This manufacturer-approved thermal fuse (part number DA47-00301B) is for refrigerators. Thermal fuse DA47-00301B shuts off the defrost heater if the defrost thermostat fails. Safely store any food that could deteriorate while the power is off and unplug the refrigerator before installing this part. Wear work gloves to protect your hands. Replace part numbers 2031597, PS4140642, B008KFFPDY.