Eaton DH366NRK Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH366NRK
Quick Summary
Eaton heavy duty fusible safety switch DH366NRK provides rugged power control for large motor loads in industrial facilities. This solution addresses downtime and safety concerns that arise when isolating high-current circuits during maintenance or fault conditions. UL Listed, NEC 230.62(C) compliant barrier, and a NEMA 3R enclosure ensure code-compliant protection in outdoor and harsh environments. Designed to streamline commissioning and reduce lifecycle costs, it supports up to 600 A at 600 V and up to 500 hp, delivering reliable performance for industrial protection and control needs while aligning with long-term ROI goals.
Product Information
Extended Description
DH366NRK Eaton: Eaton Heavy duty single-throw fused safety switch, 600 A, NEMA 3R, Painted galvanized steel, Class H, Neutral, Three-pole, Four-wire, 600 V, Max Hp: 200, 400, 500 hp (3PH @240,480,600 V), (1)#2-(1)600 kcmil; and (1)#1/0-(1)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH366NRK
UPC
782113207605
Product Length/Depth
58 in
Product Height
12 in
Product Width
27.5 in
Product Weight
145 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
200, 400, 500 hp (3PH @240,480,600 V)
NEMA rating
NEMA 3R
Voltage rating
600 V
Product Category
Heavy Duty, Fusible with neutral
Feature: 600 A, 600 V rating with three-pole, fusible with neutral configuration → Business Impact: Handles high-current motor starts with controlled dissipation, improving startup reliability and reducing electrical noise → Application: Large pumps, conveyors, and fans in industrial facilities. Feature: NEMA 3R enclosure with painted galvanized steel → Business Impact: Resists weather, dust, and moisture for dependable operation in outdoor or damp locations → Application: Outdoor MCCs and process lines. Feature: Class H fuse provision and neutral connection for four-wire systems → Business Impact: Enables compliant fault isolation and safe neutral referencing, minimizing electrical faults and arc flash exposure → Application: Heavy-duty motor control circuits in manufacturing. Feature: Large conductor accommodations up to copper and aluminum sizes → Business Impact: Streamlines installation by reducing termination points and enabling robust feeders → Application: Feeders for large motors and gear-driven equipment. Feature: UL Listed, NEC barrier compliance, and 600 V rating → Business Impact: Meets reliability and safety standards, simplifying audits and regulatory approvals → Application: Industrial plants seeking compliant protection and easy integration. Feature: 58 in depth, 27.5 in width, 12 in height, 145 lb weight with 1-year (or 18 months from shipment) warranty → Business Impact: Predictable footprint and total cost of ownership with documented support → Application: Site planning, retrofit projects, and new builds in high-demand environments.
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FAQs
DH366NRK is a three-pole, four-wire device rated for 600 V and 600 A, designed for use in NEMA 3R enclosures. It supports Class H fuses with neutral, enabling a fusible switch arrangement suitable for large motor circuits in MCCs and outdoor installations. When wiring, follow NEC guidelines for feeder conductors and clear labeling to ensure safe operation and serviceability.
The switch offers a maximum HP rating of 200, 400, or 500 hp for three-phase systems at 240, 480, or 600 V, with a 600 A, 600 V electrical profile. UL Listed status and NEC barrier compliance contribute to safe startup and shutdown. This combination helps manage inrush, optimize drive performance, and protect upstream equipment in motor control applications.
Yes. The DH366NRK uses a NEMA 3R enclosure built from painted galvanized steel, providing protection against rain, sleet, and dust. Its UL Listed status and NEC barrier compliance further ensure rugged reliability in outdoor or damp locations, making it well-suited for exposed outdoor motor control and industrial installations.
Rely on UL Listed certification for electrical safety compliance and NEC 230.62(C) barrier compliance for safe separation of live parts. The NEMA 3R enclosure supports weather resistance, while the overall assembly is designed to meet industrial safety and reliability standards, aiding in code compliance during inspections and audits.
With a one-year warranty (or eighteen months from shipment) and a robust enclosure designed for durability, the DH366NRK minimizes maintenance intervals and service interruptions. Its reliable isolation and high-current capability reduce downtime, improve uptime metrics, and lower lifecycle costs for facilities operating large motor loads.