True or False: Circuit switchers operate by manually operating a switch or through remote supervisory controls.

The statement is accurate because circuit switchers are designed to function either through manual operation or through remote supervisory controls. This flexibility allows them to be used in a variety of operational contexts, catering to both immediate manual intervention and centralized control through automated systems. The incorporation of remote supervisory controls enables better monitoring and management of electrical circuits, enhancing the efficiency and safety of power management.

Other options may suggest limitations on how circuit switchers operate. For example, stating they operate only with manual control overlooks the modern capabilities of these devices that allow for remote operation, which is increasingly common in today's electrical systems. Similarly, stating that they only function in high voltage situations would ignore their utility across different voltage levels. Thus, understanding the operational versatility of circuit switchers is crucial for effective application in the field.