What type of material is commonly used in circuit breaker contacts for better performance?

The use of silver in circuit breaker contacts is preferred due to its excellent electrical conductivity and high resistance to arcing. Silver has lower contact resistance compared to other metals, which allows for better performance in terms of current-carrying capability. Additionally, silver is less prone to oxidation than materials like copper or aluminum, ensuring a more stable and reliable connection over time.

When a circuit breaker trips, arcing can occur as the contacts open, and silver's properties help to minimize damage during this process. Its ability to withstand high temperatures and its good mechanical durability also contribute to improved longevity and performance of circuit breakers under normal and fault conditions. This makes silver the optimal choice for ensuring that circuit breakers function effectively and reliably in various electrical applications.