Eaton DD325NWKW Fused Safety Switch - UL Listed

Part Number: DD325NWKW
Manufacturer
Eaton
Part number
DD325NWKW

Quick Summary

Eaton double door fused safety switch isolates main power for large industrial motors. Operators often contend with corroded enclosures, exposed fuse parts, and unexpected downtime when protection fails. This model features a 304 stainless steel enclosure with a NEMA 4X rating, delivering corrosion resistance and reliable sealing in washdown environments. UL Listed certification adds confidence for safety compliance across plant networks, while the fusible-with-neutral configuration supports safe fault isolation. Engineers will appreciate compatibility with 240V systems and high-horsepower motors, plus Eaton's warranty and service support that reduce total cost of ownership. In addition to strong performance, the unit’s 400A rating and three-pole design streamline panel layout and spare parts compatibility.

Product Information

Extended Description

DD325NWKW Eaton: Eaton Double door single-throw fused safety switch, 400 A, NEMA 4X, Fusible with neutral, Three-pole, Four-wire, 240 V, Max Hp: 250, 350 hp (3PH @480/600 V), (2)#1/0(1)#1/0-(2)300 kcmil-#1/0, or (1)175 kcmil-#1/0
Product Name
Eaton double door single-throw fused safety switch
Catalog Number
DD325NWKW
UPC
786679184226
Product Length/Depth
16.41 in
Product Height
24.32 in
Product Width
72.46 in
Product Weight
219 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 4X
Enclosure material
304 stainless steel
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty double door safety switch
Amperage Rating
400A
Fuse class provision
Class H
HP rating - max
250, 350 hp (3PH @480/600 V)
Voltage rating
240V
Product Category
Watertight
Special features
w/ window
Feature: 400A amperage rating provides capability for large motor loads and high-demand panels, reducing the need for multiple smaller switches and simplifying control architecture. Business impact: fewer components, faster commissioning, and lower downtime during maintenance windows. Application: main disconnects for production lines and pump skids where motor starting surges are common. The result is improved line uptime and predictable protection in demanding environments. Feature: Three-pole, four-wire, fusible with neutral configuration enables precise fault isolation and safe neutral return, simplifying wiring and coordination with downstream protection devices. Business impact: enhanced safety margins, easier compliance with prevailing electrical codes, and reduced fault propagation. Application: industrial feeders feeding multiple motors and loads in a single location, improving protection coordination. Feature: NEMA 4X enclosure with 304 stainless steel construction delivers corrosion resistance and washdown compatibility. Business impact: lower maintenance costs, longer service life in harsh environments, and less risk of enclosure failure. Application: food & beverage, water/wastewater, chemical processing, and outdoor installations where moisture and particulates are present. Feature: 240V voltage rating with HP capacity of up to 250/350 hp (3PH @480/600V) provides versatile motor control across facilities and line configurations. Business impact: flexibility to support various motor sizes without swapping components, reducing spare parts inventory. Application: mixed fleets of motors across a single facility, enabling standardization on a single switch for multiple lines. Feature: Enclosure window (special feature) enables quick fuse-status checks without opening the door, shortening maintenance windows. Business impact: faster diagnostics, reduced exposure to energized parts, and improved maintenance workflow. Application: routine inspections and predictive maintenance programs where fuse status visibility is advantageous. Feature: UL Listed certification and Eaton warranty (25-000 policy) deliver assurance of safety compliance and post-sale support, reducing risk for procurement and engineering teams. Business impact: improved supplier confidence, faster approval cycles, and clearer service expectations. Application: enterprise-wide approvals and long-term asset management across plant networks.

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FAQs

The unit has a footprint defined by its enclosure: width 72.46 in, height 24.32 in, and depth 16.41 in. It’s a three-pole, four-wire device designed for 240V systems with high motor horsepower (up to 350 hp at 480/600V). Ensure adequate clearance for maintenance access and door operation, and verify compatibility with downstream protection devices and the Class H fuse provision.
The DD325NWKW is rated for 400A with max horsepower of 250 hp (at 3PH 480V) and 350 hp (at 3PH 600V). It is a fusible with neutral configuration, three-pole, four-wire, and operates at 240V. This combination supports high-demand motor applications while maintaining safe fault isolation.
Yes. The enclosure is NEMA 4X and constructed from 304 stainless steel, providing excellent washdown resistance and corrosion protection, making it suitable for food & beverage, water/wastewater, and other harsh environments.
The DD325NWKW is UL Listed, ensuring compliance with established electrical safety standards. In addition, its NEMA 4X enclosure rating supports protection against moisture and particulates in challenging environments.
Eaton provides a warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever comes first. The robust 304 stainless steel, long-term protection, and minimal maintenance requirements contribute to lower lifecycle costs and reduced downtime.