How are thermal overload contacts on a line starter typically reset?

Thermal overload contacts on a line starter are typically designed to automatically reset once the overload condition is cleared. When the motor experiences a thermal overload due to excessive current, the thermal overload relay opens the circuit, cutting off power to protect the motor from damage. After the overload has been resolved, the thermal element cools down, which allows the contacts to close automatically and restore power to the motor without requiring manual intervention. This feature is essential for ensuring that equipment can resume operation promptly after an overload condition is cleared, enhancing operational efficiency and safety.

While there are systems that can be manually reset or designed for remote operation, automatic resetting is the standard and most common method used for thermal overload devices in line starters, making it the most appropriate answer.