What is the function of direct online starter?

A direct online starter (DOL starter) is used to start and stop electric motors directly from the power supply. Its primary function is to provide a simple and efficient way to control motor operation, allowing for full voltage to be applied to the motor when starting. This method is suitable for smaller motors, as it minimizes the complexity and cost of motor control. However, it can cause a high inrush current, which may lead to mechanical stress and voltage drops in the supply system.