company news about The anti-surge capability shall be considered when selecting the fuse

        Some fuses are often disconnected when starting up or just when connecting the power supply, because the anti-surge capability is not considered in the selection of fuse. Most circuits will generate a transient surge current when they are just connected to the power supply. In capacitive or inductive circuits, the surge current is often many times, even dozens of times, larger than the normal steady-state current. If the surge resistance of the fuse used in the circuit is not strong enough, the fuse will be broken by the surge of large energy. If the duration of the surge current is short and the energy released is not enough to break the fuse, the fuse will not break, but it will also be damaged to a certain extent, and it will still be broken after a certain number of surges.

        Similar to this, hot plugging of some plug-in parts in the working state of the whole machine will also produce large pulse current, and the fuse will often be broken by pulse if the impulse resistance is not strong enough.

        To prevent the fuse from being broken by the surge or pulse current and unable to work normally, we need to select the correct fuse type and select the appropriate fuse type according to the possible situation of the surge or pulse in the protected circuit, such as the surge resistant fuse or the slow-break fuse. Melting heat index of fuse I ² The size of t represents its ability to withstand surges. The melting heat value of slow fuse is many times larger than that of fast fuse of the same specification.