Compatible models: The refrigerator overload protector helps prevent the compressor from overheating. This part is suitable for replacing numbers AP4439459, 1357963, AH3529540, EA3529540, PS3529540. Please verify your refrigerator model before purchasing to ensure compatibility. PTC starter relay: The PTC start relay is a universal type designed for use with various mini fridges and coolers. It is compatible only with QP2-4.7 one-terminal relay. Please confirm compatibility before purchase. Easy to install: The refrigerator starter relay is made of plastic, and the overload protector is made of brass. Both materials are durable, reliable, and rust-resistant. Designed for direct replacement, this unit helps restore cooling performance. Widely applied: The 4.7 Ohm 1-pin PTC start relay and 6750C-0005P refrigerator overload protector are compatible with most mini fridges, compact refrigerators, beverage coolers, beer coolers, deep freezers, and wine refrigerators. Color: Material: Plastic Package Contents: 1 x 4.7 ohm 1-pin PTC start relay 1 x 6750C-0005P refrigerator overload protector Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.