Soft Starter is a device used to control the starting of AC motors. It achieves a smooth starting process by gradually adjusting the voltage and current of the motor to reduce the impact on the power grid and the motor itself during startup. Soft starters are mainly composed of semiconductor devices and control circuits. Their functions include smooth starting, motor protection, and energy saving.

The main function of the soft starter is to gradually increase the output voltage during the starting process of the motor so that the motor can start slowly to reduce the mechanical impact and current impact during starting.

The soft starter can not only realize the smooth start of the motor, but also provide a variety of protection functions, such as overload protection, overcurrent protection, overvoltage protection, undervoltage protection, etc., to protect the safe operation of the motor and system.

Soft starters are usually used in high-power motors or equipment that require smooth starting, such as air conditioners, pumps, fans, etc. It has the characteristics of easy installation and simple operation. It can provide a stable and reliable starting process, extend the service life of the motor, reduce maintenance costs, and protect the safe operation of the motor and system.