Eaton DD368NDKW Double Door Fused Safety Switch - UL Listed
Part Number: DD368NDKW
Quick Summary
Eaton double door fused safety switch provides safe isolation and power control for large industrial panels and critical equipment. Downtime and compliance gaps from undersized or non UL-listed switches can raise risk and operating costs. With UL Listed safety certification, a NEMA 12/3R enclosure, and Class L fuse provisions, it meets harsh‑environment requirements. This heavy‑duty, three‑pole, four‑wire design is ideal for industrial switchgear and panel protection, enabling faster installation with standard outlets and robust uptime. It handles high-demand feeds up to 1200 A and 600 V, ensuring scalable protection as your plant evolves. By sourcing from Eaton, maintenance teams benefit from standardized spares and quicker replacement cycles.
Product Information
Extended Description
DD368NDKW Eaton: Eaton Double door single-throw fused safety switch, 1200 A, NEMA 12/3R, Painted galvanized steel, Class L, Fusible with neutral, Three-pole, Four-wire, 600 V, Max Hp: 500, 500 hp (3PH @480/600 V), (4)#1/0-(4)750 kcmil
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD368NDKW
UPC
786679184912
Product Length/Depth
27.18 in
Product Height
43.11 in
Product Width
91.02 in
Product Weight
575 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 with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty double door safety switch
Amperage Rating
1200A
Fuse class provision
Class L
HP rating - max
500, 500 hp (3PH @480/600 V)
Voltage rating
600 V
Product Category
Dust tight
Special features
w/ window
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - DD368NDKW
DD368NDKW uses a three-pole, four-wire configuration with fusible neutral, delivering precise isolation for large feeders. This arrangement minimizes fault propagation and ensures predictable protective coordination across power distribution stages. In practice, it enables safe, lockable isolation during maintenance while reducing arc-flash exposure for crew. For design engineers, the result is a dependable foundation for controlling high-demand equipment on manufacturing lines, processing plants, and critical machinery. The NEMA 12, NEMA 3R enclosure built from painted galvanized steel provides durable protection against dust, moisture, and corrosion in harsh environments. The rugged housing lowers maintenance costs and extends service life, even on outdoor installations with limited weather control. Installers appreciate compatibility with standard Eaton mounting patterns and the ability to retrofit existing switchgear without major panel redesigns. Fuse configuration is fusible with neutral, using Class L fuses to provide selectivity and coordinated protection for large motors. The product carries an amperage rating of 1200 A and a voltage rating of 600 V, supporting up to 500 hp on 480/600 V three-phase systems. This combination delivers reliable protection for heavy-load feeders while minimizing nuisance trips in normal operation. UL Listed certification confirms safety compliance, and the heavy‑duty construction supports long service life and predictable maintenance intervals. The design also simplifies spare parts planning with common components across Eaton’s safety switch family, reducing inventory complexity. Operators benefit from improved uptime, faster fault isolation, and streamlined procurement for multi-site deployments. With broad compatibility to industrial safety practices and Eaton accessories, the DD368NDKW supports scalable protection as facilities grow, helping reduce total cost of ownership. Coupled with strong installation support and documentation, it helps engineering teams meet installation deadlines and compliant testing windows.
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FAQs
Yes. The DD368NDKW supports three-pole, four-wire configurations and is designed for 600 V three-phase systems. Its fusible with neutral design ensures proper protection coordination, and the NEMA 12/3R enclosure provides suitable environmental protection for indoor and protected outdoor installations. When retrofitting, verify panel cutouts and mounting patterns align with Eaton accessories for a seamless upgrade.
The switch uses Class L fuses to deliver selectivity for large motor loads. It features a 1200 A amperage rating and a 600 V voltage rating, capable of handling up to 500 hp at 480/600 V in three-phase service. This combination provides reliable protection while minimizing nuisance tripping during normal operation and peak start-up currents.
Ideal for heavy-load feeders in manufacturing, process industries, and power distribution panels, the DD368NDKW supports critical equipment protection on high-demand lines. It is well-suited to retrofits and new installations requiring durable enclosures, UL safety certification, and compatibility with Eaton safety switch accessories. It also suits environments demanding dust-tight and weather-resistant protection.
This switch is UL Listed, which validates compliance with recognized safety standards. The NEMA 12/3R enclosure rating ensures environmental protection suitable for dusty, damp, or outdoor-protected installations. Class L fuse provisions also contribute to regulatory compliance by delivering coordinated protection. Together, these certifications simplify procurement, testing, and commissioning in regulated facilities.
Maintenance benefits include longer service life from a rugged galvanized enclosure and commonality of spare parts across Eaton’s safety switch family, reducing inventory costs. The high amperage and voltage ratings, plus UL listing, reduce downtime by enabling reliable protection and quicker fault isolation. Overall, you gain lower total cost of ownership through improved uptime and easier multi-site procurement.