We often get questions on whether or not a particular fuse or other circuit protection device such as Inrush current limiters or Varistors, are polarized or not. The answer is no, fuses and most other circuit protection devices are not polarized.
Below are links to our non-polarized circuit protection devices.
Fuses
Electrical, Specialty Fuses
PTC Resettable Fuses
Thermal Fuses
Inrush Current Limiters (ICL)
Varistors, MOVs
Gas Discharge Tube Arresters (GDT)
Fuse Kits