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. Specification: Item Type: 3 Phase Voltage Current Protector Model: STVP-935A Material: 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: 50/60HZ Current Setting Range: 1-100A Rated Current: 100A >U and <U Tripping Delay: 1-500s Voltage Measurement Accuracy: 2% Rated Insulation Voltage: 400V Output Contact: 3NO Electrical Life: 100000 Times Mechanical Life: 1000000 Times Protection Class: IP20 Pollution Level: 3 Altitude: ≤2000m Operating Temperature: -10℃ to 50℃ Humidity: ≤50% at 40℃ (non condensing) Storage Temperature: -10℃ to 55℃ Size: Approx. 90 x 52 x 97mm / 3.5 x 2 x 3.8in. Package List: 1 x Over Under Voltage Protector 1 x User Manual Note: The 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.