Eaton DH225NDK Heavy Duty Fusible Safety Switch – UL Listed

Part Number: DH225NDK
Manufacturer
Eaton
Part number
DH225NDK

Quick Summary

The Eaton DH225NDK heavy duty fusible safety switch provides reliable circuit protection for industrial electrical systems in demanding environments. Operators need fast, safe isolation to minimize unplanned downtime and equipment damage, especially during maintenance or fault events. This switch features UL Listed certification, NEC 230.62 compliant barrier design, and a rugged NEMA 12/3R enclosure to withstand dust and moisture. With its two-pole, three-wire configuration and fusible with neutral design, this device supports resilient motor control and power-distribution applications while meeting stringent safety standards. For procurement teams, the DH225NDK adds protective value, reducing risk and enabling compliant installation within standard control panels and electrical rooms.

Product Information

Extended Description

DH225NDK Eaton: Eaton Heavy duty single-throw fused safety switch, Enhanced visible blade, 400 A, NEMA 12/3R, 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 Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH225NDK
UPC
782113207117
Product Length/Depth
65.5 in
Product Height
10.5 in
Product Width
25.5 in
Product Weight
120 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.
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Catalog Notes
3-Phase hp ratings shown are grounded B phase ratings; 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
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 rating
240V
Product Category
Heavy Duty, Fusible with neutral
Feature → Business Impact → Application: Heavy duty fusible with neutral configuration reduces arc exposure during disconnects, enhancing safety and protecting downstream loads in critical motor circuits. This design enables faster, safer stoppages in process lines, lowering downtime and maintenance costs for heavy machinery. Feature → NEMA 12/3R enclosure provides dust and weather resistance suitable for indoor industrial spaces and sheltered outdoor areas, improving reliability in harsh plants. Application: main-disconnect points in manufacturing lines and packaging equipment where robust enclosure protection and visible blade status support quick operator actions. Feature → 400 A amperage rating and 240 V operation enable compatibility with large motor starters and load centers, reducing the need for multiple switches and simplifying panel layouts. Application: motor control centers and process lines requiring high-current protection with straightforward wiring and termination. Feature → UL Listed and NEC compliant barrier design ensures compliance with safety programs and reduces certification overhead, accelerating panel fabrication. Application: system integrators delivering certified control panels for food and beverage, metal fabrication, and material handling industries. Feature → Class H fuse provision and fusible with neutral configuration support safe switching with neutral conductors, enabling proper protection for non-linear loads. Application: protective device selection in high-efficiency drive systems and IEC/UL-aligned motor circuits.

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FAQs

Install the DH225NDK as a two-pole, fusible safety switch with neutral, rated at 400 A and 240 V. Follow NEC 230.62 for barrier and enclosure clearances, mount in a NEMA 12/3R enclosure, and terminate conductors per table values for up to #1/0–750 kcmil copper/aluminum as applicable. Use the Class H fuses specified and verify proper alignment of the enhanced visible blade before operation.
DH225NDK provides 400 A amperage, 240 V voltage, two-pole, three-wire with neutral, and supports up to 50 hp (3PH @ std fuse/time delay/250 Vdc) and up to 125 hp in suitable configurations. These specs enable robust motor starting protection, reduced arcing, and reliable isolation, improving uptime and protecting drives and loads in demanding industrial applications.
Yes. The DH225NDK uses a NEMA 12, NEMA 3R rated enclosure with painted galvanized steel construction, offering dust resistance and indoor/outdoor protection in sheltered areas. This enclosure, combined with UL Listed construction, supports dependable operation in dirty plant floors and workshop environments where robust control housing is required.
The DH225NDK is UL Listed and designed with NEC 230.62 compliant barrier features, plus a NEMA 12/3R enclosure. These certifications simplify regulatory filings, support safer panel integration, and help meet workplace safety mandates for industrial machinery and power distribution systems.
Although initial cost may be higher, the DH225NDK delivers downtime reduction through safer, faster isolation and superior fault containment. Its rugged enclosure and UL-listed design minimize maintenance and compliance risk, extending motor life and reducing nuisance trips. Over time, energy efficiency and improved reliability contribute to a favorable ROI for plant-wide protection upgrades.