Eaton DH227NPK Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH227NPK
Quick Summary
Eaton DH227NPK is a heavy-duty fusible safety switch for high-demand industrial motor control applications. For engineers facing downtime and compliance pressure, a rugged disconnect reduces repair time and unplanned outages. It carries UL Listed certification and a NEMA 4 enclosure, with a two-pole, three-wire configuration and cartridge fuse provision for safe field wiring in harsh environments. This switch is rated for 240V three-phase service and supports up to 250 hp under standard fuse/time-delay conditions, delivering scalable protection for large motors. Paired with Eaton support, it streamlines procurement, installation, and ongoing maintenance in rugged facilities.
Product Information
Extended Description
DH227NPK Eaton: Eaton Heavy duty single-throw fused safety switch, Enhanced visible blade, 800 A, NEMA 4, Painted steel, Cartridge, Two-pole, Three-wire, 240 V, Max Hp: 100, 250 hp (3PH @ Std fuse/time delay), (4)#1/0-(4)750 kcmil Cu/Al
Product Name
Eaton heavy duty fusible safety switch
Catalog Number
DH227NPK
UPC
782114371190
Product Length/Depth
71.75 in
Product Height
14.25 in
Product Width
25.38 in
Product Weight
170 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
3-Phase hp ratings shown are grounded B phase ratings; UL listed
Enclosure
NEMA 4
Enclosure material
Painted steel
Fuse class provision
Cartridge
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 4
Voltage rating
240V
Product Category
Heavy Duty, Fusible with neutral
800A amperage rating and horsepower range enable robust motor protection for large drives and conveyors on heavy-duty production lines. This 3-phase, 240V capability supports scalable protection without needing to reconfigure existing power distribution, reducing equipment risk and downtime in manufacturing and mining environments. The NEMA 4 painted steel enclosure provides weatherproof and dust-tight protection, minimizing corrosion exposure and maintenance cycles in outdoor substations or wash-down areas. Cartridge fuse with neutral configuration improves selective coordination and simplifies field wiring, allowing safer maintenance and quicker fuse replacements in busy industrial plants. The two-pole, three-wire design and enhanced visible blade enable quick status checks and safer operation during routine servicing and fault isolation. With dimensions and weight suitable for panel and rack planning, installation becomes straightforward in space-constrained switchgear. UL Listed certification and Eaton support add compliance assurance and predictable lifecycle costs.
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FAQs
The DH227NPK uses a two-pole, three-wire configuration with a cartridge fuse and neutral, designed for 240V three-phase service. Plan for a robust enclosure in a NEMA 4 environment and allocate space for the 71.75 inch length, 25.38 inch width, and 14.25 inch height, with an estimated 170 lb weight to ensure proper mounting hardware and service clearances.
The switch supports up to 250 hp for 3-phase systems when using standard fuse/time-delay protection. For general use, it also accommodates up to 100 hp ratings depending on the fuse configuration. Implementing the correct time-delay fuse ensures coordinated protection for large motor loads without nuisance tripping.
Industries such as manufacturing, mining, chemical processing, and water treatment benefit from the DH227NPK due to its high current rating, rugged NEMA 4 enclosure, and UL Listed certification. It is particularly suited for large motor control centers, conveyors, and process lines requiring reliable, code-compliant disconnects with straightforward maintenance.
The DH227NPK is UL Listed and features a NEMA 4 enclosure, providing weatherproof and dust-tight protection suitable for harsh industrial environments. These certifications support compliance with safety standards while enabling installation in outdoor or wash-down areas without additional enclosure upgrades.
Maintenance value comes from durable painted steel enclosure, cartridge fuse protection with neutral for selective coordination, and a simple two-pole design that minimizes field wiring complexity. The robust construction and UL/NEMA ratings translate to longer service intervals, predictable spare-part compatibility, and lower total cost of ownership over the motor protection lifecycle.