Eaton DH225FDK Heavy-Duty Fusible Safety Switch - UL Listed
Part Number: DH225FDK
Quick Summary
Eaton DH225FDK heavy-duty fusible safety switch provides reliable circuit protection for industrial power distribution and motor control. In practice, engineers confront space limits, wiring complexity, and downtime during protection upgrades. This unit is UL Listed with NEC 230.62 barrier compliance and a rugged NEMA 12/3R enclosure to withstand dust and moisture on the shop floor. With a 400 A rating and selectable HP options (50/125/50 hp for 3-phase at 250 Vdc), it supports both standard and mission-critical applications. Field-installable neutral options and compatibility with service-entrance configurations help reduce installation time, improve safety, and lower total cost of ownership over the equipment lifecycle.
Product Information
Extended Description
DH225FDK Eaton: Eaton Heavy duty single-throw fused safety switch, Enhanced visible blade, 400 A, NEMA 12/3R, Two-pole, Two-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
DH225FDK
UPC
782113207094
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
Suitable for service entrance use with a neutral or ground lug kit installed. Hp ratings apply only when neutral is field installed and switch is used on a grounded B phase system.
Enclosure
NEMA 12, NEMA 3R
Enclosure material
Painted galvanized steel
Fuse class provision
Class H
Fuse configuration
Fusible without neutral
Number Of Poles
Two-pole
Number of wires
2
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 without neutral
Feature: 400 A amperage rating enables safe handling of large motor loads and feeders. Business Impact: minimizes overload risk, reduces fuse-related downtime, and supports scalable protection for growing installations. Application: heavy-duty feeders in manufacturing lines and pumping stations. Feature: Two-pole, 240 V operation with fusible without neutral configuration. Business Impact: simplifies wiring, reduces panel footprint, and streamlines procurement for standard three-phase systems. Application: control panels and motor starters in moderate voltage environments. Feature: NEMA 12, NEMA 3R enclosure with painted galvanized steel. Business Impact: durable protection against dust and limited moisture, extending equipment life in indoor and semi-outdoor spaces. Application: plant rooms, utility rooms, and process lines. Feature: UL Listed with NEC 230.62 barrier compliance. Business Impact: regulatory alignment supports safe installation, easier audit trails, and faster project sign-offs. Application: facilities requiring formal certification for electrical protection devices. Feature: Class H fuse configuration and fusible without neutral option. Business Impact: flexible protection strategy and reduced inventory of neutral kits; improves selectivity and maintenance planning. Application: critical power circuits and systems requiring precise fault isolation. Feature: Service entrance suitability with neutral or ground lug kit. Business Impact: accelerates commissioning and reduces field modifications; supports safer, compliant installations. Application: service entrances and feeder applications in light to heavy industrial environments.
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FAQs
The DH225FDK is suitable for service entrance use with a neutral or ground lug kit installed. It supports 240 V, two-pole operation and a 400 A rating, with field-installable neutral options. This configuration simplifies integration into building electrical feeds while meeting NEC 230.62 barrier requirements for safe separation between lines and accessibility.
DH225FDK operates as a two-pole, 240 V protection device rated at 400 A. It uses fusible protection without a neutral in standard configuration, with Class H fuses. The unit supports 3-phase HP ratings of 50/125/50 HP at 250 Vdc, enabling appropriate protection for a range of motor loads and drives.
Yes. The enclosure is rated NEMA 12 and NEMA 3R, providing dust and moisture resistance suitable for indoor and semi-exposed locations. Constructed from painted galvanized steel, it delivers robust mechanical protection while maintaining serviceability in typical industrial settings.
The DH225FDK is UL Listed, ensuring compliance with global electrical safety standards. It also aligns with NEC 230.62 barrier requirements, which supports safe service access and fault isolation. Together, these certifications streamline procurement, installation, and regulatory reviews for electrical protection gear in manufacturing and distribution environments.
Key considerations include leveraging service-entrance compatibility with neutral/ground lug kits to shorten commissioning, using the 65.5 in length, 25.5 in width, and 10.5 in height footprint for planning, and noting the 120 lb weight for handling and mounting. The unit’s rugged construction and one-year warranty support reduced downtime, lower maintenance costs, and predictable long-term performance.