Eaton DD324NWKW Safety Switch - UL Listed NEMA 4X
Part Number: DD324NWKW
Quick Summary
The Eaton DD324NWKW fused safety switch is designed to provide reliable isolation and protection for industrial control panels in harsh environments. It delivers dependable protection and control where uptime matters most. The unit features a NEMA 4X stainless steel enclosure and UL Listed certification, combining corrosion resistance with proven safety compliance. Its 200A rating, three-pole, four-wire design, and fusible with neutral configuration support motor loads up to 150 HP, with wiring from #6 AWG to 300 kcmil. This combination reduces maintenance costs and risk during service, while enabling straightforward installation in inline motor control and safety circuits for electricians and procurement teams.
Product Information
Extended Description
DD324NWKW Eaton: Eaton Double door single-throw fused safety switch, 200 A, NEMA 4X, Fusible with neutral, Three-pole, Four-wire, 240 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
DD324NWKW
UPC
786679173572
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
Catalog Notes
Double Door Isolation Switch
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
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)
Voltage rating
240V
Product Category
Watertight
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 - DD324NWKW
Feature to business impact to application: The 200A amperage rating and 240V three-pole, four-wire configuration deliver robust motor protection for mid‑sized industrial loads, reducing fuse trips and safeguarding equipment while enabling scalable panel design for MCCs and control panels. This translates to measurable uptime gains and lower service frequency in manufacturing lines that demand consistent power isolation. Compatibility with #6 AWG to 300 kcmil conductors supports a broad range of motor leads and feeders, simplifying procurement and installation in facilities upgrading to higher horsepower equipment. The NEMA 4X stainless steel enclosure provides corrosion resistance in washdown or chemical environments, lowering maintenance costs and extending service life. The window feature enables rapid fuse inspections, saving maintenance time during routine safety checks. UL Listed certification adds regulatory confidence, supporting compliance and audit readiness in regulated industry sectors.
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FAQs
Ensure the system is 240V and configured as three‑pole four‑wire with 200A rating. Mount the unit in a suitable enclosure, lockout/tagout, and verify the NEMA 4X rating for washdown environments. Wire from #6 AWG to 300 kcmil to the lugs, install Class H fuses with neutral, and test isolation with and without load.
Supports conductor sizes from #6 AWG up to 300 kcmil, suitable for 200A service, three‑pole four‑wire configurations. Use properly rated lugs and torque specs per Eaton standards. This range accommodates motor leads and feeders for up to 150 HP in typical 1/3PH circuits at 480–600V, ensuring compliant, reliable motor protection.
Yes. The enclosure is NEMA 4X rated and constructed from 304 stainless steel, delivering corrosion resistance and washdown compatibility. UL Listed for safety, this switch supports demanding applications in food processing, chemical, and water treatment facilities. With a window feature to inspect fuses, technicians can quickly verify status without opening the enclosure.
Rated at 200A with a 240V supply, the DD324NWKW supports HP up to 50, 50/125, and 150 HP (1/3PH at 480–600V). It uses Class H fusible with neutral and provides three-pole, four-wire configuration to safely isolate and protect motor circuits. Wire size, fuse type, and voltage compatibility align with NEC and UL listings for dependable motor control.
This heavy‑duty double door switch reduces downtime through a rugged NEMA 4X enclosure and 304 stainless steel construction, minimizing corrosion and failures in harsh environments. The window feature speeds fuse inspection, while UL listing ensures ongoing compliance. With a one‑year warranty (or 18 months from shipment), maintenance costs stay predictable, delivering a favorable total cost of ownership over the motor control life.