Eaton MV155F2DCX125E Fuse - E-rated, 15.5 kV
Part Number: MV155F2DCX125E
Quick Summary
MV155F2DCX125E Eaton fuse provides reliable overcurrent protection for medium-voltage switchgear and motor circuits. Engineers often struggle with selecting fuses that balance fast fault interruption with minimal let-through energy. This E-rated fuse delivers current-limiting performance and a robust 50 kAIC interrupt rating at 15.5 kV, helping protect downstream equipment and reduce fault damage. Certifications include ANSI with a class E designation, underscoring suitability for regulated applications. In practice, this fuse supports compliant installations while delivering consistent protection in electrical protection and circuit control environments, offering installation compatibility with ferrule-end connections and a proven track record in MV distribution and MCCs.
Product Information
Extended Description
MV155F2DCX125E Eaton: Eaton Bussmann series MV055 E-Rated medium voltage fuse, Current limiting, 125A, 50 kAIC Symmetrical Maximum interrupt rating, E class, Silver ribbon element, Fiberglass tube, 2 barrels, 0.75 in diameter, 21.7 in length
Product Name
Eaton Bussmann series MV155F E-rated fuse
Catalog Number
MV155F2DCX125E
UPC
051712552868
Product Length/Depth
0.75 in
Product Height
23 in
Product Width
0.75 in
Product Weight
24 lb
Warranty
Not Applicable
Compliances
Contact factory
Certifications
ANSI
Amperage Rating
125 A
Interrupt rating
50 kAIC
Voltage rating
15.5 kV
Material
Fiberglass tube
Packaging type
Standard
Barrels
2
Class
Class E
Connection
Ferrule end x ferrule end
Element
Silver ribbon
Fuse indicator
Non Indicating
Bussmann series 2018 full line catalog no. 1007, section 7 - medium voltage fuses
Bussmann series 2018 full line catalog no. 1007, section 7 - medium voltage fuses
Bussmann series 2018 full line catalog no. 1007, section 7 - medium voltage fuses
Bussmann series Fuseology
Eaton Specification Sheet - MV155F2DCX125E
Feature → Business Impact → Application: 125 A amperage rating provides targeted protection for medium-voltage feeders, reducing nuisance outages while maintaining reliability in motor control centers. This directly improves uptime and reduces maintenance costs in industrial plants. Feature → Current-limiting design delivers reduced fault energy to downstream equipment, limiting damage to bus bars, transformers, and switchgear, which translates to lower replacement rates and faster recovery after faults in MV distribution systems. Feature → 15.5 kV voltage rating enables safe integration with higher-voltage feeders, enabling standardization across MV networks and simplifying procurement for multi-panel installations. Feature → 50 kAIC interrupt rating ensures strong short-circuit protection, decreasing the likelihood of cascade failures during faults and safeguarding critical processes in manufacturing lines. Feature → Ferrule-end x ferrule-end ferrule connections simplify field mounting and alignment, improving installation speed and reducing torque-related risks in new builds or retrofit projects. Feature → Silver ribbon element and fiberglass tube construction offer thermal stability and longevity, supporting longer service intervals in high-temperature environments typical of industrial facilities. Feature → Class E, non-indicating design reduces maintenance complexity while delivering dependable protection in electrical protection and circuit control applications, aligning with compliance expectations and job-site safety standards. Feature → Two-barrel arrangement supports compact, modular installation within fuse racks and MCCs, enabling scalable protection for growing electrical systems and easier cross-referencing in maintenance planning. Feature → Industry documentation and compatibility with Bussmann series catalogs and datasheets provide engineers with trusted references for verification, operator training, and compliance reporting, helping teams meet internal and external audit demands.
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FAQs
Yes. The MV155F2DCX125E uses ferrule-end x ferrule-end connections and a two-barrel design, which aligns with common Bussmann series mounting patterns and MCC configurations. This simplifies field installation, minimizes misalignment risk, and supports straightforward retrofits in existing panels.
The fuse is designed with current-limiting behavior, a 125 A rating, and a 50 kAIC interrupt rating at 15.5 kV. This combination protects downstream equipment from high-energy faults while maintaining selectivity, reducing unnecessary shutdowns and extending the life of switchgear and motor feeders.
Key specs include amperage rating (125 A), voltage rating (15.5 kV), and interrupt rating (50 kAIC). These determine the protection level, fault energy, and compatibility with your MV distribution panels and motor control centers. Always verify the catalog number MV155F2DCX125E against your system’s protection scheme.
This fuse carries ANSI certification and is classified as Class E. While other compliances are listed as factory-specific, these certifications support compliance with common U.S. electrical protection standards and facilitate audit-ready documentation for regulated environments.
Leverage ferrule-end connections for quick, secure mounting, and rely on the current-limiting feature to reduce fault energy, which lowers damage risk and maintenance costs. For ROI, standardize on a single MV fuse family across panels to streamline stocking, training, and spare-part inventories.