What is the role of a motor starter in an electrical system?

A motor starter plays a critical role in an electrical system by initiating and stopping an electric motor's operation. It serves as an interface between the motor and the power supply, ensuring that the motor starts smoothly and operates safely under controlled conditions. The motor starter typically includes protective features such as overload relays that prevent the motor from drawing excessive current, which can lead to overheating or damage. By controlling the starting and stopping processes, motor starters help ensure the longevity and reliable operation of electric motors in various applications.

While measuring electrical current, regulating voltage levels, and extinguishing electrical fires are important functions within electrical systems, those functionalities are not the primary role of a motor starter. The starter focuses specifically on managing motor operation, enhancing safety, and optimizing performance during startups and shutdowns.