Eaton DH225NDKW Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH225NDKW
Quick Summary
The Eaton DH225NDKW heavy duty fusible safety switch isolates power safely for industrial circuits up to 400 A. Engineers often face downtime and safety concerns during fuse replacement and maintenance, so a dependable, easy-to-access solution is critical. UL Listed certification ensures compliance, while the enclosure’s NEMA 1 protection and the NEMA 12/3R rating provide resilience in varied indoor environments. With 240 V operation and compatibility with standard Eaton HDSS accessories, this unit delivers robust protection and straightforward field service, helping facilities minimize downtime and lifecycle costs while maintaining rigorous safety standards.
Product Information
Extended Description
DH225NDKW Eaton: Eaton Heavy duty single-throw fused safety switch, 400 A, NEMA 1, Painted steel, Fusible with neutral, Two-pole, Three-wire, 240 V, Max Hp: 50, 125, 50 hp (3PH @ Std fuse/time delay/250 Vdc), (2)#1/0-(2)300 kcmil or (1)#1/0-(1)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH225NDKW
UPC
786680181573
Product Length/Depth
45.5 in
Product Height
10.25 in
Product Width
24.38 in
Product Weight
124 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
Heavy Duty Safety Switch (HDSS). Window & Visible Blade
Enclosure
NEMA 1
Enclosure material
Painted steel
Fuse class provision
Class H
Fuse configuration
Fusible with neutral
Number Of Poles
Two-pole
Number of wires
3
Type
Heavy duty fusible safety switch
Amperage Rating
400A
HP rating - max
50, 125, 50 hp (3PH @ Std fuse/time delay/250 Vdc)
NEMA rating
NEMA 12/3R
Voltage - max
600 V
Voltage rating
240V
Application
Heavy commercial and industrial
Series
K
Feature 1: 400 A amperage rating → Business Impact: Enables handling of high-demand motor feeders and distribution circuits with a single switch, reducing the need for multiple smaller devices. Application: Industrial feeders and heavy commercial power paths. Feature 2: Fusible with neutral configuration → Business Impact: Safe fault clearing and neutral reference improve fault management and system reliability. Application: 3-wire power distribution where neutral integrity is required. Feature 3: NEMA 1 enclosure (painted steel) → Business Impact: Durable indoor protection against dust and incidental contact, lowering cabinet maintenance and replacement costs. Application: Indoor control panels in manufacturing facilities. Feature 4: Two-pole, three-wire design → Business Impact: Simplified integration with standard 3-wire circuits, minimizing wiring complexity and installation time. Application: Main/disconnect sections for motors and conveyors. Feature 5: UL Listed with HDSS notes (Window & Visible Blade) → Business Impact: Compliance and quick-status verification reduce commissioning time and operator risk. Application: Routine inspections and safety audits. Feature 6: 240 V operation and high-performance HP rating → Business Impact: Supports diverse motor loads up to 50/125/50 hp at standard fuse/time delay, enabling broader application coverage. Application: Industrial motors and control circuits in heavy commercial environments.
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FAQs
Plan for indoor mounting on a stable, level surface within a NEMA 1 enclosure environment. Ensure clearance for the 45.5 in depth and 24.38 in width, and provide access to the window and visible blade for quick status checks. Use appropriate Eaton HDSS accessories for compliant field wiring and fuse replacement.
Yes. The DH225NDKW is designed as fusible with neutral and uses Class H fuse provisions, supporting two-pole, three-wire configurations. This arrangement simplifies wiring and ensures proper fault clearing for 240 V systems up to 400 A.
The unit carries UL Listed certification, along with a NEMA 1 enclosure and NEMA 12/3R rating for indoor protection in varied environments. These specs support compliance with common industrial electrical safety requirements and help with inspections and audits.
Ideal for heavy commercial and industrial power distribution, including motor feeders and control circuits in manufacturing lines. Its 240 V rating, 400 A capacity, and fusible-with-neutral design make it suitable for applications requiring reliable isolation, safe maintenance, and rapid fuse replacement.
The window and visible blade design enable quick status checks during inspections, reducing downtime. UL Listing ensures ongoing compliance, and the robust enclosure plus HDSS compatibility lowers lifecycle costs by decreasing repair frequency and simplifying field service while maintaining safe operation.