Compatible models: The refrigerator overload protector helps prevent the compressor from overheating. Replaces part numbers AP4439459, 1357963, AH3529540, EA3529540, PS3529540. Check your refrigerator model before purchasing to ensure compatibility. PTC starter relay: This PTC start relay is a universal type used on various mini fridges and coolers. Designed for use with QP2-4.7 one-terminal relay. Verify 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. Simple installation for direct replacement, helping restore cooling function. 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. Suitable for everyday household use. Color: As shown Material: Plastic Package Contents: 1 x 4.7 ohm 1-pin PTC start relay 1 x 6750C-0005P refrigerator overload protector Only the above package content is included; other items are not included. Note: Lighting and display differences may cause slight color variation between the image and actual item. Measurement tolerance: +/- 1-3 cm.