The first step in relay production is the preparation of raw materials. The most common materials used in the production of relays include copper for the coil windings, silver or silver-alloy for the contacts, and plastic or metal for the casing. These materials must meet strict quality standards to ensure optimal performance in the final product. Copper wire, for instance, is often coated with enamel or other insulating materials to prevent short circuits in the coil winding.

    2. Manufacturing the Coil

    The coil is one of the most important components of a relay. It is made by winding a copper wire (usually enameled for insulation) around a core, often made of a magnetic material like iron or ferrite. The number of wire turns and the thickness of the wire depend on the specifications required for the relay. The coil is wound using automatic machinery that ensures precise control over the number of turns and uniformity of the winding process. Once the winding is completed, the coil is tested for resistance and other electrical properties to ensure it will perform under the required conditions.