What is the difference between overload protection and short circuit protection of high and low voltage fuses?

Overload protection and short circuit protection in high and low voltage fuses are two different protection methods, and their differences are as follows:

1. Overload protection: Overload protection refers to the fuse will automatically cut off the circuit to prevent the current from exceeding the rated current of the fuse when an overload occurs in a circuit.

2. Short circuit protection: Short circuit protection refers to when a short circuit occurs in a circuit, the fuse will quickly cut off the circuit, preventing the current from suddenly increasing to a very high level, in order to avoid equipment and circuits from being subjected to excessive current impact and damage. Short circuit usually refers to direct contact between wires or components in a circuit, resulting in a significant increase in current in an extremely short period of time.

Overall, overload protection is to prevent the current in the circuit from exceeding the rated current of the fuse, while short circuit protection is to prevent a sudden increase in current when a short circuit occurs in the circuit, protecting the safe operation of electrical equipment and circuits. Both of these protection methods are designed to protect the circuit and equipment from excessive current damage, but the corresponding circuit issues are different.