Product Features

 High Voltage Protection: This circuit breaker is designed for outdoor use and provides reliable protection against electrical faults in high voltage distribution systems.  Innovative design: The drop-down fuse is equipped with an insulating bracket and a fuse tube with static and moving contacts, which ensures reliable and stable operation. The load-drop fuse includes an elastic auxiliary contact and an arc-extinguishing cover, optimizing load control.  Material Composition: By using a combination of phenolic paper and epoxy glass for the fuse tube, and silicone rubber for the composite types, this product provides excellent durability and insulation.  Hydrophobic Properties: Silicone rubber retains its natural hydrophobicity throughout its service life, effectively repelling moisture and enhancing performance.  Temperature and UV Resistant: Able to withstand high temperatures, flashovers and UV radiation, this fuse ensures long-term reliability in a variety of environmental conditions.  Weight advantage: Our composite fuses are significantly lighter than traditional porcelain fuses, making installation easier and more efficient.  Integrated Design: The insulator body is constructed using integral injection molded silicone, preventing moisture ingress while enhancing structural integrity.  Reduced Flex: Design minimizes flex in the silicone body, improving durability and performance during work breaks and re-welding.  Market Acceptance: With over thirty years of successful use in utility markets, our composite fuse links are the preferred choice for distribution, transmission and substation systems.

     Product Description

   Advanced protection for high voltage systems The 24kV, 27kV polymer fuse circuit breaker is specially designed to meet the needs of modern distribution networks. This high-voltage fuse provides exceptional protection against short circuits and overloads, ensuring the safety and reliability of your electrical infrastructure. Its outdoor-friendly design allows it to function optimally even in harsh weather conditions, making it an ideal choice for utilities.   Innovative materials and construction This circuit breaker with fuse, made of a combination of high-quality materials, has an innovative dropout design that includes static and moving contacts for increased operational reliability. The fuse tubes consist of an internal arc-extinguishing layer and a durable outer shell of phenolic paper or epoxy glass, providing effective insulation and durability. The use of silicone rubber in composite models ensures durability and performance, as well as hydrophobic properties that repel moisture.   Lightweight and easy to install One of the key advantages of our 24kV and 27kV polymer fuse circuit breaker is its lightweight composite structure. Unlike traditional porcelain fuses, our product is easier to handle and install, greatly reducing labor costs and time. The integrated silicone molding process further enhances its reliability by preventing moisture ingress, which extends its service life. With over 30 years of experience in the utility market, this circuit breaker is the preferred solution for today's power distribution needs. Invest in a 24kV, 27kV polymer fuse circuit breaker to improve safety, efficiency and durability in your high voltage applications.

 Circuit breaker processes when a fuse trips  

 In case of any defects or problems in the main lines, a short connection occurs. This short connection flows through the main lines. As soon as the current passes, the voltage of the main line drops quickly and reaches zero. The energy created by the passage of current through the short connection melts the fusible element. In the melting state, the temperature of the fusible element (link) increases the resistance of the fuse (element); and the passage of current reduces the pressure of both ends of the fuse. When the element melts, the spark arc current passes through the fuse; the resistance to the current increases quickly. Thus, the pressure increases at both ends of the fuse. The additional pressure not provided by the main line will be provided by the inductance of the trance circuit (e=1 di/dt); and finally, this inductance causes the current to drop to zero. It should be noted that these processes occur within a few milliseconds, and the disconnection of the fuses will occur in a few milliseconds. For example, when a current of 9 A passes through a 25 A fuse, this current will be disconnected in 2.7 seconds.

 Application environment

 Ambient temperature: -40 ~ +40 ℃  

Altitude above sea level: ≤3000m.  

Maximum wind speed: ≤35 m/s  

Earthquake intensity: ≤8 degrees