Which two types of control devices are commonly used in motor circuits?

In motor circuits, push buttons and limit switches are key components that serve specific functions in controlling motor operations.

Push buttons are manually operated switches that allow an operator to start or stop the motor. When the button is pressed, a signal is sent to the control circuit, enabling it to engage or disengage the motor’s power supply. This on-demand control makes it essential for initiating operations safely and efficiently.

Limit switches, on the other hand, are used to monitor the position of a moving part or mechanism within the motor system. They detect when an object has reached a specific position, enabling the control circuit to stop the motor automatically to prevent damage or overtravel. This feedback mechanism is critical for ensuring the safe operation of machinery.

Together, these devices enhance the functionality and safety of motor circuits, making them commonly used in various applications. Other options include components that serve different purposes in motor control, such as relays and timers for timing operations, but the fundamental manual and positional controls provided by push buttons and limit switches are essential for direct interaction with the motor system.