A constant potential device is a critical component in impressed current cathodic protection systems, continuously supplying cathodic protection current to the protected metal structures. Rectifiers and constant potential devices are currently the most widely used equipment. Within China, constant potential devices are more prevalent due to their ability to automatically control the protection potential and their higher efficiency, which conserves energy. Our company offers several types of constant potential controllers, including thyristor-controlled, magnetically saturated, and high-frequency switching models.