A soft starter is an innovative device used to control the acceleration of an electric motor. It is designed to reduce the sudden, high start-up current that occurs when a motor starts up. Instead of abruptly turning the motor on at full power, a soft starter gradually increases the motor’s speed, reducing stress on a generator or battery inverter, helping prevent sudden power surges. 

Soft starters are essential to modern HVAC systems, serving as a bridge between the power supply and the motor, ensuring a more controlled and reduced start-up current, light flickering, start-up noises, as well as giving compressor protection.