# Fuse with voltage rating , why ?

Discussion in 'Electronic Basics' started by [email protected], Jul 3, 2005.

1. ### Guest

I notice some fuse maker given voltage rating beside current rating
like 1 amp 250 volt & 1 amp 1000 volt, it make no diffrent on the
voltage as long any current reach more than 1 amp fuse will burn.
My explaination is correct ?

2. ### John PopelishGuest

The current rating tells how much current can be passed without
melting. The voltage rating tells how much voltage can be interrupted
once the melt takes place.

3. ### petrus bitbyterGuest

No. Once the fuse melts an arc arises which may not extingish fast enough
when the voltage is too high for the fuse at hand.

petrus bitbyter

4. ### NogGuest

What good would the fuse be if the 1000 volts were to arc across the open
fuse?

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