How to Buy Fuses

When purchasing a replacement fuse, the easiest way to get what you need is to bring the old fuse with you.

How To Buy Fuses

Fuses are marked with identifying information such as voltage ratings, current ratings and time delay ratings. If you do not have the old fuse then the next best option is to refer to the owner's manual or specification sheet for a parts list. If the fuse is not listed there then you may have to call the manufacturer for the information.

Examine the fuse for the manufacturer's name and part number. This information can usually be found on the body of the fuse, engraved on the metal cap or tags of the fuse, listed in a product manual or spec sheet or on the access panel or printed circuit board. You may need a magnifying glass. Jot down any information that you find.

Take note of additional physical characteristics of the fuse. This is necessary if you are ordering online or speaking to someone on the phone to see if they carry the fuse. Note the body style of the fuse, whether the fuse is glass or ceramic and the dimensions of the fuse.

Check the current rating of the fuse. This will be shown in amps (A) or milliamps (mA).

Check the voltage rating of the fuse. This will be shown in volts (V) or kilovolts (kV).

Determine the type of voltage going through the fuse. It will either be AC or DC.

Things You Will Need

  • Old fuse
  • Magnifying glass
  • Manual or specification sheet
  • Paper and pencil

About the Author

Paula M. Ezop’s inspirational column "Following the Spiritual Soul" appeared in "Oconee Today," a Scripps Howard publication. She has published her first book, "SPIRITUALITY for Mommies," and her children's chapter book, "The Adventures of Penelope Star," will be published by Wiggles Press. Ezop has a Bachelor of Arts degree from Northeastern Illinois University and has been writing for 10 years.