The breaking capacity of a fuse is a safety index and has nothing to do with its electrical performance, so it is often overlooked by manufacturers or users, and some people even do not know that the fuse has a technical index of breaking capacity.
As a safety element, the fuse needs to ensure the safety of the circuit and the safety of other parts in the circuit at all times, so first of all, you must ensure that it is safe enough under any circumstances, especially during the operation of the fuse. Safety factors, these factors include continuous arcing, re-connection, burning, splashing and explosion. The breaking capacity is one of the indicators reflecting the guarantee capacity of the fuse. (Related reading: Various safety certifications of fuses)
The parameter unit of the breaking capacity is ampere, which means that the fuse can safely break the maximum current of the circuit, that is to say: as long as the overcurrent in the circuit does not exceed the breaking capacity of the fuse, the fuse can ensure that the current is safely cut off. Any unsafe phenomenon; on the contrary, although the fuse can cut off the circuit current, it may not guarantee absolute safety, so the breaking capacity is not an optional indicator.
In order to ensure the safety of the fuse, when we select the fuse, we need to consider the current capacity, fusing characteristics, anti-pulse ability and aging speed, impedance and power consumption, temperature reduction and other necessary performance parameters, but also need to consider the breaking capacity, Safety indicators such as rated voltage and safety certification.
For European-standard small tubular fuses, there are low-breaking fuses and high-breaking fuses for fuses of the same shape and the same size. The breaking capacity of low-breaking fuses is specified as 10 times the rated current or 35 amperes, whichever is better. The larger one.
