Eaton DD328NDKW-00V1 Fused Safety Switch - UL Listed
Part Number: DD328NDKW-00V1
Quick Summary
The Eaton double door single-throw fused safety switch isolates heavy electrical circuits in industrial power distributions. In demanding electrical rooms, sudden energization or misoperation can cause downtime and safety hazards for personnel. UL Listed certification ensures product safety compliance, while NEMA 12 and NEMA 3R enclosures offer reliable dust-tight indoor performance and weather-protected outdoor suitability. Class L fuse provision enhances selective protection and fault isolation, reducing arc flash risk. This unit supports 1200 A at 240 V and up to 500 hp, with a four-wire, three-pole configuration, making it a practical choice for panel builders seeking robust protection and straightforward maintenance. Leveraging its rated capability and clear line-side voltage indication, it helps streamline installation, testing, and ongoing operations for industrial facilities.
Product Information
Extended Description
DD328NDKW-00V1 Eaton: Eaton Double door single-throw fused safety switch, Voltage indicator line side, 1200 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
DD328NDKW-00V1
UPC
786679184462
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
240V
Product Category
Dust tight
Special features
V indicator line side, w/ window
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Eaton Specification Sheet - DD328NDKW-00V1
Enclosure and protection: The unit uses a painted galvanized steel enclosure rated NEMA 12 and NEMA 3R, delivering dust-tight indoor protection and weather-resistant outdoor suitability. Business impact: This minimizes the risk of contamination and corrosion in manufacturing floors or outdoor switchgear, reducing maintenance cycles. Application: Ideal for panel installations and outdoor enclosures in industrial facilities. High-current capability: With a 1200 A amperage rating at 240 V, this switch accommodates large motor loads and service feeders. Business impact: You can consolidate gear, simplify wiring, and improve short-circuit protection coordination, lowering system complexity and total cost of ownership. Application: Suitable for main-distribution panels and motor control centers in manufacturing plants. Fusible with neutral and Class L protection: The Class L fuse provision provides selective protection and precise fault isolation, while a neutral conductor is supported. Business impact: Reduces nuisance blowing and improves equipment longevity. Application: Effective for three-phase systems with balanced loads in heavy-duty applications. Three-pole, four-wire configuration with line-side voltage indicator: The switch supports standard three-phase power, incorporates a line-side window indicator for quick status checks, and allows straightforward integration with existing control circuits. Business impact: Accelerates commissioning and diagnostics, minimizing downtime. Application: Suitable for control panels in automation and process industries. Reliability and support: UL Listed certification confirms compliance with safety standards, and the included warranty (one year from installation or eighteen months from shipment) provides peace of mind. Business value: Reduced risk, faster install, and predictable maintenance cycles for industrial facilities.
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FAQs
For panel builders, install within a NEMA 12 or NEMA 3R enclosure to match environmental exposure. Wire the three-pole, four-wire configuration for 240 V systems, and ensure neutral is connected to the fusible wiring as required. Verify line-side voltage with the built-in indicator window during commissioning, and confirm UL Listed compliance before final energization.
The switch is rated for 1200 A, 240 V, with a three-pole, four-wire configuration. It uses fusible protection with a neutral and a Class L fuse. Maximum motor load support is 500 hp for three-phase applications. Enclosure protection is NEMA 12/NEMA 3R, making it suitable for indoor dusty environments and some outdoor installations.
Yes. The NEMA 12 enclosure provides dust-tight indoor protection, while the NEMA 3R rating offers weather-resistant outdoor suitability. This makes the DD328NDKW-00V1 appropriate for factory floors, outdoor substations, and other harsh industrial environments where reliable isolation and protection are essential.
The unit is UL Listed, ensuring compliance with recognized safety standards. This certification supports regulatory alignment for electrical installations. The enclosure ratings (NEMA 12/3R) also indicate suitability for both dust-prone and weather-exposed environments, aiding in risk management and workplace safety.
The product carries Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, inspect enclosure integrity, verify the line-side voltage indicator, and confirm fuse condition during routine checks to sustain protection and minimize unexpected downtime.