Features VOLTAGE AND CURRENT: Over under voltage protector rated power supply voltage is AC220V (L-N), rated power frequency for 50/60Hz, rated working current is 80A ACCURATE AND STABLE: The measurement error over under voltage protector is less than or equal to 1%, which is installed with EN/IEC 60715 DIN rail PROTECTION OBJECT: Protector is suitable for household and similar places electrical appliances in line induction lightning strike overvoltage, operating overvoltage to protect the role INTELLIGENT CONTROL: The protector can set the voltage according to the power condition. The intelligent chip displays the current power voltage over the voltage and automatically breaks off MAIN APPLICATION: Protective device is mainly used to limit the transient overvoltage amplitude, absorb, consume or discharge the inrush current energy, so that in the case of high overvoltage class, can make the protected electrical components switch fr Specification: Item Type: Over Under Voltage Protective Device Rated Power Supply Voltage: AC220V(L-N) Rated Power Frequency: 50/60Hz Rated Working Current: 80A Maximum Load AC: 3VA Overvoltage Operating Value: 230V-300V(factory default: 275V) Undervoltage Operating Value: 140V-210V (factor: 175V) Overvoltage Undervoltage Operation Delay: 1-400S Overcurrent Action Delay: 1-30S Lag: 5% (U.I) Power On Delay Reset Time: 1-400S Measurement Error: ≤1% Mounting or DIN Rail: DIN rail EN/IEC 60715 Package List: 1 x Over Under Voltage Protective Device 1 x User Manual Package List 1 x Over Under Voltage Protective Device 1 x User Manual