Eaton heavy duty fusible safety switch DH227NDK - UL Listed
Part Number: DH227NDK
Quick Summary
Eaton heavy duty fusible safety switch DH227NDK provides safe, switchgear-grade protection for industrial power distribution. Maintenance teams often face downtime and safety concerns when wiring large feeders, but this unit supports fast, reliable installation with clear barrier layouts and rugged durability. UL Listed, NEC 230.62 (C) compliant barrier, and a NEMA 12 enclosure help you meet stringent standards in harsh environments. Designed for 800A, two-pole service with 240V AC and 250V DC ratings, it delivers robust protection while lowering total cost of ownership through improved serviceability.
Product Information
Extended Description
DH227NDK Eaton: 800 AMP, 2P, HEAVY DUTY SAFETY SWITCH, FUSIBLE W/ NEUTRAL, 240 VAC, 250 VDC, NEMA 12
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH227NDK
UPC
782113589787
Product Length/Depth
57.5 in
Product Height
12.38 in
Product Width
27.5 in
Product Weight
160 lb
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
Fuse configuration
Fusible with neutral
Number Of Poles
Two-pole
Type
HEAVY DUTY FUSIBLE SAFETY SWITCH
Amperage Rating
800A
NEMA rating
NEMA 12/3R
Voltage rating
240V
The DH227NDK is an 800A, two-pole fusible safety switch engineered for reliable protection of heavy motorized loads in mid- to large-scale industrial processes. Its fusible-with-neutral configuration enables precise fault isolation, straightforward fuse replacement, and minimal arc-flash exposure during routine maintenance. This arrangement supports effective coordination with upstream protective devices, reducing nuisance trips and improving uptime in critical production lines. With 240V AC and 250V DC ratings, the switch accommodates both standard motor circuits and DC-powered equipment within a single protective device. This voltage versatility simplifies system architecture, lowers spare parts inventory, and speeds up deployment across mixed-control environments. Engineers can count on predictable performance across load profiles, ensuring safe, compliant disconnects under peak demand. Housed in a rugged NEMA 12 enclosure, the DH227NDK provides durable protection against dust, moisture, and incidental impacts in demanding environments. The enclosure design, combined with clear labeling and barrier access, facilitates safe servicing and reduces the likelihood of installation errors. Its substantial footprint—57.5 in depth, 27.5 in width, and 12.38 in height—supports stable mounting in electrical rooms. UL Listed certification confirms compliance with global safety standards, enhancing vendor confidence and streamlining regulatory audits. NEC 230.62 (C) compliant barrier mitigates arc-flash risk during disconnection, safeguarding technicians during maintenance. Additional compatibility with NEMA 12/3R environments makes this switch suitable for a wide range of industrial installations. From a total cost of ownership perspective, long service life and straightforward fuse changes reduce downtime and maintenance expenses. The 2P design minimizes enclosure footprint while delivering robust high-current protection, easing retrofits and spare-part planning. In practice, users experience faster commissioning, easier diagnostics, and improved reliability across motor control centers and packaging lines.
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FAQs
Installing the DH227NDK requires proper enclosure mounting, adequate clearance for wiring, and correct integration with the bus and upstream protection. Verify the 57.5 in depth, 27.5 in width, and 12.38 in height footprint fits your electrical room. Use the fusible-with-neutral configuration to ensure correct fault isolation and plan for 240V AC and 250V DC wiring, with attention to termination torque per manufacturer guidelines.
With an 800A amperage rating and a rugged two-pole design, the DH227NDK delivers reliable protection for heavy motor loads and process equipment. It supports 240V AC operation and 250V DC compatibility, enabling safe disconnects under peak demand. UL Listed certification and NEC barrier compliance add confidence in performance during demanding shifts.
Yes, the unit is built around a NEMA 12 enclosure that resists dust and moisture, suitable for challenging plants and outdoor-adjacent spaces. The NEC barrier reduces arc-flash exposure while servicing, and the UL Listing confirms compliance with safety standards. The design also supports straightforward maintenance and durable operation across varied temperatures.
Key certifications include UL Listed status and NEC 230.62 (C) compliant barrier, ensuring safety and regulatory compliance. The enclosure is NEMA 12 rated, and the device is compatible with NEMA 12/3R environments. Catalog notes clarify that three-phase horsepower ratings are grounded on B phase, which affects compatibility with certain motor controllers.
Investing in the DH227NDK reduces downtime through rapid fuse replacement and reliable fault isolation, lowering maintenance costs over the asset lifecycle. The 800A two-pole design minimizes panel footprint while delivering robust protection, simplifying spare parts and retrofits. In practice, you gain improved reliability, faster commissioning, and safer, compliant operation in dairy, packaging, or manufacturing lines.