What is a controlled circuit?

A controlled circuit refers to the part of a motor control system that handles low power specifically for control devices such as relays, contactors, and switches. This circuit is crucial for managing the operation of the main motor and other components safely and effectively. By using low power in the controlled circuit, it minimizes the risk associated with high voltages and allows for precise control over the operation of the overall system, making it essential for automation and safety.

The controlled circuit typically activates or disables the main power circuit, which directly powers the motor. By separating the control side from the power side, it ensures that operators can manage large amounts of electrical power without direct exposure to high voltages, enhancing both safety and functionality. In summary, the controlled circuit acts as a backbone for controlling the operation of the motor while utilizing low power devices to safely manage that control.