This device is a 3 Phase 380V AC Digital Voltage Monitoring Meter that includes an over voltage protection relay and an LCD display. It is designed to monitor voltage on a three‑phase 380V AC electrical system and to provide protective action through the integrated relay, with clear status readouts on the LCD. Key benefits Real time visibility of three‑phase line voltage to help prevent unexpected downtime and equipment stress. Integrated over voltage protection relay provides protective action when voltage levels exceed safe limits. LCD display offers clear, at a glance voltage readings for quick verification and maintenance tasks. Simple integration into control panels, switchboards, and electrical distribution systems to centralize monitoring and protection. Key attributes Functionality: digital voltage monitoring with an over voltage protection relay. Compatibility: suitable for 3phase 380V AC electrical systems. Display: LCD provides clear readouts of voltage conditions. Performance: dedicated monitoring with protection capability for voltage excursions. Size and material: size and housing material are not specified in the available information. Specifications and features Voltage rating: threephase 380V AC Type: digital voltage monitoring meter with integrated protection relay Display: LCD for voltage readouts and status indication Application: suited for monitoring and protection in 3phase 380V systems Two to three use cases Use case 1: In a motor control center or industrial machinery room, the device monitors the incoming threephase 380V supply and provides over voltage protection to protect drives and motors from voltage spikes. Use case 2: In a data center or critical power distribution unit, it serves as a reliable voltage monitor for the 380V threephase supply, aiding in early detection of abnormal voltage and triggering protective action as needed. Use case 3: In automation and process control panels, the meter offers continuous voltage monitoring with an integrated protection relay to maintain stable operation of sensors, controllers, and actuators. Installation and considerations Suitable for integration in 3phase 380V AC electrical systems. Install according to electrical codes and standards and connect to the appropriate phases and neutral as required by the installation. Verify LCD readability and ensure power is supplied to the meter to observe displayed voltage values and protection status. This description reflects the product's intended function and features: a 3 Phase 380V AC Digital Voltage Monitoring Meter with an over voltage protection relay and an LCD display, providing realtime monitoring and protective capability for 3phase electrical installations.