Glass Fuses

Older vehicles, classic cars, and many types of domestic appliances still use the cylindrical glass fuse - a glass-bodied cartridge fuse where the metal element is visible through the transparent tube, allowing easy visual inspection to confirm whether the fuse has blown. At the DIY Hardware Store, our glass fuses range covers the standard sizes used in UK domestic appliances and older automotive applications.

The glass body makes fault diagnosis instantaneous - hold the fuse up to the light, and a blown element is immediately obvious as a broken or blackened wire. This is a practical advantage over ceramic or blade fuses where the element is concealed and a multimeter is needed to confirm a blow. Standard automotive glass fuses are the 3AG and 4AG formats. Domestic appliance fuses use the 20mm and 25mm cartridge sizes. Available in a full range of amperage ratings at the DIY Hardware Store - always replace with the correct rated fuse, never substitute a higher rating to overcome a recurring blown fuse.

  • Transparent glass body for instant visual fault diagnosis
  • Standard for older vehicles and domestic appliances
  • 3AG and 4AG automotive sizes
  • 20mm and 25mm domestic appliance cartridge sizes
  • Full amperage range from 1A to 30A
  • Always replace like-for-like with correct amperage rating