... circuit,overloading,block loading,current leakage etc. YD2300 Series Intelligent Motor Protector, developed by YADA Electric Co., Ltd., ... or composed, to prevent damage to motors ( 50Hz AC current, rating voltage 660V) caused by short circuit, ... , or zero sequence.Feature ModelStructureFunction & FeatureYD2301TIntegrated² The motor protector replaces the thermal relay protection by adopting Normal ...