Introduction
WDH - 31-530 series motor protection controller (hereinafter referred to as controller) is applicable to three-phase low-voltage AC motor with rated frequency of 50/60Hz, rated voltage of 690 AC and rated current of 800 A. The product has the functions of monitoring, control, protection and communication to provide perfect protection and control for the motor.The controller consists of three parts: the controller body, the protective current transformer module and the display module; The controller body and the transformer are installed and used as a whole.