When the commonly used power supply is detected to have deviations (such as voltage loss, overvoltage, undervoltage, phase loss, frequency deviation, etc.), the automatic transfer switch will automatically transfer the load from the commonly used power supply to the backup (or emergency) power supply. If the commonly used power supply returns to normal, the automatic transfer switch will automatically return the load to the commonly used power supply. When there is a deviation in the commonly used power supply, the automatic transfer switch will also transfer the load to the backup power supply. However, when the commonly used power supply returns to normal, the automatic transfer switch will not automatically return to the commonly used power supply, and manual intervention or backup power supply failure is required before returning.

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.

Transfer switches have advantages such as multiple contacts, multiple positions, small size, reliable performance, convenient operation, and flexible installation. The use of conversion switches can simplify control or measurement circuits, avoid operational errors, and reduce the number of components used. A conversion switch is a switching device that plays a crucial role in a circuit. It achieves circuit switching and control through the combination and rotation of multiple contacts. It is widely used in machine tool electrical control, motor control, and measurement systems.

Conversion switch, also known as combination switch, is a switching device that plays an important role in circuits. The operation mode of the switching switch is usually a flat operation with left and right rotation, which is different from the up and down flat operation of the knife switch. By rotating the switch handle, the contacts will move from one position to another, thereby transmitting signals or power in the circuit to different paths.