COVID-19 Status: We are OPEN. All phone, website and email orders are being despatched as usual. Counter sales are CLOSED to comply with Victorian Government Stage 4 Restrictions. Read our full COVID-19 update.
We sell ultra rapid 21 x 51mm fuses which are designed to open a circuit quickly to protect sensitive electronic components in the circuit. Once the fuse is blown, the fuse needs to be replaced. In the case of replacement, be sure to replace with the same fuse as a regular fuse will not be quick enough to protect sensitive components.