High Voltage Static Contact 3150A Fixed Contact for Vacuum Circuit Breaker

High Voltage Static Contact 3150A Fixed Contact for Vacuum Circuit Breaker

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The contacts are the main electrical contact materials of switching appliances; their reliability directly affects the reliable operation of the entire power system, and the contacts are the “heart“ components of these products.

The contact is one of the key components of the switchgear. The main performance and length of life of the switchgear depend to a large extent on the quality of the contact material.Contact materials usually require good electrical conductivity, low contact resistance, high welding resistance, high arc erosion resistance and material transfer resistance. For vacuum contact materials, they are required to have good electrical conductivity, low contact resistance, high welding resistance, high arc erosion resistance and material transfer resistance.，

It also requires a small cut-off value, high compressive strength and high breaking ability.The microstructure of the contact material has an important influence on its macroscopic properties. The electrical properties of the contact material, such as welding resistance, arc ablation resistance and pressure resistance, are not only related to the composition of the contact material, but also to the size of the grain of the constituent material.

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