Eaton DH266NRK Heavy Duty Fusible Safety Switch - NEMA 3R
Part Number: DH266NRK
Quick Summary
Eaton DH266NRK heavy duty fusible safety switch isolates 600 A industrial circuits safely in harsh environments. Downtime during maintenance and improper isolation can elevate arc-flash risk and regulatory non-compliance. This unit is UL Listed, it supports NEC 230.62 compliant barriers, and it uses a rugged NEMA 3R enclosure to withstand challenging environments. Designed for reliable integration with Class H fuses and 600 V systems, it also accommodates two-pole installations with neutral, helping streamline panel design and reduce total cost of ownership.
Product Information
Extended Description
DH266NRK Eaton: Eaton Heavy duty single-throw fused safety switch, 600 A, NEMA 3R, Painted galvanized steel, Class H, Fusible with neutral, Two-pole, Three-wire, 600 V, (1)#2-(1)600 kcmil and (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH266NRK
UPC
786685177007
Product Length/Depth
58 in
Product Height
12 in
Product Width
27.5 in
Product Weight
153 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
Two-pole
Number of wires
3
Type
Heavy duty fusible safety switch
Amperage Rating
600A
NEMA rating
NEMA 3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible with neutral
Enclosures engineered for harsh conditions deliver long-term reliability; the NEMA 3R painted galvanized steel enclosure provides weather and corrosion resistance, enabling safe outdoor or dusty indoor installations with minimal maintenance and reduced downtime, improving overall equipment effectiveness. The fusible with neutral configuration and Class H fuse provision enhances fault isolation, enabling safer service and easier downstream protection coordination for critical loads. With a 600 A rating and a 600 V voltage rating, this switch supports heavy-duty feeders and large motors, reducing the number of devices required and simplifying panel layouts. UL Listed and NEC 230.62 compliant barrier certification reinforce regulatory compliance, accelerating approvals and reducing engineering risk across facilities. Its two-pole, three-wire design and conductor termination capacity (up to #2–600 kcmil, or #1/0–750 kcmil Cu/Al) offer flexible wiring options and straightforward field installation, saving time during commissioning and maintenance. The physical footprint (58 in depth, 12 in height, 27.5 in width) and 153 lb weight provide a sturdy, robust solution that stays in service in demanding environments, minimizing replacement cycles and total cost of ownership.
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FAQs
The DH266NRK is designed for integration with standard low-voltage distribution panels and compatible switchgear supporting two-pole, three-wire configurations with neutral. It accepts Class H fuses and is built for 600 V systems, simplifying panel design by consolidating protection and isolation in a single enclosure. Verify your busbar dimensions and mounting provisions to ensure secure installation.
Key specs include a 600 A amperage rating, 600 V voltage rating, NEMA 3R enclosure, and fusible with neutral configuration. The unit is UL Listed and designed to meet NEC 230.62 barrier requirements, providing reliable fault isolation and compliance in industrial environments. It supports two-pole, three-wire wiring and robust conductor terminations up to large Cu/Al sizes.
Yes. The DH266NRK uses a painted galvanized steel enclosure rated NEMA 3R, which is appropriate for outdoor use and protected indoor environments subject to weather, dust, or rain. This rugged construction helps minimize corrosion and maintenance while maintaining safe isolation and protection for high-current circuits.
The DH266NRK is UL Listed and features NEC 230.62 compliant barrier provisions, ensuring safe isolation and compliance with relevant electrical codes. These certifications support risk reduction, streamline approvals for industrial installations, and improve overall project timelines when specifying protection equipment for critical loads.
By combining a heavy-duty 600 A switch with a durable NEMA 3R enclosure and UL/NEC-compliant protections, the DH266NRK reduces maintenance downtime and simplifies spares holding. Its robust construction and reliable Class H fuse compatibility lower replacement costs and extend service life, delivering tangible ROI through improved uptime and streamlined panel design.