Contactors (Solid State)Solid state contactors are a type of relay that uses solid state components, such as transistors and thyristors, to switch electrical circuits. These contactors are typically used to control large currents and voltages, and are able to switch on and off rapidly and reliably, making them suitable for use in high-power applications. Solid state contactors are often used in place of mechanical contactors, which use moving parts to make and break electrical connections. They are commonly used in a variety of applications, including motor control, lighting, and HVAC systems, where their ability to switch high currents and voltages is useful.