How are larger motors typically controlled?

Larger motors are typically controlled by contactors because contactors are specifically designed for switching high voltage and high current loads. They serve as an electromechanical switch that can turn a motor on or off safely and efficiently. Contactors are equipped to handle the demands of larger motors and incorporate features like overload protection, which is essential for preventing damage to the motor from excessive current.

While motor drives can control larger motors, particularly in variable speed applications, and simple switches can control smaller motors, they are not as suitable for larger power requirements. Manual controls are impractical for the ongoing operation and might not be integrated into automated systems. Therefore, the use of contactors provides the necessary automatic and reliable functionality for operating larger motors safely.