Fuses - Electric Vehicle

500 Vdc battery power and auxiliary fuses up to 400 A

Eaton’s Bussmann series Electric Vehicle (EV) full range fuses for vehicle systems up to 500 Vdc

20, 25 and 30mm diameter fuses from 50 to 400 amps protect high power battery charging and management systems.

10x38mm ferrule, bolt-on or PCB terminal fuses from 20 to 50 amps protect auxiliary electrical systems.

See expanding lists below for features, benefits and more information.

Power fuse data sheet no. 10563

Auxiliary fuse data sheet no. 10564

Five factors to consider when selecting overcurrent protective devices for electric vehicle systems no. 10782  

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  • 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)

    Power fuse data sheet no. 10563

  • 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

    Auxiliary fuse data sheet no. 10564

EV20, EV25 and EV30 battery fuses, 50 to 400 amps

Catalog no.

Amp
Average @ 20 kA/500 Vdc*

Power loss (W) @ 50%**
Melting I2t Clearing I2t
20 mm diameter case
EV20-50  50 368 746 1.19
EV20-60  60 529 1074 1.43
EV20-70  70 720 1462 1.67
EV20-80  80 910 2200 1.9
EV20-100  100 1470 2983 2.38
EV20-125  125 1384 4114 3.12
EV20-150  150 1993 5924 3.75
25 mm diameter case
EV25-100  100 1043 2317 3
EV25-125  125 1630 3620 3.75
EV25-150  150 1618 5499 4.5
EV25-175  175 2202 7485 5.25
EV25-200  200 3398 10,220 6
EV25-225  225 4300 12,934 6.97
EV25-250  250 5309 15,968 7.75
30 mm diameter case
EV30-200  200 3211 8665 6.74
EV30-225  225 4064 10,967 7.58
EV30-250  250 5017 13,539 8.42
EV30-300  300 7224 19,496 10.11
EV30-350  350 9833 26,536 11.79
EV30-400  400 12,843 34,660 13.47
* For system parameters below 500 Vdc and 20 kA, see clearing I2t correction factors in data sheet no. 10563.
** 50 percent of fuse label amp rating tested at 23°C ± 2°C.
EV10 auxiliary fuses, 5 to 50 amps
Catalog no. Amps Average @ 20 kA/500 Vdc Power loss (W) @ 50%*
Ferrule Axial bolt-on Flush bolt-on PCB solder Melting I2t Clearing I2t
EV10-20 EV10-20-B EV10-20-T EV10-20-1P 20 761 1483 0.49
EV10-30 EV10-30-B EV10-30-T EV10-30-1P 30 1150 2095 1.10
EV10-40 EV10-40-B EV10-40-T EV10-40-1P 40 1720 3568 1.96
EV10-50 EV10-50-B EV10-50-T EV10-50-1P 50 2740 5073 3.06
* 50 percent of fuse label amp rating tested at 23°C ± 2°C.