The core components of an automatic transfer switch include a controller, sensors, and actuators. The controller is responsible for detecting the status of the power circuit and issuing control signals based on the preset logic; Sensors are used to convert the state of the power circuit (such as voltage, current, frequency, etc.) into electrical signals and transmit them to the controller; The actuator performs power switching operations based on the instructions of the controller. In addition to the core part, the automatic transfer switch also includes components such as the switch body, connecting wires, positioning brackets, etc. These components work together to ensure the normal operation and reliable switching of the automatic transfer switch.

An automatic transfer switch is an electrical device composed of one or more transfer switch devices and other necessary devices, used to monitor power circuits (such as voltage loss, overvoltage, undervoltage, phase loss, frequency deviation, etc.), and automatically convert one or more load circuits from one power source to another. In the electrical industry, it is also known as a "dual power automatic transfer switch" or "dual power switch.".