Easy installation: the refrigerator's starter relay is made of plastic, the overload protection is made of brass, both materials are durable, reliable and rust-proof. They can also be easily instalfor direct replacement, restoring the cool air in your refrigerator. Widely Used: 4.7ohm 1 Pole PTC Start Relay and Refrigerator Overload Protection 6750C-0005P are with most mini refrigerators , Compact refrigerators, beverage and beer coolers, freezers and wine refrigerators, which are widely used in your life.