Eaton DH225NDKV Heavy Duty Fusible Safety Switch - UL Listed
Part Number: DH225NDKV
Quick Summary
Introducing the Eaton heavy duty fusible safety switch for reliable isolation in industrial power distributions. Maintenance teams struggle with unsafe isolation, bulky access, and inconsistent fault protection in demanding environments. UL Listed and NEC 230.62 compliant barriers, plus a NEMA 12/3R enclosure, deliver code-compliant safety and weather resistance. Designed for panel builders and maintenance teams, it simplifies installation, reduces downtime, and supports robust 400 A distribution in industrial protection applications. This combination of features supports faster commissioning and long-term cost savings. With durable galvanised enclosure and enhanced blade visibility, field techs confirm status at a glance. Its compatibility with standard wiring and fusing schemes minimizes change management during upgrades.
Product Information
Extended Description
DH225NDKV Eaton: Eaton Enhanced visible blade single-throw safety switch, Enhanced visible blade, 400 A, NEMA 12/3R, 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
DH225NDKV
UPC
786685972947
Product Length/Depth
65.5 in
Product Height
10.5 in
Product Width
25.5 in
Product Weight
120 lb
Compliances
NEC 230.62 (C) Compliant Barrier
Certifications
UL Listed
Catalog Notes
Heavy Duty Safety Switch (HDSS)
Enclosure
NEMA 12, NEMA 3R
Enclosure material
Painted galvanized 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
400A
HP rating - max
50, 125, 50 hp (3PH @ Std fuse/time delay/250 Vdc)
NEMA rating
NEMA 12/3R
Voltage rating
240V
High amperage capability is delivered by a 400 A rating at 240 V three-phase, enabling safe isolation of heavy feeders and reducing the need for cascading protective devices. The result is simplified panel layouts, lower installation costs, and reliable fault-clearance performance across demanding lines. The rugged NEMA 12, NEMA 3R enclosure, painted galvanized steel, provides environmental protection against dust, moisture, and incidental washdowns, minimizing corrosion risks and maintenance cycles in factory environments. The fuse configuration is cartridge-based with a neutral, supporting protective coordination and predictable trip characteristics while maintaining compatibility with common fusing schemes, which reduces spare parts inventories and simplifies engineering documentation. Enhanced visible blade design allows quick status checks, lowering commissioning time and operator risk during maintenance windows. All of this is complemented by UL Listed and NEC barrier compliance, ensuring audits and approvals proceed with fewer delays. Conductor sizes accommodate a wide range of upstream wiring, including (2)#1/0–(2)300 kcmil Cu/Al or (1)#1/0–(1)750 kcmil, enabling flexible installation and retrofit options. This HDSS delivers a durable, code-compliant solution that scales with modern automation projects and supports long-term total cost of ownership reductions.
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FAQs
The DH225NDKV is designed for common three-phase panels and control enclosures. It mounts in standard footprint switchgear, supports 2-pole operation with a neutral, and accepts typical conduit entries. Electrical clearances, torque specs for the cartridge fuses, and compatible conductor sizes (@ up to 750 kcmil Cu/Al per spec) simplify retrofits and minimize field modifications.
Key specs include a 400 A amperage rating at 240 V, three-phase operation, a two-pole configuration with a neutral, fusible with cartridge fuses, and a NEMA 12/3R enclosure. It is UL Listed and designed for rugged industrial use, aligning with NEC 230.62 barrier requirements for safe and compliant installations.
Yes. It supports significant motor loads with 50/125 hp ratings (3PH at standard fuse/time delay/250 Vdc) and 400 A capacity, making it suitable for main feeders and motor control centers where reliable isolation and safe startup/shutdown are critical. The durable enclosure and enhanced blade visibility aid commissioning and ongoing maintenance in production environments.
The unit is UL Listed and features NEC barrier compliance along with a NEMA 12/3R enclosure, supporting adherence to code requirements and industry standards. This combination accelerates audits, reduces non-compliance risk, and simplifies the integration of the safety switch into modern electrical protective schemes.
Investing in the DH225NDKV yields lower maintenance downtime due to its visible blade status and robust enclosure, reducing misoperation and inspection time. The 400 A rating with compatible fusing cuts down on upstream device counts, while UL/NEMA certifications streamline approvals. Over time, this translates into faster uptime, fewer spare parts, and a lower total cost of ownership.