Eaton DD363FWKW-00V3 Fused Safety Switch - NEMA 4X
Part Number: DD363FWKW-00V3
Quick Summary
DD363FWKW-00V3 fused safety switch is a rugged, industrial-grade protection device for motor control and line isolation in harsh environments. Engineers often battle downtime, corrosion, and misfit enclosures when upgrading safety interlocks or safeguarding 3-phase systems. This solution carries UL Listed certification and a NEMA 4X enclosure, ensuring weather resistance and safety compliance, while the heavy-duty Class H fuse and three-pole design support reliable protection for 600 V circuits. Designed for 100 A service with a compact footprint, it also enables straightforward integration with existing control panels and electrical protection schemes, helping facilities reduce maintenance costs and improve uptime in demanding environments.
Product Information
Extended Description
DD363FWKW-00V3 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line and load side, 100 A, NEMA 4X, Class H, Fusible without neutral, Three-pole, Three-wire, 600 V, Max Hp: 30, 40/ 60, 75 hp (1/3PH @480, 600 V), #14-#1/0
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD363FWKW-00V3
UPC
786679173855
Product Length/Depth
39.19 in
Product Height
10.21 in
Product Width
12.33 in
Product Weight
50 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 4X
Enclosure material
304 stainless steel
Fuse configuration
Fusible without neutral
Number Of Poles
Three-pole
Number of wires
3
Type
Heavy duty double door safety switch
Wire size
#14-1/0 AWG
Amperage Rating
100A
Fuse class provision
Class H
HP rating - max
30, 40/ 60, 75 hp (1/3PH @480, 600 V)
NEMA rating
NEMA 4X
Voltage rating
600 V
Product Category
Watertight
Special features
V indicator line and load side, w/ window
Double Door Line Isolation Safety Switch
Double Door Line Isolation Safety Switch
Double Door Line Isolation Safety Switch
Double Door Line Isolation Safety Switch
Double Door Line Isolation Safety Switch
Eaton Specification Sheet - DD363FWKW-00V3
Feature → Business Impact → Application: The enclosure is a NEMA 4X, 304 stainless steel housing, delivering excellent corrosion resistance and washdown durability, which translates to longer service life in challenging environments such as outdoor installations or chemical facilities. This reduces replacement cycles and maintenance costs while maintaining safety performance in food processing or water treatment plants. Feature → Business Impact → Application: Three-pole, three-wire configuration with fusible without neutral design enables precise overload protection and simple coordination with downstream breakers, resulting in safer motor control for 480 V systems and reduced unplanned downtime in packaging lines or conveyors. Feature → Business Impact → Application: Voltage indicator line and load-side window improve visibility during installation and troubleshooting, cutting commissioning time and enabling faster fault diagnosis in mission-critical applications like presses or extruders. Feature → Business Impact → Application: 100 A amperage rating and Class H fuse provision offer scalable protection for motors up to 75 hp, supporting compact line isolation solutions for 600 V drives and large inverter-fed motor systems in process industries. Feature → Business Impact → Application: 39.19 in length, 12.33 in width, and 10.21 in height deliver a predictable footprint for panel layouts, aiding enclosure planning and reducing retrofitting risk in retrofit projects. Feature → Business Impact → Application: UL Listed certification and the robust warranty provide compliance assurance and a predictable maintenance cycle, enhancing lifecycle planning and supplier confidence for facilities undergoing stringent safety audits in manufacturing and logistics environments.
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FAQs
The unit provides a substantial footprint with a length of 39.19 in, width of 12.33 in, and height of 10.21 in, plus a 50 lb weight. Plan for service clearance around the enclosure for wiring, access to the load and line side indicators, and ventilation. Consider wall or panel mounting tolerances and room for future wiring changes to maintain safe operation and easy future maintenance.
Yes, this switch is rated for 600 V and supports three-pole, three-wire configurations. It protects motors up to 75 hp (1/3 PH at 480 V to 600 V) with HP ratings specified as 30, 40/60, 75 hp, depending on the connection. This makes it appropriate for midrange industrial drives and line isolation in mixed-voltage motor circuits.
The DD363FWKW-00V3 features a NEMA 4X enclosure with a 304 stainless steel body, ensuring corrosion resistance and washdown suitability. It is UL Listed, which supports regulatory compliance and safety auditing in industrial facilities. These certifications help satisfy common electrical protection and safety standards in manufacturing and processing environments.
Key features include a voltage indicator line and load-side window for quick status checks, a fusible without neutral configuration for straightforward protection coordination, and a robust enclosure designed for harsh environments. Together, these features reduce commissioning time, simplify fault diagnosis, and extend service intervals, delivering measurable uptime improvements in production lines and packaging equipment.
The combination of a durable NEMA 4X enclosure, UL Listed certification, Class H fusing, and a 100 A rating provides reliable, compliant safety protection with minimal maintenance. The compact footprint aids retrofits and panel upgrades, while the durable materials resist corrosion, lowering replacement costs. Over time, these factors translate to lower total cost of ownership and faster payback in industrial facilities.