Eaton DD327NDKW-00V3 Safety Switch - UL Listed
Part Number: DD327NDKW-00V3
Quick Summary
Eaton DD327NDKW-00V3 double door fused safety switch isolates power in heavy-duty control panels. This solution addresses the frequent challenge of safe, rapid line-side isolation during maintenance without compromising productivity. UL Listed certification provides rugged reliability, while the NEMA 12/3R enclosure and galvanized steel construction protect against dust and moisture in harsh environments. The device supports up to 800 A, four-wire configurations, and a 240 V system with Class L fusing, delivering robust performance for demanding motor loads. By enabling clear line and load indication and scalable HP ratings up to 500 HP, it helps facilities reduce downtime, improve safety compliance, and streamline electrical distribution in manufacturing, processing, and HVAC applications.
Product Information
Extended Description
DD327NDKW-00V3 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line and load side, 800 A, NEMA 12/3R, Class L, Fusible with neutral, Three-pole, Four-wire, 240 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
DD327NDKW-00V3
UPC
786679173763
Product Length/Depth
86.73 in
Product Height
22.16 in
Product Width
26.57 in
Product Weight
300 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 w/ Line&Load Voltage Indicators
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
800A
Fuse class provision
Class L
HP rating - max
500, 500 hp (3PH @480/600 V)
Voltage rating
240V
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 - DD327NDKW-00V3
Feature: High current capacity and Class L fuse support up to 800 A and 500 HP. Business Impact: Enables safe, reliable isolation for large motors, reducing panel count and limiting downtime due to fuse faults. Application: Suitable for heavy-duty conveyor systems and large pumps where sustained high current and protection are essential. Feature: Line and load voltage indicators with a viewing window. Business Impact: Quick visual confirmation during maintenance minimizes guesswork and accelerates safe energizing/de-energizing steps. Application: Ideal for changeovers and service windows in mixed-use plants. Feature: NEMA 12 and NEMA 3R enclosure in painted galvanized steel. Business Impact: Dust-tight and moisture-protected housing lowers environmental risk and maintenance cost. Application: Indoor production floors and outdoor installations with moderate exposure. Feature: Three-pole, four-wire, 240 V configuration. Business Impact: Simplifies wiring, supports neutral return, and suits most three-phase control circuits. Application: Motor control centers and distributed motor starters. Feature: Fuse configuration Class L with neutral provisions. Business Impact: Aligns with common motor protection standards, reducing parts variety and improving serviceability. Application: OEM and retrofit projects seeking standardized protection. Feature: Compact, heavy-duty design with durable construction. Business Impact: Improves lifecycle cost and delivers predictable performance in demanding environments. Application: Food & beverage, metals processing, and packaging lines where reliability matters.
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FAQs
The DD327NDKW-00V3 is a substantial unit with dimensions of 86.73 in length, 26.57 in width, and 22.16 in height, weighing about 300 lb. Plan for adequate accessibility, service clearance, and secure mounting on a rigid, level surface. Its NEMA 12/3R enclosure supports indoor and outdoor use, and its three-pole, four-wire design requires appropriate wiring practices for a 240 V system with neutral.
This safety switch is rated for 800 A with a 240 V control circuit and a maximum of 500 HP (three-phase at 480/600 V). The fusible with neutral configuration and Class L fusing provide motor protection aligned with common industrial standards, reducing fault propagation, improving reliability, and supporting high-performance motor control without frequent replacements.
Yes. The unit carries UL Listed certification, confirming electrical safety compliance. It uses a NEMA 12/3R enclosure with painted galvanized steel, offering dust-tight protection and suitable moisture resistance for indoor environments and moderate outdoor exposure, helping maintain reliability in harsh facilities.
The double-door design includes a voltage indicator on both the line and load sides with a window for quick visual checks. This feature reduces energization guesswork, speeds safe lockout/tagout procedures, and shortens maintenance windows by providing immediate, verifiable status during servicing and commissioning.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first. This, combined with the UL Listed reliability and robust enclosure, supports lower total cost of ownership. For spare parts or technical guidance, refer to Eaton’s standard service policies and authorized distributor support channels.