Eaton DH227NDKW Heavy Duty Safety Switch - UL Listed
Part Number: DH227NDKW
Quick Summary
The Eaton DH227NDKW heavy duty fusible safety switch provides reliable isolation for industrial power circuits. In demanding plants, downtime and miswiring risk are costly, so this unit offers rugged NEMA 1 protection with a windowed, visible-blade design for quick verification. UL Listed certification underlines safety compliance, while the combination of a heavy-duty enclosure, Class L fuse provision, and 240 V operation supports safe, compliant switching in harsh environments. With an 800 A rating and compatibility for up to 250 hp (three-phase) at standard fuse/time-delay, this model delivers dependable control-disconnect performance. For project teams and procurement, it combines straightforward installation with a solid warranty framework and access to Eaton’s support ecosystem, aligning with maintenance and safety objectives.
Product Information
Extended Description
DH227NDKW Eaton: Eaton Heavy duty single-throw fused safety switch, 800 A, NEMA 1, Painted steel, Class L, Two-pole, Three-wire, 240 V, Max Hp: 100, 250 hp (3PH @ Std fuse/time delay), (4)#1/0-(4)750 kcmil Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH227NDKW
UPC
786680181672
Product Length/Depth
57.5 in
Product Height
12.38 in
Product Width
27.5 in
Product Weight
160 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 L
Fuse configuration
Fusible with neutral
Number Of Poles
Two-pole
Number of wires
3
Type
Heavy duty fusible safety switch
Amperage Rating
800A
HP rating - max
100, 250 hp (3PH @ Std fuse/time delay)
NEMA rating
NEMA 12/3R
Voltage - max
600 V
Voltage rating
240V
Application
Heavy commercial and industrial
Series
K
Eaton Specification Sheet - DH227NDKW
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The 800 A amperage rating and 240 V operation enable reliable heavy-duty motor disconnects in large motors and feeders, reducing fuse-blow incidents and enhancing line protection in manufacturing lines. This translates to measurable uptime improvements and safer disconnections during maintenance tasks in high-demand industrial environments. Feature → Business Impact → Application: The NEMA 1 painted steel enclosure provides rugged indoor protection against dust and incidental impacts, improving enclosure longevity in heavy commercial settings and simplifying retrofits in existing control rooms. Feature → Business Impact → Application: Fusible with neutral configuration and Class L fuse protection offer precise current limitation and selectivity for complex motor circuits, supporting up to 250 hp (3PH @ std fuse/time delay) and reducing nuisance tripping during start-up. Feature → Business Impact → Application: Windowed HDSS with visible blade enables quick visual confirmation of switch status, enhancing installation integrity and safe operations during routine maintenance in energy-heavy facilities. Feature → Business Impact → Application: Three-wire, two-pole design simplifies wiring schemes and compatibility with standard control schematics, accelerating panel assembly and reducing commissioning time in industrial plants. Feature → Business Impact → Application: The included service and warranty terms from Eaton—one year from installation or 18 months from shipment—provide long-term support, lowering lifecycle risk and promoting total cost of ownership savings for heavy-duty switching applications.
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FAQs
Install the DH227NDKW by mounting it in a suitable indoor control panel with a NEMA 1 enclosure. Use the two-pole, three-wire configuration and connect conductors within the listed ranges (up to 4 conductors including neutral). Ensure correct alignment of the windowed blade for status visibility and follow the manufacturer's wiring diagram to maintain Class L fuse protection and UL safety compliance.
Key specs include an 800 A amperage rating, 240 V nominal voltage, and capability for up to 250 hp at standard fuse/time delay for three-phase circuits. The switch uses a fusible with neutral configuration, supports 3 wires, and is housed in a NEMA 1 painted steel enclosure suitable for heavy commercial and industrial applications.
Yes. It is designed as a heavy-duty motor disconnect with an 800 A rating, two-pole, three-wire configuration, and a 240 V operating environment. The unit supports large conductor terminations and up to 250 hp for three-phase motors, making it well-suited for demanding industrial processes and equipment protection.
The DH227NDKW is UL Listed, signifying compliance with recognized safety standards. It features a rugged NEMA 1 enclosure for indoor protection and uses Class L fuse provision with a window and visible blade for safe operation and verifiable status during maintenance.
Warranty terms follow Eaton Selling Policy 25-000: one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. This provides assurance around performance, spares availability, and access to Eaton’s technical support for installation, maintenance, and lifecycle services.