Multifunctional Microcontroller Based 3P Protector Digital Voltage Current Display Adjustable Voltage Protective Device Protecting Values Settable Limiting Protective Meter with Automatic Phase Switching Function This intelligent protecting switch is mainly designed for monitoring and protecting the voltage in the power system. Effectively protects the power system and equipment from over/under voltage and overcurrent. It is suitable for a 220 V power system. The device can automatically cut off the power supply when the voltage is too high or too low or the current is too high to protect the power equipment. With voltage and current calibration function to ensure the accuracy of the power system. With a self-resetting function, the device can automatically return to a normal working state after a fault or abnormal situation without manual intervention. Features: 【Utility Power Equipment】: This intelligent protecting switch is mainly designed for monitoring and protecting the voltage in the power system. Effectively protects the power system and equipment from over/under voltage and overcurrent. It is suitable for a 220 V power system. 【3P Display & Automatic Phase Switching】: The device can uninterrupted display the values of three-phase voltage and current  values in real-time without manual intervention, which is convenient for users to monitor the status of the power system. It supports automatic switching of the working state to adapt to changes in the power system, more powerful and practical. 【Protecting Thresholds Settable】: You can adjust the overvoltage, undervoltage and overcurrent protecting thresholds as your need to prevents the power system from being damaged by overvoltage, undervoltage or overcurrent. 【Multiple Protections】: The device can automatically cut off the power supply when the voltage is too high or too low or the current is too high to protect the power equipment. With voltage and current calibration function to ensure the accuracy of the power system. 【With Self-resetting Function】: The device can automatically return to a normal working state after a failure or abnormal situation without manual intervention. This function can greatly improve the availability and reliability of the device. 1-500 seconds self-reset time is adjustable. 【Wide Applications】: Suitable for a variety of occasions, such as rental houses, shopping malls, schools, factories, etc. Mainly used in all kinds of equipment and systems that need powersupply, such as industrial production equipment, elevators, air conditioning systems, powersupply systems, and so on. Specifications: Name: Automatic Reclosing Protector Material: plastics Model: JJTP2-63A, JJTP2-100A (optional) Rated power voltage: 220 VAC Working voltage: 140-300VAC Rated frequency: 50/60Hz Over-voltage protecting value: 230-300V, default 270V Under-voltage protecting value: 140-210V, default 170V current ranges: 3-63A or 3-100A according to your selection Power-on delay time: 1-500s Item size: JJTP2-63A: 91 * 90 * 66mm / 3.58 * 3.54 * 2.60in JJTP2-100A: 91 * 90 * 101mm / 3.58 * 3.54 * 3.98in Package size: JJTP2-63A: 100 * 100 * 80mm / 3.94 * 3.94 * 3.15in JJTP2-100A: 110 * 110 * 80mm / 4.33 * 4.33 * 3.15in Package weight: JJTP2-63A: 400g / 0.88lb JJTP2-100A: 500g / 1.10lb Packing List: 1 * Automatic Reclosing Protector