Eaton DH326NDK Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH326NDK
Quick Summary
DH326NDK is a heavy duty fusible safety switch that provides reliable electrical isolation for industrial motor circuits and control panels. Operators and maintenance teams often grapple with unexpected outages and unsafe power removal; this disconnect helps minimize downtime and risk. UL Listed protection paired with a NEMA 12/3R enclosure and a painted galvanized steel chassis delivers rugged performance in dusty, wet, or harsh environments. With three-pole, four-wire configuration, 240V operation, and Class H fuse provision, it supports high-HP motors while simplifying installation and service across plant floors. Design integrity and Eaton warranty help sustain long-term reliability and predictable maintenance costs.
Product Information
Extended Description
DH326NDK Eaton: Eaton Enhanced visible blade single-throw safety switch, 600 A, NEMA 12/3R, Painted galvanized steel, Class H, Neutral, Three-pole, Four-wire, 240 V, Max Hp: 75, 200 hp (3PH @Std, TD)), (1)#2-(1)600 kcmil and (1)#1/0-(1)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH326NDK
UPC
782113207506
Product Length/Depth
12.75 in
Product Height
63 in
Product Width
23 in
Product Weight
163 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 class provision
Class H
Fuse configuration
Fusible with neutral
Number Of Poles
Three-pole
Number of wires
4
Type
Heavy duty fusible safety switch
Amperage Rating
600A
HP rating - max
75, 200 hp (3PH @Std, TD))
NEMA rating
NEMA 12/3R
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
600A amperage rating directly protects large-motor feeders and demanding loads, reducing the need for oversized, costly disconnects. This translates to safer, more predictable fault clearance and faster maintenance cycles in industrial plants. NEMA 12/3R enclosure delivers dust-tight, splash-resistant protection that improves reliability on factory floors and outdoor installations. With painted galvanized steel, it resists corrosion in challenging environments, helping lower lifecycle costs. Three-pole, four-wire configuration with a neutral simplifies wiring for three-phase systems and motor-control panels, speeding up installation and facilitating future expansion. Class H fuse provision provides high interrupting capacity, protecting downstream equipment and reducing arc flash exposure during fuse changes. UL Listed certification adds confidence during audits, while the rugged enclosure supports reliable service in both indoor and harsh environments. Compatibility with existing Eaton protection devices helps reduce spare parts inventories and maintenance costs.
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FAQs
For DH326NDK installations, ensure a clean mounting surface with adequate clearance for wiring access. Use the three-pole, four-wire configuration with a neutral, and route conductors to match the 240V, 600A rating. Verify enclosure rating for your environment (NEMA 12/3R) and secure the unit to compatible mounting provisions on panels or switchgear. Keep neutral terminations accessible and observe proper torque specs on all terminations to maintain UL Listed compliance.
DH326NDK is ideal for service disconnects, motor control centers, and industrial control panels where large three-phase motors require reliable isolation. Its 600A rating supports high-current feeders, while the NEMA 12/3R enclosure protects against dust and moisture in manufacturing floors, warehouses, and outdoor sites under moderate exposure conditions.
The DH326NDK is UL Listed, signaling compliance with recognized safety standards. It features a NEMA 12/3R enclosure rating for environmental protection, and a painted galvanized steel housing suitable for challenging conditions. These features support regulatory audits and ongoing compliance in industrial facilities.
Regular maintenance should include fuse replacement with Class H fuses as needed and inspection of neutral connections. Check enclosure integrity for signs of corrosion or moisture ingress and verify mounting hardware is secure. Schedule periodic testing of the disconnect in live-panel environments and maintain a spare-fuse inventory aligned with the 600A rating to minimize downtime during maintenance.
The DH326NDK provides robust isolation during faults or maintenance, reducing the risk of arc flash and uncontrolled power loss. Its rugged enclosure and UL Listed compliance support safer, more predictable shutdowns, while the high-current rating and compatible fuse configuration help protect downstream equipment, enabling faster fault clearance and minimized unplanned downtime.