Features Advanced Monitoring System: Designed for 3 Phase Four Wire Power Supply, this device ensures reliable monitoring and protection for your electrical equipment Rapid Response Protection: With automatic reset functionality, the voltmeter ammeter swiftly eliminates overvoltage and undervoltage threats, preventing prolonged power failures Immediate Power Interruption: Instantly disconnects power during overvoltage, undervoltage, or overcurrent events to safeguard your devices, automatically restoring power when conditions normalize Features: 1、APPLICABLE SCENARIO: Automatic reset overvoltage and undervoltage multifunctional protector is a kind of monitoring and auxiliary protection device suitable for three phase four wire power supply system or electrical equipment 2、SAFE AND FAST: Voltmeter ammeter after strict manufacturing, careful protection, automatic reset, prevent long term power failure, rapid response, to eliminate overvoltage, undervoltage concealed dangers 3、EFFECTIVE PROTECTION: If overvoltage, undervoltage or overcurrent occurs in the line, voltmeter ammeter can immediately interrupt power supply and protect electrical equipment from damage. When the mains voltage returns to normal, the protector can automatically turn on the power normally 4、COMPREHENSIVE FUNCTION: The protector set surge protection, undervoltage protection, overcurrent protection, three phase current (voltage) unbalance protection, phase sequence protection(phase offset protection), phase loss protection in one 5、 AND DIGITAL DISPLAY: The overcurrent protector features a rugged PC flame retardant housing with high impact resistance, wear resistance and long service life. Digital real time display of working voltage and current, position at a glance, avoid mis Specification: Item Type: 3 Phase DIN Rail Voltmeter Ammeter Material: PC Rated Current: 63A Load Current: 1-63A Overvoltage Setting Value: AC390-500V Undervoltage Setting Value: AC370V-140V Power Off Time (set 1-300s): 5-300S(V); 30-300S(I) Installation: Approx. 35mm / 1.38in guide rail Package List: 1 x 3 Phase DIN Rail Voltmeter Ammeter Package List 1 x 3 Phase DIN Rail Voltmeter Ammeter