Eaton DH226NPKW Heavy Duty Fusible Safety Switch - NEMA 3R
Part Number: DH226NPKW
Quick Summary
Eaton DH226NPKW heavy duty fusible safety switch provides reliable isolation for demanding industrial power systems. Maintenance teams often struggle with safe access and clear blade visibility during outages, and this unit addresses that challenge with a window and visible blade. UL Listed certification, a NEMA 3R enclosure, and HDSS design support code compliance and rugged outdoor use. With a 600 A rating at 240 V and motor protection up to 200 hp (3PH at standard fuse/time delay), it delivers scalable protection while helping minimize downtime and maintenance costs for heavy commercial and industrial applications.
Product Information
Extended Description
DH226NPKW Eaton: Eaton Heavy duty single-throw fused safety switch, 600 A, NEMA 3R, Painted galvanized steel, Class H, Two-pole, Three-wire, 240 V, Max Hp: 75, 200 hp (3PH @ Std fuse/time delay), (1)#2-(1)600 kcmil and (1)#1/0-(1)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH226NPKW
UPC
786680181641
Product Length/Depth
58 in
Product Height
12 in
Product Width
27.5 in
Product Weight
152 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 3R
Enclosure material
Painted galvanized 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
600A
HP rating - max
75, 200 hp (3PH @ Std fuse/time delay)
NEMA rating
NEMA 3R
Voltage - max
600 V
Voltage rating
240V
Application
Heavy commercial and industrial
Series
K
The 600 A amperage rating delivers precise control over high-current circuits, reducing the risk of electrical faults and enabling more reliable startup sequences for large motors. This translates to lower switching losses and improved overall system efficiency in motor control centers and machinery lines. The NEMA 3R enclosure, fabricated from painted galvanized steel, enables outdoor and harsh-environment installation, expanding site placement options while maintaining enclosure integrity and safety. From a maintenance perspective, the window and visible blade provide instantaneous status verification, decreasing outage time and enabling safer lockout/tagout procedures during servicing. Class H fusing supports predictable protection curves for long-time-delay operation, which helps protect feeders and downstream equipment while keeping nuisance trips to a minimum. The fuse configuration is fusible with neutral, two-pole operation, and three-wire connectivity, ensuring compatibility with standard wiring practices and facilitating quick field terminations. This safety switch supports heavy-duty industrial and commercial loads, including motors up to 200 hp at 3-phase, and is designed to integrate smoothly with existing HDSS installations, reducing retrofit costs and deployment risk.
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FAQs
The DH226NPKW is designed for heavy commercial and industrial settings and supports outdoor installation thanks to its NEMA 3R enclosure. Its painted galvanized steel enclosure withstands challenging environments, and the unit’s window plus visible blade allow quick visual status checks during maintenance outages. Typical applications include motor control centers, outdoor substations, and equipment rooms.
Key specs include a 600 A amperage rating, 240 V voltage rating, and a maximum horsepower rating of 75 to 200 hp for three-phase motors with standard fuse/time-delay. It is a two-pole, three-wire device with fusible configuration and neutral, offering reliable protection for medium-to-large industrial drives and heavy equipment.
Yes, the DH226NPKW is UL Listed, indicating compliance with applicable safety standards. The NEMA 3R enclosure rating means the switch is suitable for outdoor or semi-exposed installations, providing rain and corrosion resistance with a rugged protective enclosure ideal for industrial environments.
The window and visible blade design lets technicians confirm switch status at a glance without opening the enclosure, reducing per-visit inspection time and exposure to live components. This enhances safety during lockout/tagout procedures and accelerates fault localization in busy industrial facilities.
The unit is fusible with neutral and supports two-pole operation with three wires. It accommodates conductors sized for heavy-duty service, including options like (1) 600 kcmil aluminum or equivalent-sized copper, facilitating straightforward field wiring and compatibility with standard fusing practices for robust industrial protection.