Fuse ? A simple question, just to confirm!!?

Question

A fuse rated 10A 250V,the 250V is the max voltage it can stands when opened or blown, am I correct? Or it has another meaning?

Answer 1

You got it right. If the fuse is rated at 250V that's the greatest voltage that it is capable of interrupting without arcing. But be careful, that rating assumes a resistive load. If you have a fuse in the primary side of a transformer, it's a good rule of thumb to use a fuse rated at -twice- the normal line voltage to allow for the inductive 'spike' caused by the interruption of the current path in an inductive circuit.

Doug

Answer 2

The voltage rating of a fuse is the maximum circuit voltage at which a fuse can be relied upon to safely interrupt an over-current. At voltages higher than the rating, a fuse may not be able to suppress the internal arcing that occurs after the fuse link melts.

Answer 3

Fuse is a current sensitive device thats why most fuse even though they have the same voltage (250 V) they differentiate in current ratings (5A,10A,15A ETC.) if the current exceeds the rated current indicated therein the fuse will blow.
The another meaning you are asking is the correct one the current is the name of the game even though you satisfy the voltage but if you exceed the current the fuse will blow

Answer 4

the fuse is used in circuit not more than 250v. meaning to say that the fuse can stand for 250v short circuit current. the fuse is tested with a cotton placed on top of the fuse, blow the fuse with 250v short-circuit current, such that the cotton will not catch fire.

Answer 5

the 250v is the circuits usual operating voltage.

usually expressed as ac or dc i think.

it is not usually related to the max voltage when a fault occurs, though if it is considered that a fault will temporarily increase the voltage then it should be rated for this. (worst case)

Answer 6

u r rite..cheers!!