A soft starter ensures smooth and uniform starting by torque control for gradual acceleration of the drive system which goes on to help in preventing jerks (in the case of phase 3 control starters). This extends the life of mechanical components and reduces their maintenance requirements.A significant reduction in starting current to achieve break-away, along with holding back the current during acceleration. Soft starters also play significant roles in preventing mechanical, electrical, thermal weakening of the electrical equipment such as motors, transformers & switchgear. The microprocessor version of the soft starter possesses a software controlled response at full speed which helps in monitoring energy.

Soft starters facilitate power factor correction as well – it is a self monitoring inbuilt feature.