Fuse suppliers tell six things about fuses

What does a fuse do
Many friends know that many electrical appliances in the car circuit are connected by wires of different colors, the most important of which should be the fuse. The role of a fuse is to protect circuits (lines) and electrical equipment. Let's use the editor to understand the exact function of the fuse.

Materials for making fuses
The fuse must be a fusible metal wire, which can be blown in time when the current is large and play a protective role, so lead-antimony alloy wire is usually used. The fuse material is mainly made of low melting point alloys such as aluminum antimony alloys. The main element of aluminum-magnesium alloy aluminum plate is aluminum, and then a small amount of magnesium or other metal materials is added to enhance its hardness. The aluminum alloy with Mg as the main additive element is also called rust-proof aluminum alloy because of its good corrosion resistance.

How to replace a fuse
Use the same size fuse, because the fuse is too large, when the circuit current is too large, it may cause a fire. The fuse is too small and blows too easily, making replacements more frequent. You can take the old fuse and ask the seller about the maximum current the fuse will allow. After selecting the replacement fuse, pull down the double pole switch. Disconnect the power, open the plastic case, and check for a short circuit. Replace the broken fuse with a screwdriver. Replace it as it is, install the case, and close it.

What to do if the fuse is blown
1. If it is because the fuse is aging, you can first turn off the power switch, then open the switch box, so you can see the fuse inside, and then buy a new fuse wire with the same length, type, and thick wire as the burned fuse. That's it.
2. If it is because of a short circuit fault in the socket at home, it is necessary to troubleshoot the fault first to see which socket is short-circuited and then repair the socket first, and then replace the new fuse or replace the corresponding easy air switch.
3. If the fuse is blown due to too many electrical appliances used at the same time, it is necessary to replace a new fuse or an air switch of the corresponding capacity, and then reduce the number of electrical appliances used at the same time.

How to replace the fuse
1. Open the screw to be connected to the fuse, be careful not to completely unscrew it, keep the thickness of the fuse, then connect the fuse, and then fix the screw.
2. When replacing the fuse, the switch must be closed first, otherwise, there may be a danger of electric shock. If there is no replacement experience, please professional maintenance personnel to replace it.

How a fuse works
The fuse supplier tells you that when the current flows through the conductor, the conductor will heat up due to the existence of a certain resistance. After the material and shape of the fuse are determined, its resistance is also determined. When the current flows through it, it will heat up. It will generate heat, and its calorific value will increase with the increase of time. The size of the current and resistance determines the rate of heat generation. The structure of the fuse and its installation condition determine the rate of heat consumption. If the rate of heat generation is less than the rate of heat dissipation At this speed, the fuse will not blow.