Eaton fused safety switch DD366FDKW-00V1 - UL Listed
Part Number: DD366FDKW-00V1
Quick Summary
Eaton fused safety switch provides safe isolation for heavy-duty industrial power systems. Maintenance teams often grapple with complex wiring and prolonged downtime when switching gear; this unit offers a fusible without neutral configuration and a visible line-side voltage indicator to simplify diagnostics. UL Listed protection with a NEMA 12/3R enclosure and Class H fuse provisions delivers reliable safety and environmental performance in harsh plant environments. The rugged double-door design enables straightforward installation and long service life, while the model’s robust electrical protection and circuit control features help manufacturers scale motor control up to 500 hp with confidence. By aligning with industry standards, it supports compliance initiatives and reduces total cost of ownership over time.
Product Information
Extended Description
DD366FDKW-00V1 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line side, 600 A, NEMA 12/3R, Class H, Fusible without neutral, Three-pole, Three-wire, 600 V, Max Hp: 400, 500 hp (3PH @480/600 V), (1)#2(1)#2-(1)600, and (1)750 kcmil
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD366FDKW-00V1
UPC
786679184363
Product Length/Depth
19.31 in
Product Height
25.32 in
Product Width
77.96 in
Product Weight
265 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 configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Heavy duty double door safety switch
Amperage Rating
600A
Fuse class provision
Class H
HP rating - max
400, 500 hp (3PH @480/600 V)
Voltage rating
600 V
Product Category
Dust tight
Special features
V indicator line side, w/ window
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - DD366FDKW-00V1
Fusible without neutral configuration simplifies field wiring and reduces installation time. This direct-wiring approach lowers material costs and minimizes potential neutral-related faults. Ideal for three-pole, three-wire systems in heavy-duty motor control applications across manufacturing and processing facilities. Line-side voltage indicator with window enables quick status verification during routine maintenance. Faster diagnostics reduce mean time to repair and improve plant uptime. Used across heavy machinery installations where visibility and reliability of status indicators are critical. 600 A amperage rating paired with a 600 V voltage rating supports large motors and pump loads. Powering up to 500 hp (3PH @480/600 V) ensures a single device handles diverse motor requirements, reducing spare part needs. This aligns with energy management and safety programs in modern plants. UL Listed certification and Class H fuse protection ensure regulatory compliance and protective coordination. Enclosure options include NEMA 12 for dusty environments and NEMA 3R for outdoor or washdown areas, with painted galvanized steel for durability. These features translate to lower maintenance risk and longer service life. Conductor sizing accommodates large feeders: up to #2 AWG or 750 kcmil on line side with (1) 750 kcmil as specified; three-pole, three-wire design supports straightforward integration into existing switchgear and MCCs. Warranty and Eaton’s policy provide assurance for long lifecycle projects.
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FAQs
The DD366FDKW-00V1 is a heavy-duty fused safety switch used to provide safe isolation for three-phase power systems in industrial control panels. It supports up to 600 A at 600 V, with a three-pole, three-wire configuration and a fusible without neutral setup. Its design enables safe motor control and protection in manufacturing, processing, and packaging environments, ensuring reliable shutdown and maintenance isolation when required.
Yes. The DD366FDKW-00V1 is specified for 600 V three-phase systems and is rated for up to 500 hp on 480/600 V three-phase service. This makes it suitable for large motors, pumps, and conveyors in industrial facilities, offering robust protection while simplifying wiring through its fusible without neutral configuration.
This safety switch is UL Listed and features a NEMA 12, NEMA 3R enclosure. The NEMA 12 rating provides dust-tight protection suitable for indoor environments, while NEMA 3R adds rain- and corrosion-resistance for outdoor or washdown areas. The Class H fuse provision further enhances protection coordination for reliable motor control and safety compliance.
The unit supports a three-pole, three-wire configuration with fusible protection and does not require a neutral conductor, simplifying wiring. It accommodates large feeders, including sections sized up to #2 AWG on the line side and up to 750 kcmil per the documented conductor ranges, enabling flexibility in feed design for heavy loads.
Maintenance benefits include rapid fault isolation via the line-side voltage indicator window, straightforward wiring without neutral, and UL Listed protection that reduces compliance risk. ROI comes from reduced downtime, faster commissioning, fewer spare parts for large motor circuits, and longer service life due to durable painted galvanized steel enclosures and robust Class H fuse protection.