Eaton DD366FDKW-00V3 Fused Safety Switch - UL Listed
Part Number: DD366FDKW-00V3
Quick Summary
Eaton double door single-throw fused safety switch protects motor circuits in industrial control panels. This rugged unit delivers safe, reliable isolation for high‑current applications while streamlining maintenance. UL Listed certification and rugged NEMA 12/3R enclosure ratings help meet compliance in dusty, wet, or temperate environments. With a 600 A amperage rating and a 600 V maximum voltage, the three-pole, fusible without neutral design supports heavy machinery and large motors. The device also offers a V indicator line and load side window for quick status checks, supporting rapid fault diagnosis during startups or preventive maintenance. By combining robust protection with straightforward installation and compatibility, it supports uptime and reduces total cost of ownership.
Product Information
Extended Description
DD366FDKW-00V3 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line and load side, 600 A, NEMA 12/3R, Fusible without neutral, Three-pole, Three-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
DD366FDKW-00V3
UPC
786679184387
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 without neutral
Number Of Poles
Three-pole
Number of wires
3
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 and load side, w/ window
ARMS Enclosed Circuit Breaker
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Eaton Specification Sheet - DD366FDKW-00V3
Feature: 600 A amperage rating enables robust protection for large motors. Business Impact: Reduces overload risk and downtime while extending motor life. Application: Suitable for MCCs and main feeders in heavy industrial environments. Feature: 600 V voltage rating paired with HP rating of 400–500 hp (3PH at 480/600 V). Business Impact: Supports high-power motor loads with reliable isolation, enhancing plant productivity. Application: Ideal for large industrial drives and machine lines requiring substantial fault protection. Feature: NEMA 12 and NEMA 3R enclosure ratings. Business Impact: Delivers dust and moisture resistance in both indoor and light outdoor settings, reducing corrosion risk. Application: Perfect for manufacturing floors, washdown areas, and controlled environments. Feature: Fusible without neutral fuse configuration and Class H fuse provision. Business Impact: Streamlines fuse selection and maintenance while ensuring code-compliant overcurrent protection. Application: Suited for redundant power feeds and centralized switchgear assemblies. Feature: V indicator line and load side window with three-pole, three-wire configuration. Business Impact: Speeds fault isolation and reduces troubleshooting time during commissioning. Application: Effective in control panels and MCCs where quick status checks are critical. Feature: Heavy-duty painted galvanized steel enclosure and 600 A rating. Business Impact: Durability under harsh conditions lowers replacement cycles and long-term ownership costs. Application: Industrial environments with high dust, humidity, or occasional washdown. Feature: UL Listed certification and 3‑pole fused design. Business Impact: Ensures regulatory compliance and safer lockout/tagout procedures. Application: Required in facilities prioritizing formal safety programs and audit readiness.
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FAQs
The DD366FDKW-00V3 is a three-pole, fusible without neutral device designed for bolted-in installation in standard control panels. It supports three wires and a 600 V maximum rating, with a 600 A capacity. Enclosure options include NEMA 12 and NEMA 3R, and the unit includes a V indicator window for line/load status checks, aiding wiring verification and commissioning.
Key ratings are 600 A amperage and 600 V voltage, with a HP rating of 400–500 hp for three-phase 480/600 V services. The fuse class provision is Class H, and the device is UL Listed. It uses a fusible without neutral configuration and is a three-pole, three-wire switch, suitable for large motors and heavy feeders.
Yes. The enclosure is rated to NEMA 12 and NEMA 3R, providing protection against dust and certain moisture exposure. This makes the DD366FDKW-00V3 suitable for indoor plant floors and outdoor-rated locations where occasional exposure to the elements occurs, aligning with typical industrial control and protection requirements.
The unit is UL Listed, signaling conformance to recognized safety standards. The enclosure ratings (NEMA 12/3R) also support compliance for dust-tight and partially weather-protected installations. This combination aids in meeting common industry safety programs and audit requirements for electrical protection devices in industrial settings.
A 600 A, 600 V, three-pole configuration with a clear V indicator window simplifies fault isolation and reduces commissioning time. The fusible without neutral design streamlines fuse selection, while the rugged galvanized steel enclosure lowers replacement costs in harsh environments. Overall, it minimizes downtime, extends motor life, and lowers total cost of ownership in high‑demand industrial plants.