Miniature Fuse Buying Guide

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Miniature fuses are cylindrical fuses. Either glass or ceramic.Fast blow or slow blow with some being a medium time delay. Sometimes they are glass fuses filled with sand. Most miniature fuses are 250VAC. Some are 500VAC or 125VAC.

The most common sizes for miniature fuses are:

  • 5 x 20mm
  • 6 x 32mm  (6.3 x 32mm)

Other available sizes are: 

  • 5 x 25mm
  • 6 x 25mm (6.3 x 25.4mm) Plug fuses
  • 6 x 22mm (6.3 x 22mm) 7AG
  • 5 x 30mm
  • 4 x 15mm (4.5 x 15mm) 41NM

Common fuse size guide:

  • 1AG- 6 x 16mm  (6.3 x 16mm)
  • 2AG- 6 x 22mm  (this size is also called 7AG)
  • 3AG- 6 x 32mm
  • 5AG- 10 x 38mm  (our 10x38mm fuses are listed under "cartridge fuses" )
  • 7AG- 6 x 22mm (6.3 x 22mm) (this size can also be called 2AG)
  • 8AG- 6 x 25mm  (6.3 x 25.4mm)
  • M205- 5 x 20mm
  • Plug fuse- 6 x 25mm  (6.3 x 25.4mm)
  • M525- 5 x 25mm
  • M58- 4.8 x 15.8mm