Fuse tube construction

Shenzhen Shenchuang Hi-tech Electronics Co., Ltd(SChitec) is a high tech enterprise which specialized in phone accessories production and sales. Our main products include travel chargers, car chargers, USB cables, power banks and other digital products.All products are safe and reliable, with unique styles.products pass certificates like CE,FCC,ROHS,UL,PSE,C-Tick,etc,  If you are interested in, you can contact ceo@schitec.com directly.

Stay Charging Safely with SChitec

Fuse tube construction

The fuse is generally composed of three parts: one is the melt part, which is the core of the fuse. It acts to cut off the current when it is blown. The melt of the fuse of the same type and the same specification has the same material, the same geometric size, and the resistance value. As small as possible and consistent, the most important thing is that the fuse characteristics should be consistent; the second is the electrode part, usually two, it is an important part of the melt and circuit connection, it must have good conductivity, should not produce obvious The contact resistance is installed; thirdly, the fuse of the fuse is generally slender and soft. The function of the bracket is to fix the melt and make the three parts rigid. It is easy to install and use. It must have good mechanical strength. Insulation, heat resistance and flame retardancy shall not cause breakage, deformation, burning and short circuit during use;

The fuses used in power circuits and high-power equipment not only have three parts of the general fuse, but also arc extinguishing devices, because the circuit protected by such fuses not only has a large operating current, but also two when the melt is blown. The voltage at the terminal is also very high, and the melt tends to melt (fuse) or even vaporize, but the current is not cut off. The reason is that under the action of voltage and current, the two electrodes of the fuse are pulled between the fuses. Arc phenomenon. This arc extinguishing device must have strong insulation and good thermal conductivity, and is negatively charged. Quartz sand is a commonly used arc extinguishing material.

In addition, some fuses have a fuse indicating device, which functions as a certain appearance change when the fuse is activated (fuse), and is easily found by maintenance personnel, such as: light, discoloration, pop-up solid indicator, and the like.