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Fuses

Eaton’s Bussmann® series electric vehicle (EV) fuses are tailored protection solutions that feature market-leading compact and high-speed designs, with lifetime durability simulation capabilities. 

Available for 500 - 1000V DC vehicle systems including fuse ratings up to 1000 A, Bussmann EV fuses provide high performing DC protection of drive, auxiliary and battery systems. The fuses are also available as custom solutions for higher voltage and current ratings.

  • Higher voltage rating provides overall system efficiency using smaller, more economical conductors while meeting the needs of higher voltage battery packs
  • Higher interrupting rating protects high capacity battery packs needed for vehicle acceleration and range requirements
  • Up to ten times faster opening under high fault current conditions helps assure reliable protection of circuits and components
  • Requires up to 48% less space than conventional high speed fuses to help reduce space and weight
  • Data logging system marks each fuse with a serial number and date code for traceability of Critical to Quality characteristics
  • To help project the life of the fuse in your application, unique driving profiles and conditions can be simulated to verify proper fuse size and performance under a wide range of driving behaviors
  • Operation as low as 200% overload provides back up protection to the battery management system
  • Can be applied in parallel to realize greater ampacity within sizing guidelines
  • Are available in three case diameters and sizes:
    • 20 mm (50 to 150 amps)
    • 25 mm (100 to 250 amps)
    • 30 mm (200 to 400 amps)
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  • Higher current rating in EVs come along with higher power requirements especially for battery electric vehicles for the demands of faster charging, increased vehicle range, and premium systems.
  • 1000Vdc charging protection fuses enables fast-charging the vehicle via DC/DC fast/charging unit
  • High interrupting rating protects high capacity battery packs with increased power levels.
  • Industry leading simulation of fuse lifetime in both charging and high-demand driving cycles to reduce replacement needs for fused protection.
  • Produced in IATF environment with traceability and technical cleanliness options
  • Products are available in three square body diameters:
    • 43mm (500V, up to 630A; 1000V, up to 350A)
    • 51mm (500V, up to 800A; 1000V, up to 630A)
    • 9mm (500V, up to 900A; 1000V, up to 800A)

 

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  • Compact 10x38 mm size is easily mounted with multiple terminal options
  • Higher voltage rating provides overall system efficiency using smaller, more economical conductors while meeting the needs of higher voltage battery packs
  • Higher interrupting rating protects high capacity battery packs needed for vehicle acceleration and range requirements
  • Operation as low as 135% overload provides full range protection for overload and high fault current conditions
  • Can be selectively coordinated with upstream battery and charging circuit fuses
  • Available with multiple terminations for easy application:
    • 10x38mm ferrule
    • Axial bolt-on
    • Flush bolt-on
    • PCB terminal
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