Eaton DD363NDKW Fused Safety Switch - UL Listed
Part Number: DD363NDKW
Quick Summary
Eaton double door single-throw fused safety switch enables reliable isolation for industrial machines and control panels. Maintenance teams often contend with slow resets, ambiguous de-energizing procedures, and unexpected downtime when isolation isn’t clearly defined. This model is UL Listed and uses a NEMA 12/3R enclosure with Class H fusing, suitable for 600 V motor circuits. It delivers rugged electrical protection in control cabinets with four-wire configurations, helping you meet code requirements while reducing field service time. With 100 A capacity and HP ratings up to 75 hp, it scales from small machines to medium‑duty lines, simplifying procurement and design. Overall, the switch reduces downtime, speeds installation, and strengthens safety compliance across industrial environments.
Product Information
Extended Description
DD363NDKW Eaton: Eaton Double door single-throw fused safety switch, 100 A, NEMA 12/3R, Painted galvanized steel, Class H, Fusible with neutral, Three-pole, Four-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
DD363NDKW
UPC
786679173879
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 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
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 12
Voltage rating
600 V
Product Category
Dust tight
Special features
w/ window
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
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ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - DD363NDKW
Feature: The DD363NDKW provides a 100 A amperage rating and a 600 V maximum, with HP ratings of 30, 40/60, and 75 hp for various 3‑phase configurations. Business Impact: This enables safe, code-compliant isolation for motor loads, reducing nuisance fuse blows and enabling more predictable startup. Application: Ideal for motor control panels, conveyors, and machinery feeders where reliable protection is essential. Feature: Fusible with neutral fuse configuration, Class H fuse provision. Business Impact: Supports selective coordination and robust short‑circuit protection, minimizing arc-flash risk and maintenance downtime. Application: Suitable for centralized power distribution in industrial plants and packaged equipment that requires reliable protection with a neutral path.Feature: Enclosure rated NEMA 12 and NEMA 3R with painted galvanized steel. Business Impact: Delivers dust-tight containment and weather resistance for indoor and outdoor installations, reducing corrosion and field exposure. Application: Use in harsh manufacturing floors, outdoor equipment pads, and wash-down environments where durable protection is needed.Feature: Three-pole, four-wire configuration with #14-1/0 AWG wiring. Business Impact: Ensures clear power routing and compatibility with standard control circuits, enabling faster panel wiring and safer maintenance. Application: Motor starters, MCCs, and control panels requiring reliable multi-wire connections and straightforward wiring layouts.Feature: UL Listed certification and Eaton warranty coverage (one year from installation or eighteen months from shipment). Business Impact: Improves compliance confidence, easing procurement audits and reducing total cost of ownership with predictable service windows. Application: Critical for regulated facilities and projects requiring proven supplier support and documented quality.
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FAQs
Install the DD363NDKW in a suitable enclosure that supports its NEMA 12/3R rating and space for a three-pole, four-wire connection. Plan for 39.19 in length, 12.33 in width, and 10.21 in height with a 50 lb weight. Use #14-1/0 AWG conductors as listed, and ensure neutral fusible wiring aligns with the Class H fuse provisions.
Confirm a 100 A amperage rating and 600 V maximum voltage, with HP ratings of 30, 40/60, and 75 hp depending on the operating configuration. Verify three-pole, four-wire wiring and fusible with neutral for proper protection and selective coordination in motor feeders.
Yes. The unit's NEMA 12 and NEMA 3R enclosure ratings provide dust-tight and weather-resistant protection, making it suitable for indoor environments with dust and some outdoor exposure. The painted galvanized steel enclosure adds corrosion resistance in challenging industrial conditions.
The DD363NDKW is UL Listed, indicating it meets recognized safety standards for industrial electrical equipment. This certification supports compliance with electrical codes and reduces procurement risk on projects that demand validated safety performance and reliability.
The switch reduces downtime through reliable isolation and faster maintenance cycles thanks to clear wiring and robust construction. With durable enclosure and Class H fuse protection, you can expect fewer fuse replacements and longer service intervals, improving overall plant uptime and lowering maintenance costs over the equipment lifecycle.