Eaton DD327NDKW Fused Safety Switch - UL Listed
Part Number: DD327NDKW
Quick Summary
Eaton DD327NDKW fused safety switch provides reliable isolation for heavy-duty electrical circuits in industrial facilities. In demanding plants, downtime and safety risks from noncompliant switchgear are costly, so a rugged, standards-based solution matters. UL Listed certification, a NEMA 12/3R enclosure, and Class L fusing ensure indoor dust-tight protection and dependable operation in harsh environments. The device supports three-pole, four-wire configurations at 240 V and handles up to 500 hp for motor loads, delivering safer startup and clear fault isolation. By combining robust construction with straightforward maintenance and installation, this switch helps reduce unplanned outages and optimize plant-wide safety and reliability. Its window-enabled fuse status feature aids rapid diagnostics and serviceability.
Product Information
Extended Description
DD327NDKW Eaton: Eaton Double door single-throw fused safety switch, 800 A, NEMA 12/3R, Painted galvanized steel, 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
UPC
786679173732
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
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
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 - DD327NDKW
Feature — 800 A amperage rating and three-pole, four-wire configuration at 240 V enable handling large motor loads with reduced startup transient risk, delivering measurable uptime improvements in manufacturing lines. Business Impact — Higher motor reliability translates to less downtime and lower maintenance costs, supporting more predictable production schedules. Application — Ideal for motor control centers and large equipment in process facilities seeking robust isolation and safe energization. Feature — Fusible with neutral and Class L fuse provide precise protective coordination for heavy-duty applications, enabling selective protection and fuse-saving maintenance cycles. Business Impact — Lower fault escalation and extended fuse life reduce replacement costs while maintaining safety margins. Application — Suited for heavy machinery and power distribution where dependable overcurrent protection is critical. Feature — NEMA 12, NEMA 3R enclosure offers dust-tight indoor protection with weather resistance for versatile installation. Business Impact — Simplifies installation in varied environments and extends service life through corrosion-resistant painted galvanized steel. Application — Suitable for indoor equipment rooms and outdoor-rated installations where enclosure protection matters. Feature — Enclosure with a window allows quick fuse status verification during maintenance. Business Impact — Speeds troubleshooting and reduces downtime during preventative checks. Application — Maintenance routines in facilities prioritizing visible fuse status. Feature — UL Listed certification reinforces compliance with safety standards and supports regulatory audits. Business Impact — Demonstrates conformance to quality requirements, aiding procurement and install confidence. Application — Critical for industries with stringent safety and reliability expectations.
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FAQs
Install as a three-pole, four-wire device rated for 240 V in a suitable enclosure. Connect the three hot legs to the line terminals, tie the neutral to the neutral/fuse circuit, and ensure the device is mounted in a dust-tight area per NEMA 12/3R guidance. Verify UL Listed compliance and use Class L fuses for proper protection. The window feature aids fuse status checks during commissioning.
The switch provides 800 A amperage rating, 240 V operation, and a three-pole, four-wire configuration with fusible protection and neutral. It supports up to 500 hp at 3-phase 480/600 V, with a NEMA 12/3R enclosure, painted galvanized steel construction, and UL Listed certification. Suitable for heavy motor loads and large equipment isolation.
Yes. With an 800 A rating and 500 hp capability (3PH @480/600 V), the DD327NDKW is designed for large motor control applications. Its fusible with neutral configuration, Class L fuse, and NEMA 12/3R enclosure provide reliable isolation and protection, while the durable galvanized enclosure supports long service life in demanding environments.
The DD327NDKW provides UL Listed certification and features a dust-tight NEMA 12 enclosure with a NEMA 3R rating option for weather resistance. The painted galvanized steel enclosure and Class L fusible configuration are designed to withstand harsh indoor environments while maintaining safe operation and ease of maintenance.
The device carries a one-year warranty (Eaton policy) and includes a fuse status window for quick diagnostics, reducing maintenance time. Its robust enclosure and high amperage/fuse ratings minimize unplanned outages in heavy equipment settings, improving overall equipment effectiveness (OEE) and lowering lifecycle costs through extended service intervals.