Device containing fusible link that protects electrical circuit from over current condition only

Types of Fuses

• Cartridge Fuse
  • Constructed with zinc or alloy fusible element
  • Enclosed in cylindrical tube
  • Element ends attached to metallic contact piece at ends of tube
  • Normally used on circuits rated between 250 volts and 600 volts
  • Maximum continuous current-carrying capacity of 600 amps

• Plug Fuse
  • Consists of zinc or alloy strip
  • Fusible element enclosed in porcelain housing
  • Screw base
  • Normally used on circuits rated at 125V or less to ground