Eaton DH366FDKW Fusible Safety Switch - UL Listed
Part Number: DH366FDKW
Quick Summary
DH366FDKW heavy duty fusible safety switch from Eaton provides safe power isolation for industrial panels and equipment. Maintenance teams often face the challenge of protecting personnel while enabling rapid service; this unit delivers fast de-energization without sacrificing protection. UL Listed, compatible with NEMA 12/3R enclosures, and featuring Class H fuses, it supports 600 V systems in a sturdy three-pole, three-wire configuration. The painted galvanized steel enclosure resists corrosion where environments demand durability, and the enhanced visible blades with an upper viewing window support quick verification during maintenance. For spec-driven projects, it integrates with standard Eaton accessories and controller interfaces, delivering improved reliability, faster installation, and lower lifecycle costs in manufacturing and processing facilities.
Product Information
Extended Description
DH366FDKW Eaton: Eaton Enhanced visible blade single-throw safety switch, Enhanced visible blades, upper viewing windoww, 600 A, NEMA 12/3R, Painted galvanized steel, Class H, Three-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
DH366FDKW
UPC
786680148811
Product Length/Depth
64 in
Product Height
13 in
Product Width
25.5 in
Product Weight
160 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
Enclosure
NEMA 12, 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
600A
NEMA rating
NEMA 12/3R
Voltage rating
600 V
Enhanced visible blades and an upper viewing window improve operator confidence and maintenance accuracy, enabling quick verification and reducing mis-wiring risk. This translates to faster diagnostics and less downtime on control panels where frequent access is required. Fuse class provision is Class H and configured fusible without neutral, delivering robust protection for equipment and personnel while reducing arc-flash exposure during servicing. The 600 A, 600 V rating combined with NEMA 12/3R enclosure ensures reliable protection for motors, feeders, and power distribution in challenging environments, supporting consistent performance in manufacturing and processing lines. The painted galvanized steel enclosure delivers corrosion resistance and longevity, with compatibility to 3R outdoor or semi-outdoor applications and straightforward installation with standard mounting practices. The three-pole, three-wire configuration and ability to accept large feeder conductors up to 600 kcmil Cu/Al simplify integration with existing plant wiring and switchgear. UL Listed certification and Eaton warranty offer regulatory assurance and predictable lifecycle costs for maintenance planning and ROI calculations.
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FAQs
The DH366FDKW is designed for standard electrical panel installations with NEMA 12/3R enclosures. It requires a robust mounting framework capable of handling a 64 in depth footprint and a 25.5 in width enclosure. Ensure adequate clearance for front-access service, and plan for conductor ingress/egress up to the listed 600 A, 600 V rating. Use compatible Eaton mounting kits and follow enclosure manufacturer guidelines for safe installation and service access.
The unit provides a 600 A amperage rating and a 600 V voltage rating, suitable for heavy industrial feeders. It accepts large feeders with conductor sizes up to 600 kcmil Cu/Al and supports a three-pole, three-wire configuration without neutral. This makes it ideal for motors, drives, and large process lines where high current isolation and reliable fault protection are required.
DH366FDKW is compatible with NEMA 12 and NEMA 3R enclosure environments, making it suitable for indoor dry locations and protected outdoor or semi-outdoor installations. The painted galvanized steel enclosure provides corrosion resistance in harsh environments, contributing to long-term reliability in manufacturing floors, outdoor substations, and processing facilities.
This safety switch carries UL Listed certification, confirming compliance with recognized safety standards. Eaton provides a standard warranty under policy 25-000, offering one year from installation or 18 months from shipment, whichever occurs first. This supports maintenance planning and helps quantify total cost of ownership for critical protection equipment.
Official documentation is available from Eaton as the Specification Sheet for DH366FDKW. Accessing the datasheet provides detailed electrical ratings, wiring diagrams, torque values, and installation notes to ensure compliant integration with your control panels and feeder circuits. This resource is essential for procurement, spec reviews, and commissioning.