The materials of high-voltage fuse cutouts usually include
Conductor materials: Commonly used conductor materials include aluminum, copper, etc., which have good electrical conductivity and mechanical strength. In a high-voltage fuse cutout, the conductor is the key component that carries the current and is responsible for breaking the circuit. Copper has good electrical conductivity, corrosion resistance, and plasticity, and is suitable for large current and high-frequency circuits; aluminum is cheap, lightweight, has a low melting point and good electrical conductivity, and is suitable for small and medium current circuits. Copper-aluminum alloy combines the advantages of copper and aluminum and can reduce material costs in certain situations.
Insulating material: In high voltage fuse cutouts, insulating materials are mainly used to isolate conductors and ensure circuit safety. Insulating materials usually use materials such as ceramics and fiberglass to isolate conductors and prevent short circuits and electric shocks. Alumina ceramics have good pressure resistance and heat resistance and are not susceptible to chemical corrosion, so they are widely used in high-voltage fuse cutouts; although glass is cheaper, its pressure resistance is weaker than alumina ceramics and is generally For use in low-voltage circuits only.
Spring material: Spring material is usually spring steel or stainless steel, which has good elasticity and corrosion resistance and is used to maintain the pressure and position of the contact. The springs in high-voltage fuses are generally made of stainless steel to ensure that they are heat-resistant, corrosion-resistant, and have sufficient elasticity.
Contact material: The contact is the component in the high-voltage fuse that transmits current, and its material selection is related to the current load. The contact material is usually copper alloy or lead alloy, which has good electrical conductivity and wear resistance and is used to cut off the circuit when the fuse trips.
The materials of high-voltage fuses usually include conductor materials, insulating materials, spring materials, and contact materials.The material used for high voltage fuse cutout needs to be considered based on circuit requirements and actual use environment. Different materials correspond to different characteristics and application ranges. Choosing the right material can improve the working efficiency and safety of the fuse and extend its life.