Eaton DH366FPK Heavy Duty Fusible Switch - UL Listed
Part Number: DH366FPK
Quick Summary
Eaton DH366FPK heavy duty fusible safety switch isolates high-current three-phase power for demanding industrial environments. In tough electrical rooms, unreliable protection and difficult maintenance drain efficiency and uptime. This unit offers a UL Listed, NEMA 4 enclosure with Class H fusing to resist dust, water, and chemical exposure while isolating circuits safely. Rated at 600 A and 600 V, it supports up to 200–500 hp depending on voltage, and is suitable for service entrances with optional neutral or ground lug kits. The combination of rugged construction and clear protection pathways delivers lower life-cycle costs and safer operation for critical manufacturing lines.
Product Information
Extended Description
DH366FPK Eaton: Eaton Enhanced visible blade single-throw safety switch, 600 A, NEMA 4, Painted steel, Class H, Three-pole, Three-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 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH366FPK
UPC
782114357484
Product Length/Depth
12.75 in
Product Height
63 in
Product Width
23 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
Catalog Notes
Suitable for service entrance use with a neutral or ground lug kit installed
Enclosure
NEMA 4
Enclosure material
Painted 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
HP rating - max
200, 400, 500 hp (3PH @240,480,600 V)
NEMA rating
NEMA 4
Voltage rating
600 V
Product Category
Heavy Duty, Fusible without neutral
Feature: 600 A amperage rating with three-pole configuration. Business Impact: Enables safe, reliable isolation of high-current motors and drives, reducing startup delays and unplanned downtime. Application: Ideal for heavy-load motor control centers and service entrances in manufacturing facilities. Feature: NEMA 4 enclosure with painted steel construction. Business Impact: Provides durable protection against dust, water ingress, and corrosion, improving uptime in harsh environments. Application: Outdoor or demanding indoor installations where environmental exposure is a concern. Feature: Class H fuse provision, fusible without neutral. Business Impact: Delivers predictable fault isolation and short-circuit protection, simplifying protection coordination and maintenance. Application: Plant-wide distribution boards and control panels requiring robust safety safeguards. Feature: Three-pole, 3-wire configuration. Business Impact: Streamlines wiring and installation while maximizing fault clearing capability. Application: Standard three-phase electrical distribution applications in industrial settings. Feature: Service entrance suitability with lug kit compatibility. Business Impact: Facilitates compliant entry protection with flexible installation options, reducing retrofit costs. Application: Utility-supply interfaces and main disconnect points. Feature: UL Listed certification. Business Impact: Supports regulatory compliance and procurement confidence, easing audits and supplier qualification. Application: Industrial facilities pursuing formal safety certifications and compliance programs.
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FAQs
DH366FPK is designed for service entrance use with optional neutral or ground lug kits. It features a NEMA 4 enclosure and a three-pole, 600 V, 600 A fusible design. When installing, ensure proper clearance, secure mounting, and compliance with UL Listed requirements to maximize safety and performance.
DH366FPK is rated for 600 A and 600 V. It supports up to 200, 400, or 500 horsepower depending on voltage, with a three-pole, three-wire configuration and Class H fuse provisions for reliable motor protection in industrial setups.
Yes. The enclosure is NEMA 4 rated, constructed from painted steel to resist dust, moisture, and corrosive conditions typically found in industrial facilities. UL Listed certification further confirms suitability for challenging environments when properly installed.
The DH366FPK is UL Listed, ensuring compliance with recognized safety standards for electrical protection devices. Its NEMA 4 enclosure and Class H fuse design also support reliability and regulatory alignment in industrial installations.
The rugged, long-life design reduces unplanned outages and maintenance cycles. With UL Listed protection and service-entrance compatibility, it lowers lifecycle costs, improves downtime resilience, and simplifies compliance during audits and equipment upgrades.