Dedicated relays that protect motors in manufacturing sites from abnormalities such as overload, phase loss, and ground faults. These include thermal relays, electronic overload relays, and motor protection relays, which are essential protective equipment for safe operation of electric motors in production facilities. They feature overcurrent detection, temperature monitoring, and insulation monitoring functions, automatically stopping motors during abnormal conditions to prevent burnout and accidents. Integrated into inverter control systems and control panels, they serve as critical safety devices supporting stable operation of entire manufacturing lines.