China Limit Current Fuse Factory

"JECSANY" is a professional China various medium and high voltage product provider which supplies , Limit Current Fuse, Line Protection Device, auto reclosers, switchgear, Surge arrester, Dropout fuse, polymer/porcelain insulators, power tools, power accessories, OPGW/ADSS optical cable, distribution transformers, etc. And be able to provide one-stop service for new and old customers, including product development, design, manufacturing, transportation, installation, and after-sales service.

Limit Current Fuse is a type of high-voltage fuses. Current limiting fuses are divided into resistance current limiting and arc reactance conversion current limiting. Resistor current limiting makes the current value in the circuit limited below a certain amplitude. It will not exceed a certain value regardless of whether it is short-circuited or not. Current limiting fuses are available in two melt configurations, an in-line melt and a helically wound melt. The arc reactance increases with arc elongation after in-line melt arcing. And gradually change the phase. Helical melts change phase using helical reactance transformation. The two create zero break so that the voltage and current cross zero at the same time. Phase shift to extinguish the arc before the current peaks. The current-limiting capability of this kind of arc extinguishing is very different. It can be seen that the type and structure of the current limiting fuse must be considered in the power supply design. A fuse that can limit the peak short-circuit current is called a current-limiting fuse. The current-limiting fuse only has a good working period of half a wave, otherwise it is difficult to break.
High-voltage and large-capacity current-limiting fuses have made great progress, especially full-range fuses that can be used as complete protection for medium-voltage equipment in the future. For example:
1. To protect the transformer, which is the most commonly used case of high-voltage current-limiting fuses. 
2. To protect the wire and cable, the high-voltage current-limiting fuse acts as a short-circuit protection for the wire and cable. At this time, the rated current of the fuse must match the continuous carrying capacity of the cross-sectional area of the cable used.
3. To protect the motor, the high-voltage current-limiting fuse can also be used to protect the motor. At this time, the lower limit of the protection depends on the starting current of the respective motor. In addition, when selecting fuses. The starting duration and starting frequency are also closely related to avoid fuse breaking due to heat generation.
4. To protect the capacitor. When protecting the capacitor in the compensation device, the short-circuit transient current during operation should be considered. The magnitude of the inrush current is related to many factors, such as the capacitor capacity, the natural frequency and inductance of the power grid, and the time of input.

"JECSANY" Limit Current Fuse have stable quality and the products are exported to Southeast Asia, South Africa, South America, the Middle East and other global markets. OEM customization can also be made according to the drawings or samples provided by customers.