JU6D Digital Adjustable Over & Under Voltage Protection Device is designed for precise voltage control and protection in low-voltage power distribution systems. It continuously monitors the supply voltage in real time and displays the voltage value clearly through a digital display, allowing users to easily observe system operating conditions.JU6D operates at a rated voltage of AC 230V with a frequency of 50/60Hz, making it suitable for standard single-phase power systems. The overvoltage and undervoltage protection thresholds are adjustable, enabling users to set protection values according to actual application requirements. This flexibility makes the device suitable for different electrical environments and load characteristics.When the supply voltage exceeds the preset overvoltage value or drops below the preset undervoltage value, the JU6D automatically disconnects the circuit to protect connected equipment. After the voltage returns to the normal range, the device reconnects the circuit automatically following a preset recovery delay, ensuring both safety and continuity of power supply.JU6D features a digital display design, providing clear voltage indication and intuitive parameter setting. Its stable electronic components and reliable control logic ensure accurate operation and long-term performance. The device is designed for DIN rail mounting, allowing quick installation inside distribution boards and control panels. Its compact structure saves space and enables easy integration with MCBs, contactors, and other modular electrical devices.JU6D is widely used in residential, commercial, and light industrial applications to protect household appliances, lighting circuits, motors, and sensitive electrical equipment, offering dependable and adjustable overvoltage and undervoltage protection.