QP2-4.7G12 Refrigerator Compressor Replacement PTC Start Relay & Capacitor & Overload Protector Kit, Freezer, Refrigerator Replacement Parts(1set)

Improved starting reliability: PTC starting relay adopts positive temperature coefficient thermistor technology, which has low resistance at low temperatures, allowing large current to generate starting torque through the starting winding; When the temperature rises, the resistance increases sharply, and the starting winding is automatically cut off to avoid sticking or wearing of mechanical contacts Enhanced overload protection: The dish-shaped bimetallic overload protector monitors the current in real time through the electric heating wire connected in series in the main circuit of the compressor Optimize motor operation efficiency: The capacitor is connected in parallel with the compressor motor winding to form a capacitive split-phase start circuit. It provides phase difference at start-up, increasing motor torque by 30%-50% and reducing starting current by 20%-30% to reduce grid impact Reduced maintenance costs: the failure rate of PTC starting relays is less than 0.5%/year, the failure rate of overload protectors is less than 1%/year, and the failure rate of capacitors is less than 2%/year, which is much lower than the failure rate of 5%-10% of traditional mechanical starters Energy saving and environmental protection: PTC starting relay power consumption ≤0.5W, overload protector standby power consumption ≤0.1W, capacitor loss tangent ≤0.001, the three combine to reduce refrigerator standby power consumption by 15%-20%