This project shows a smart solution for protecting electrical transformers in smart cities. When too many people turn on fans and lights at the same time, the load on the transformer increases and it may overheat.

In this Arduino-based system, the power load is monitored automatically. If the load becomes too high, the system temporarily cuts the power and turns on a cooling fan to protect the transformer. A display also shows the cooling time to users.

After the transformer cools down, the power supply is automatically restored. This project demonstrates how smart automation can help manage electricity safely in modern cities.