Eaton DH365FRK Heavy Duty Fusible Safety Switch - NEMA 3R
Part Number: DH365FRK
Quick Summary
Eaton DH365FRK heavy duty fusible safety switch provides reliable power isolation for industrial equipment and control panels. This rugged, UL Listed device is designed to minimize arc-flash risk and downtime in demanding environments. Operators frequently battle unsafe switching, inconsistent enclosure protection, and limited service-entrance options; this switch addresses those pain points with a robust NEMA 3R enclosure and Class H fuse protection. Built for three-pole, three-wire systems at 600 V, it supports high hp motors up to 350 hp and accommodates large conductors. By pairing with a Neutral Kit when needed, it delivers flexible service-entrance capability while simplifying maintenance and compliance for critical automation applications.
Product Information
Extended Description
DH365FRK Eaton: Eaton Enhanced visible blade single-throw safety switch, 400 A, NEMA 3R, Painted galvanized steel, Class H, Three-pole, Three-wire, 600 V, Max Hp: 250, 350 hp (3PH @480/600 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
DH365FRK
UPC
782113207216
Product Length/Depth
45.5 in
Product Height
10.25 in
Product Width
24.38 in
Product Weight
105.8 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
Suitable for service entrance use with a Neutral Kit installed
Enclosure
NEMA 3R
Enclosure material
Painted galvanized 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
250, 350 hp (3PH @480/600 V)
NEMA rating
NEMA 3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible without neutral
Feature: Heavy duty fusible safety switch design delivers robust power isolation for demanding industrial environments. Business Impact: Reduces risk of arc-flash events and unplanned downtime while meeting heavy-load motor protection needs. Application: Ideal for service entrances and motor control in manufacturing lines that require dependable disconnects and clear safety margins. Feature: Three-pole, three-wire configuration with Class H fuse provision provides reliable overload protection. Business Impact: Protects motors up to 350 hp at 480/600 V, minimizes nuisance tripping, and supports compliant startup sequences. Application: Suitable for large industrial drives and conveyor systems where precise fuse coordination matters. Feature: Painted galvanized steel enclosure with NEMA 3R rating offers corrosion resistance and weather protection. Business Impact: Extends lifecycle in outdoor or harsh interior environments, reducing maintenance costs. Application: Exterior switchgear housings and service entrances in harsh facilities like metal shops or food processing plants. Feature: Fuse configuration Fusible without neutral, with optional Neutral Kit for service entrance use. Business Impact: Delivers installation flexibility while aligning with varying electrical codes and field requirements. Application: Used in existing panels needing quick adaptation for service-entrance use plus future neutral implementation. Feature: UL Listed, 600 V rating, 400 A amperage with 250/350 hp ratings at 480/600 V. Business Impact: Ensures compliance, simplifies procurement, and supports scalable automation installs. Application: Motor control centers and equipment islands where standardized protection and high-current capability are essential.
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FAQs
The DH365FRK is a three-pole, three-wire switch rated for 600 V and 400 A, designed for straightforward replacement or panel expansion. Ensure enclosure is NEMA 3R, use proper lugs for the conductor sizes, and coordinate with Class H fuses. If a Neutral Kit is needed for service entrances, install it per Eaton’s guidance and verify UL Listed compliance during commissioning.
Key specs include 400 A amperage rating, 600 V voltage rating, NEMA 3R enclosure, Class H fuse provision, three-pole configuration, and fusible without neutral configuration. The unit supports up to 250–350 hp (3PH @480/600 V) and is UL Listed, making it suitable for demanding industrial motor protection and control applications.
Yes, the DH365FRK can be used for service entrance with a Neutral Kit installed. It provides robust isolation and fuse-based protection for service feeds, while the fusible without neutral configuration offers flexibility in field installations. Always verify local codes and NEC requirements when configuring service entrance protection.
The DH365FRK is UL Listed and features a NEMA 3R enclosure for outdoor or indoor use in harsh environments. It uses Class H fuses and is designed for 600 V systems across three poles. For service entrances, a Neutral Kit may be added to meet specific installation codes and standards.
With UL Listed protection and a durable galvanized steel enclosure, the DH365FRK reduces downtime and maintenance costs by providing reliable, long-term service in harsh environments. Its 1-year warranty (or 18 months from shipment) supports OEM reliability budgets, while its compatibility with Neutral Kit options minimizes future retrofits during capacity expansion.