In electrical control circuits, what is typically the main function of limit switches?

Limit switches play a crucial role in electrical control circuits primarily by serving the function of turning loads ON and OFF. These switches are designed to detect the presence or absence of an object within a specified range, which, when activated, signals the control circuit to energize or de-energize specific loads. For instance, in a conveyor system, a limit switch can detect the position of a moving item and, depending on its configuration, activate or deactivate motors to control the movement of the conveyor belt.

This function is essential in many applications; limit switches ensure that machinery operates within its designated parameters, effectively managing the operational flow by actuating devices based on the set limits. While safety cut-offs and voltage adjustments are critical in other contexts, the primary role of limit switches centers on the direct control of loads based on positional feedback. Control of display outputs is a function typically reserved for other types of electrical components, which can include indicators or relays.