Eaton DH326NRK Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH326NRK
Quick Summary
Eaton DH326NRK heavy duty fusible safety switch provides robust fault isolation for 600 A, 240 V three-phase systems in industrial facilities. Owners and engineers often struggle with space constraints, lengthy lead times, and complex installation when upgrading protection schemes. UL Listed, NEC 230.62 compliant barrier, and a NEMA 3R enclosure ensure safety and regulatory readiness in harsh environments. This solution delivers reliable electrical protection with straightforward installation, supporting scalable motor control, panel protection, and maintenance workflows while reducing downtime and operational risk.
Product Information
Extended Description
DH326NRK Eaton: Eaton Heavy duty single-throw fused safety switch, 600 A, NEMA 3R, Painted galvanized steel, Class H, Neutral, Three-pole, Four-wire, 240 V, Max Hp: 75, 200 hp (3PH @Std, TD)), (1)#2-(1)600 kcmil and (1)#1/0-(1)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH326NRK
UPC
782113207421
Product Length/Depth
12.84 in
Product Height
51.83 in
Product Width
23.66 in
Product Weight
142 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.
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class H
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
600A
HP rating - max
75, 200 hp (3PH @Std, TD))
NEMA rating
NEMA 3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature: 600 A amperage rating with three-pole, four-wire configuration and neutral; Business Impact: enables protection of large motors and drives with solid fault isolation, reducing arc flash exposure and easing wiring complexities; Application: ideal for switchgear and motor control centers in manufacturing and processing facilities. Feature: NEMA 3R enclosure and painted galvanized steel construction; Business Impact: withstands outdoor and dusty environments, reducing corrosion risk and service calls; Application: outdoor switchgear rooms and edge-of-facility panels. Feature: Fuse class provision Class H and fusible with neutral; Business Impact: ensures predictable fuse performance and safe shutdown sequences, supporting NFPA/UL compliance; Application: critical power distribution and control circuits. Feature: 600 A rating with compatibility to large feeders (#2-600 kcmil Al and #1/0-750 kcmil Al); Business Impact: expands installation flexibility and reduces conductor crowding; Application: high-capacity feeders in CNC, packaging, and processing lines. Feature: UL Listed with NEC 230.62 barrier; Business Impact: simplifies regulatory paperwork and reduces commissioning time; Application: regulated industrial facilities needing formal safety barriers and documentation.
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FAQs
When installing the DH326NRK, confirm panel space for a three-pole, four-wire configuration with neutral and plan for the 12.84 in depth, 23.66 in width, and 51.83 in height enclosure. Ensure the conductor sizing supports #2-600 kcmil Al or #1/0-750 kcmil Al as applicable, and verify compatibility with a 240 V service. Use UL Listed documentation and NEC 230.62 barrier guidelines during mounting to streamline commissioning and future maintenance.
The 600 A rating enables robust fault isolation for large motors and drives, minimizing exposure to fault currents and reducing arc flash risk. This rating supports reliable operation of up to 200 hp at 3-phase conditions, with ample headroom for motor starting and drive inrush. In practice, this translates to improved system uptime, safer maintenance windows, and simpler coordination with upstream protective devices.
Yes. The DH326NRK uses a NEMA 3R enclosure and painted galvanized steel, designed for weather resistance and outdoor or semi-outdoor installations. This enclosure protects internal components from dust, rain, and corrosion, enabling reliable operation in varied industrial environments such as outdoor substations, manufacturing exteriors, and exposed panels, while maintaining safety and accessibility for servicing.
The DH326NRK is UL Listed and features a NEC 230.62 compliant barrier, aligning with essential electrical safety standards. This combination supports regulatory acceptance, safer commissioning, and streamlined documentation for audits and facility certifications. The product’s NEMA 3R enclosure further reinforces compliance for installations in challenging environments, reducing risk during inspections.
Maintenance benefits come from reliable, fuse-based protection and a robust enclosure that minimizes unscheduled downtime. With a straightforward 600 A protection scheme and neutral integration, the switch reduces repetitive diagnostics and fuse replacements in high-demand lines. The result is lower maintenance costs, faster fault isolation, and a favorable return on investment through enhanced equipment availability and safety compliance.