Description
The International Comfort Products 1003174 Auto Limit Switch is a temperature-actuated safety control that responds at preset thresholds of a 130F cutoff and 20F reset to regulate equipment operation. It operates through a bimetal sensing element that expands and contracts with thermal variation, opening or closing electrical contacts based on temperature limits. Found in furnace assemblies, air handling units, and HVAC systems used in heating and airflow protection circuits, it prevents overheating by interrupting burner or fan operation when elevated temperatures are detected and then restoring circuit activity after cooling reaches the reset range.
