Eaton DD366NDKW-00V1 Fused Safety Switch - UL Listed
Part Number: DD366NDKW-00V1
Quick Summary
Eaton DD366NDKW-00V1 fused safety switch provides safe isolation for industrial power control and motor feeder circuits. Maintenance teams often face slow fault isolation and uncertain line-side status in complex switchgear. The unit carries UL Listed certification and uses a NEMA 12/3R enclosure, delivering durable environmental protection in dusty or wet industrial spaces; it also features a Class H fuse for reliable overcurrent safety. With three poles and four wires, it supports 600 V systems and is rated up to 600 A, offering high HP capability for 3-phase motors. This combination delivers fast safety verification, simplifies compliance, and reduces downtime while enabling easy integration with existing Eaton ARMS or similar control panels.
Product Information
Extended Description
DD366NDKW-00V1 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line side, 600 A, NEMA 12/3R, Class H, Fusible with neutral, Three-pole, Four-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
DD366NDKW-00V1
UPC
786679184769
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 with neutral
Number Of Poles
Three-pole
Number of wires
4
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
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - DD366NDKW-00V1
Enclosure and mechanical protection: The painted galvanized steel enclosure provides NEMA 12 and NEMA 3R ratings, delivering dust-tight and weather-resistant performance in demanding environments. This reduces ingress-related downtime and protects costly wiring and components, making it suitable for indoor electrical rooms as well as outdoor process areas. Electrical performance for heavy loads: With a 600 A current rating and 600 V nominal voltage, this device is a three-pole, four-wire configuration that supports large motors and high-demand feeders, improving coordination and reducing upstream protection requirements. Fuse technology and protection: Fusible with neutral design and Class H fuse provision ensure reliable overcurrent protection and straightforward fuse replacement, minimizing maintenance complexity and downtime during servicing. Visibility and accessibility: The line-side voltage indicator with a window allows quick status verification without opening the enclosure, speeding safe maintenance checks and reducing the risk of energizing a live circuit. Installation and lifecycle efficiency: Heavy-duty double-door construction, substantial dimensions, and 265 lb weight support robust serviceability, easier retrofits, and longer lifecycle in demanding plants; warranty terms (25-000) reinforce ongoing support and value.
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FAQs
The DD366NDKW-00V1 is designed for heavy-duty installation with a double-door enclosure that suits wall-mount or panel-mount configurations. Its dimensions (depth 19.31 in, height 25.32 in, width 77.96 in) and weight (265 lb) support secure mounting in electrical rooms or equipment rooms, while the 4-wire, three-pole design enables straightforward integration with existing feeders and MCCs.
This switch is rated for 600 A and 600 V, with a three-pole, four-wire configuration and a fusible with neutral arrangement. It supports up to 400–500 hp for 3-phase motors at 480/600 V, providing robust control for large drives and reducing the need for multiple protection devices in a typical motor control scheme.
Yes. The enclosure is rated NEMA 12 and NEMA 3R, offering dust-tight and weather-resistant protection suitable for indoor electrical rooms and certain outdoor environments. This makes the switch well-suited for industrial processes where contamination or moisture exposure is a concern, while maintaining performance and safety.
The DD366NDKW-00V1 is UL Listed, providing recognized safety compliance for electrical equipment. It features a NEMA 12/3R enclosure protection rating and a Class H fuse configuration, which aligns with common industrial safety and protection standards for large, fusible safety switches.
Eaton offers a warranty under policy 25-000, typically one year from installation or eighteen months from shipment, whichever occurs first. This supports ongoing maintenance planning, reduces unexpected repair costs, and complements the device’s rugged construction and long service life in demanding facilities.