A Direct-On-Line (DOL) starter is used to start electric motors by connecting them directly to the power supply, providing full voltage and high starting torque.
It includes protection devices like overload relays and circuit breakers for motor safety. DOL starters are simple, cost-effective, and commonly used in applications requiring high starting torque, such as pumps, compressors, and fans.
However, they are not suitable for larger motors due to the high inrush current, which can cause voltage dips.
Possibly Below 5kw is preferred.