The fuse in the low-voltage electrical appliance refers to an electrical appliance that breaks the circuit by breaking the melt by the heat generated by itself when the current exceeds a prescribed value. A fuse is a current protector made by applying this principle after the current exceeds a specified value for a period of time to melt the melt by its own heat. Fuses are widely used in high and low voltage power distribution systems and control systems as well as in electrical equipment. As short-circuit and over-current protectors, they are one of the most popular protection devices. Fuses From a safety point of view, fuses are more reliable than circuit breakers. The circuit breaker has the danger of refusing! This is the main cause of electrical fires! To this end, the "self-recoverable electronic fuse" was born, it will completely replace the circuit breaker. The thing in the cylinder in which the fuse is wrapped around the fuse is called "fuse". Old-fashioned fuses are made of lead-bismuth alloy. If you touch it yourself, you will find that the fuse is very soft. It is well known that currents are hot, and the higher the current, the higher the heat. In order to prevent the current from being too large in the circuit to burn the wire or the appliance, a fuse having a lower melting point is introduced. Once the current (temperature) in the circuit exceeds a certain value (this value is determined by the thickness of the fuse), the fuse will automatically dissolve and open the circuit. Therefore, the name "fuse" looks a bit more relevant. Today's fuses are not as clumsy, ugly, and unsafe as old-fashioned fuses. The current fuses have a small form factor and the outer casing is wrapped in insulating plastic, which is more convenient to replace than the old fuse. Most critically, the melt changed from lead-bismuth alloy to copper-silver alloy. This change is critical. The new fuses frequently blow the fuses in childhood. Is it really because the current in the home is too large? In fact, lead-bismuth alloys are very unstable, and they will slowly melt when the circuit is in normal use. The current copper-silver alloys are more stable than lead-bismuth alloys and dissolve rapidly after reaching the melting point, with little change in state before. In addition, the method of the new fuse is also simple. No longer need to worry about the fuse, and once you plug it in, the new fuse will be replaced. Then why the fuses will not be eliminated. The role of fuses already mentioned in this article - overload protection of the circuit. Overloading includes excessive power, excessive current, and short circuits. This feature looks familiar - the same function as the current circuit breaker. Because of this, fuses are no longer commonly used in the home. Most plants will continue to be used and will be used with circuit breakers. Since the functions are the same, why bother? Remember that we mentioned above that a major feature of a fuse is that it melts slowly until it approaches the melting point until it melts. This point, put into the home circuit, of course, is more ribs, and even very troublesome. But for large, precision instruments that require high currents, this is not a good thing. The operating current of the circuit breaker is very rigid. For a 20A circuit breaker, the circuit breaker will only trip when the current reaches or exceeds 20A. However, if the current in the circuit is 19A, for the entire circuit, it is already full load or even overload (the circuit breaker is generally selected to be too large) to operate, and for a long time, it will inevitably cause the machine to burn. However, if a 20A fuse is used at this time, it will slowly dissolve until the current reaches and lasts for 19A until it is disconnected. This feature of the fuse is not replaceable by other protective components. Therefore, fuses have remained so far and will not be eliminated. Shenzhen Jinziming Electronic Technology Co.,LTD , https://www.powerchargerusb.com