Features Automatic Reset Function: Prevent long term power failure and ensure extended service life with the protector's automatic reset feature, enhancing reliability and reducing downtime. Quick Response Speed: The protector boasts a quick response speed and sensitive internal components, saving working time and increasing practicality for efficient operations. Real-time Digital Display: Monitor working voltage and current in real time on the digital display screen, providing confidence and enabling quick detection of abnormalities. Simple DIN Rail Installation: Easily install the 3 phase protector using DIN rail, ensuring a straightforward and stable installation process for convenience and reliability. Overload Protection: Automatically cut off power during overload, ensuring safe operation and protecting against the dangers of overvoltage and undervoltage for peace of mind. Specification: Item Type: 3 Phase DIN Rail Voltmeter Material: PC Model: CHSG 63 Load Current: 1-63A Overvoltage Setting Value: AC390-500V Undervoltage Setting: AC370V-140V Power Off Time (Set 1-300s): 5-300S(V), 30-300S(I) Installation: Approx. 35mm x 1.4in DIN rail Package List: 1 x 3 Phase DIN Rail Voltmeter 1 x Instruction Package List 1 x 3 Phase DIN Rail Voltmeter 1 x Instruction