There are often testing requirements in circuit protection to prevent high voltage misconnections. In general, the self recovery fuse can be used in conjunction with overvoltage protection devices to prevent high-voltage misconnections. When high voltage is mistakenly connected to the circuit, the backend overvoltage protection device will quickly react, generate large currents, and limit the backend voltage to a certain range. The large current generated by the backend overvoltage protection device can quickly activate the , limit the total current of the system, and ensure that the backend overvoltage protection device will not be damaged due to long-term overcurrent. The key to this cooperation is that after enduring surges for a long time, can quickly act and limit the circulating current before the backend overvoltage protection device reaches the limit value. Therefore, low current can more effectively cooperate with back-end overvoltage protection devices to prevent misconn
Generally speaking, DC power circuits have protection requirements for anti reverse connection, and in many cases, protection is achieved by connecting anti reverse diodes in series. However, in some cases, anti reflection diodes are not suitable due to the series voltage drop. At this point, the self recovery fuse based on surge protection can be combined with one-way TVS to achieve anti reverse protection. As shown in Figure 6, when the DC power supply is reversed, the unidirectional TVS is directly connected, generating overcurrent, causing the to act quickly and limit the current. When applying this scheme, it is also necessary to consider the withstand voltage of and the power of TVS. self recovery fuses are widely used for overcurrent protection in power lines, communication lines, and various I/O input and output ports of electronic products in communication, security, industrial, automotive, consumer and other fields. It can effectively prevent product damage due to short
USB ports are increasingly included in Industrial internet of things (IIoT) devices. The data speeds of USB 3.0, 3.1 and 3.2 vary from 5GB/s to 20GB/s. USB protocol can provide bandwidth and reliability required by almost all industrial applications. The USB port provides a connection between the host and IIoT devices for real-time monitoring and control, enabling users to make smarter decisions and improve productivity across multiple processes. Overcurrent and overvoltage in IIoT devices may be caused by power overload, surge, or short circuit, which can generate a large amount of heat and increase the risk of physical damage or electrical fire. self recovery fuses can disconnect the circuit during a fault event like disposable fuses, but they are recoverable, allowing them to achieve longer lifespan of the product. Each fuse is composed of a positive temperature coefficient material, and its internal resistance increases exponentially with increasing operating temperature. The
Rechargeable batteries, as an indispensable energy supply method in modern life, have been widely used in various devices such as mobile devices, smartphones, electric vehicles, etc. However, in the event of prolonged charging or charger failure, the charging battery may experience overload, which can cause danger. To address this issue, we recommend using self recovery fuses for overload protection on rechargeable batteries, providing comprehensive safety protection for your device. self recovery fuse is an intelligent electronic protection component that rapidly increases impedance and limits the flow of current when the current exceeds the rated current, thereby protecting rechargeable batteries and devices from the harm caused by overcurrent. Now, we will focus on the advantages of self recovery fuse in overload protection of rechargeable batteries. Firstly, the application of self recovery fuse on rechargeable batteries helps to prevent damage from overcurrent to the battery
A general fuse is composed of three parts: an electrode, a support body, and a melt, while an explosion-proof fuse also has an arc extinguishing device. This type of fuse not only protects the circuit with a high fault current, but also has a high voltage at both ends when the melt melts. Often, the melt has melted (melted) or even vaporized, but the current is not cut off. The reason for this is that at the moment of melting, under the action of voltage and current, Arc pulling occurs between the two electrodes of the fuse. This arc extinguishing device must have strong insulation and good heat absorption, and be negatively charged. The arc extinguishing equipment has a unique arc extinguishing ability. The most important arc extinguishing agent among them includes a composition composed of SiO2 and chloride salts. Because when using fuses, especially miniature fuses, when the fault current is too high or the short circuit is disconnected, a powerful arc will be generated on them
If the explosion-proof fuse is correctly installed in the circuit, the fuse will fuse and cut off the current when the current abnormally rises to a certain height and time, thereby protecting the safe operation of the circuit. Fuses protect electronic devices from current damage and can also avoid serious injuries caused by internal faults in electronic devices. Therefore, each fuse has a rated specification, and when the current exceeds the rated specification, the fuse will blow. When acting on a fuse between the conventional non fusing current and the rated breaking capacity current specified in relevant standards, the fuse should be able to operate safely without endangering the surrounding environment. The expected fault current of the circuit in which the fuse is installed must be less than the rated breaking capacity current specified in the standard. Otherwise, when the fuse blows, there will be continuous arcing, ignition, fuse burning, melting together with the contact,
MB:+86 13924633629 Ms.vicky
E-mail: waimao@xcfuse.com
Factory :
XC Electronics(Shenzhen)Corp.,LTD
Add: Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China
Shenzhen branch: Shenzhen Xucheng Electronic Commerce co.Ltd
Add: 8-15 Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China
