The multifunctional self-resetting protector integrates over-voltage protections, under-voltage protections, over-current protections and integrated intelligent protector. When there is over-voltage, under-voltage and over-current solid barriers in the line, this product can instantly cut off the circuit, avoiding damage to electrical equipment. When the unnecessary circuit returns to normal, the protector can automatically restore the circuit to make the electrical equipment work normally. Features: Solid housing design, with high impact resistance, wear resistance and can provide long service time. Visual window design, the location is clear at a glance to aviods misoperation. High sensitivity, high reliablility and with stable working performance. Multifunctional self-resetting dual display protector integrates over-voltage protections, under-voltage protections, over-current protections and integrated intelligent protector.? When the line has overvoltage, undervoltage and overcurrent faults, the product will automatically cut off the line.? When the line voltage or current returns to normal, the product will automatically resume normal power supplys after the delay time set by the user, no manual operation is required. Specifications: Name: 3-Phase Protector Material: PC Rated working voltage: AC220V Operation voltage ranges: AC140V-500V (Three Phase)? Rated frequency: 50/60Hz Rated working current: 63A Over-voltage protections value: AC390V-AC500W Under-voltage protections value: AC140V-AC370V Voltage power off time: 1-400s Overcurrent protections value: 1-63A Overcurrent power off time: 1-30s Recover time (starting delay time): 1-400s Own power consumption: 1.5W Motor mechanical lifespan: 100,000 time Relative humidity: 45-90percent Rh, 40 celsius Altitude: S2000M Pol lution level: Class 2 Item size: 91 * 67 * 90mm / 3.58 * 2.64 * 3.54in Package size: 90 * 94 * 67mm / 3.54 * 3.70 * 2.64in Package weight: 385g / 13.58ounce Packing List: 1 * 3-Phase Protector