Yueqing Aidun Electric Co.,Ltd. Yueqing Aidun Electric Co.,Ltd.

News

IS THE FUSE BREAKING CAPACITY IMPORTANT?

Publish Time: Author: Site Editor Visit: 63

IS THE BREAKING CAPACITY IMPORTANT?

Yes, very important! A fuse must be able to open the circuit during a short

circuit without losing physical integrity. In other words, it should be able

to exist under a maximum fault level load without physically cracking or

disintegrating. The breaking capacity of a fuse is the maximum available

current, at the rated voltage that the device can safely open without

physically rupturing. The breaking capacity of the fuse must be greater than

the potential fault (short circuit) current of the circuit.

The Breaking Capacity is also known as the ‘Interrupting Rating’. It is

expressed in amps (A) but breaking capacity values are often large numbers.

For example, a breaking capacity of 120,000A is usually expressed as 120kA.