The Change Over Switch panel is commonly used in applications where a backup power source is needed in case the primary power source fails. For example, it may be used in a generator system that switches from the main power supply to a backup generator during a power outage.

To use a change over switch panel, the user typically selects which circuit they want to use by turning the switch to the appropriate position on the control panel. The switch mechanism then connects the selected circuit to the power supply, while disconnecting the other circuit.