Feature 1 Self Resetting: This voltage protector supports automatic reset to prevent prolonged power outages, with quick response, real time digital display of working voltage and current. 2 Quick Response: Overload automatic power off, normal power supply within the specified power range, this protector has quick response speed and sensitive internal components. 3 Working Parameter: 3 phase over and under voltage protector, the rated voltage is AC220V 380V, rated current is 100A, with 3NO output contacts, high electrical and mechanical life. 4 Good Protection: When the protector is overloaded, it will automatically cut off the power supply and provide normal power within the specified range to prevent over and under voltage. 5 DIN Rail Installation: This voltage current protector has a simple structure, adopting DIN rail installation to ensure stability and firmness, greatly saving time and improving work efficiency.Item Type: 3 Phase Voltage Current ProtectorModel: STVP-935AMaterial: PC Flame Retardant Rated Power Supply Voltage AC220V AC380V Working Voltage Range AC80-400V AC140-700V Overvoltage (>U) Setting Range 230-300V 390-500V Undervoltage (>U) Setting Range 210-140V 370-260V Rated Frequency: 50/60HZCurrent Setting Range: 1-100ARated Current: 100A>U and <U Tripping Delay: 1-500sVoltage Measurement Accuracy: 2%Rated Insulation Voltage: 400VOutput Contact: 3NOElectrical Life: 100000 TimesMechanical Life: 1000000 TimesProtection Class: IP20Pollution Level: 3Altitude: 2000mOperating Temperature: -10 to 50Humidity: 50% at 40 (non condensing)Storage Temperature: -10 to 55Size: Approx. 90 x 52 x 97mm / 3.5 x 2 x 3.8in Package List1 x Over Under Voltage Protector1 x User ManualNoteThe voltage displayed between the live line and the neutral line is 220V, and the voltage displayed between the live line and the live line is 380V.