWKV features a NEMA 4X enclosure constructed from 304 stainless steel, delivering excellent corrosion resistance in outdoor and washdown environments. This makes it well-suited for facilities like food & beverage, chemical processing, and other harsh environments where reliable isolation and protection are critical. Its UL Listed status and NEC barrier compliance further support safe operation in industrial applications requiring robust enclosure protection and code-compliant installation.
The DH325FWKV is UL Listed and features NEC 230.62 compliant barrier construction, plus a NEMA 4X rating for corrosion protection in challenging environments. The unit uses Class H fuses and fusible without neutral configuration, aligning with typical motor control and safety requirements in industrial settings. These certifications simplify regulatory audits and support safe integration into code-compliant electrical installations.
The switch’s robust corrosion resistance, long service life of heavy-duty components, and straightforward wiring reduce downtime and parts replacement costs. Its enhanced visibility blade simplifies status checks during routine maintenance, while the compact footprint eases retrofit and ongoing servicing in existing MCCs. Overall, the unit provides predictable maintenance intervals, improved safety, and lower total cost of ownership for high-demand motor control applications.