The main metal materials used in AC contactors include copper, iron, and aluminum. Copper, with its excellent electrical and thermal conductivity, is widely used in conductors and connectors in electrical equipment, while iron and aluminum are often used in auxiliary components.
The contacts and contact rods in an AC contactor are typically made of copper because of its excellent conductivity and resistance to oxidation and charge buildup. The contacts are primarily used for switching circuits, while the contact rods are used to connect electrical appliances to external circuits.
Other components within an AC contactor, such as fixed points, overload protection devices, and fuses, are typically made of materials such as iron and aluminum. These components are generally used for auxiliary current conduction and electrical signal regulation.
