Eaton DD364FDKW Fused Safety Switch - UL Listed
Part Number: DD364FDKW
Quick Summary
The Eaton double door single-throw fused safety switch provides reliable circuit protection for industrial control panels in demanding environments. Maintaining uptime can be challenging when fuse changes require extended shutdowns and complex wiring, but this design emphasizes quick, tool-free maintenance. UL Listed protection with a NEMA 12/3R enclosure and Class H fuses supports 200 A service and motors up to 150 hp at 480–600 V. For system integrators, the rugged painted galvanized steel housing, compact footprint, and clear fuse visibility translate into faster installation, safer operation, and reduced lifecycle costs. This combination delivers robust protection in dusty or damp environments while aligning with common industrial standards, delivering tangible value for OEMs and maintenance teams.
Product Information
Extended Description
DD364FDKW Eaton: Eaton Double door single-throw fused safety switch, 200 A, NEMA 12/3R, Painted galvanized steel, Class H, Fusible wo neutral, Three-pole, Three-wire, 600 V, Max Hp: 50, 50/ 125, 150 hp (1/3PH @ 480, 600 V), #6-300 kcmil
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD364FDKW
UPC
786679174319
Product Length/Depth
49.9 in
Product Height
11.62 in
Product Width
17.18 in
Product Weight
85 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
Wire size
#6 AWG-300 kcmil
Amperage Rating
200A
Fuse class provision
Class H
HP rating - max
50, 50/ 125, 150 hp (1/3PH @480, 600 V)
NEMA rating
NEMA 12
Voltage rating
600 V
Product Category
Dust tight
Special features
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 - DD364FDKW
The 200 A amperage rating with three-pole operation provides reliable protection for 3-phase motors and feeders in harsh environments, reducing fault currents and protecting critical drives across industrial lines. This translates to lower downtime and safer startup sequences in manufacturing and packaging applications. The NEMA 12/3R enclosure, paired with painted galvanized steel, delivers dust and moisture resistance, extending service life and lowering maintenance costs on the plant floor. The fusible without neutral configuration with Class H fuses simplifies spare parts management and enables fast on-site fuse changes during planned outages or fault events, minimizing production impact. A window status indicator lets technicians verify fuse health at a glance, supporting safer inspections and faster troubleshooting. With HP ratings up to 50/125/150 hp and conductor compatibility from #6 AWG to 300 kcmil, it adapts to a range of motor sizes and feeder configurations, reducing part variety for mixed installations. UL Listed certification ensures compliance with safety standards, while the rugged design supports long-term reliability in dust-tight, indoor industrial environments. These features collectively enable more predictable maintenance windows, improved operator safety, and safer, more efficient electrical protection for industrial control systems.
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FAQs
Install the DD364FDKW inside a NEMA 12/3R enclosure on a level mount with adequate service clearance for tools and fuse replacements. Use three-pole, three-wire connections and conductors from #6 AWG to 300 kcmil up to 600 V. Ensure the fusible unit is correctly seated and confirm UL Listed compliance in your panel documentation.
This device provides a 200 A amperage rating with a three-pole configuration for 3-phase systems. It supports motors up to 150 hp at 480–600 V and uses fusible protection with Class H fuses. Wire size support ranges from #6 AWG to 300 kcmil, making it compatible with a broad set of motor drives and feeders.
Yes. The NEMA 12/3R enclosure and painted galvanized steel housing are designed for indoor, dust-tight and damp plant areas common in packaging and material handling. UL Listed certification further confirms compliance with safety standards, making it appropriate for continuous operation in these environments.
Maintenance focuses on fuse replacement and enclosure inspection. Because the unit uses fusible without neutral protection and Class H fuses, stock a small inventory of Class H fuses and compatible fuse clips. The window feature aids quick status checks, reducing shop time during routine audits and preventive maintenance.
The DD364FDKW can lower downtime through faster fuse changes, reduce wiring complexity with a three-wire, three-pole design, and improve safety and compliance with UL Listed certification and NEMA-rated protection. In retrofit projects, these factors translate to shorter installation windows, fewer spare parts, and more predictable maintenance budgets.