Feature:1. MULTIFUNCTIONAL PROTECTOR: Strictly manufactured, carefully protected, and automatically reset to prevent prolonged power outages, quick response, and eliminate potential over voltage and under voltage dangers.2. OVERLOAD AUTOMATIC POWER OUTAGE: The protector can effectively avoid damage to electrical equipment and machines caused by high voltage at the moment of power on, and avoid damage to electrical equipment and machines caused by short term power on and off flashes.3. MULTIPLE PROTECTION: Overvoltage and undervoltage protection, voltage imbalance protection, phase fault and phase failure protection, overcurrent protection, automatic reset, and other multiple protection functions.4. CLEAR DIGITAL DISPLAY: The digital display displays the working voltage and current in real time, and the current and voltage display is clear at a glance. The panel buttons are complete and easy to operate, making it easy to use.5. EASY INSTALLATION: The back design is standard for 35mm guide rail installation, making it easy and secure to install. This protector has quick response speed and sensitive internal components, saving you work time and making it more practical.Specification:Item Type: 3 Phase Undervoltage ProtectorMode: CHLT 615Material: PCRated Power Supply Voltage: AC230VWorking Voltage Range: AC120V-300VRated Current: 63A (adjustable overcurrent range 1-63A)Rated Frequency: 50, 60HzHysteresis: Overvoltage and Asymmetry: 5VUnder Voltage: 5VAsymmetric Delay: 10sVoltage Measurement Accuracy: Less than or equal to 1% (within the entire range)Rated Insulation Voltage: 450VOutput Contact: 1NOElectrical Life: 10 timesMechanical Life: 10 timesProtection Level: IP20Pollution Level: 3Altitude: Less than Approx. 2000m / 6561.7ftWorking Temperature: -5 to 40 Humidity: Less than or equal to 50% or 40 (non condensing)Storage Temperature: -25 to 55 Installation: 35mm guide rail.Package List:1 x Protector 1 x Manual