ALP300Protector (hereinafter referred to as protector), using advanced microcontroller technology, with anti drying propertiesStrong disturbance ability, stable and reliable work, digitalization, intelligence and other characteristics. The protector can prevent the motor from runningStarting timeout, overvoltage, undervoltage, overload, phase failure, imbalance, underload, and grounding that occur during the process/LeakageProtection is provided for various situations such as blockage, short circuit, and external faults, and on-site maintenance personnel can display them through digital tubesQuickly search for the cause of the malfunction on the screen. This protector hasRS485Remote communication interface,DC4～20mAsimulationQuantity output, convenient andPLCThePCWait for the control machine to form a network system to achieve remote monitoring of the operation of the electric motorControl.