Glass fuses protect the electronic circuits of machines (control boards, power supplies) from overcurrent: when the current exceeds the rated value, the internal filament breaks, saving the board from more serious damage.

Rating: 500mA and 1A, standard 5x20mm size, sold in packs of 10. The range also includes green and yellow 220V indicator lamps for control panels.

For other electronic spare parts go back to Electronic Spare Parts.

Frequently asked questions

How do I choose the right rating?
It must match the blown original fuse exactly: a different value won't correctly protect the circuit.

Why does the fuse keep blowing?
If it blows repeatedly, the problem isn't the fuse but a fault upstream (board or component) that needs identifying before replacing it again.