York S1-025-38737-000 Auto Limit Switch Open 140°F Close 160°F

The York S1-025-38737-000 Auto Limit Switch Open 140F Close 160F responds to temperature changes by automatically opening and closing the electrical circuit at its proper operating points. Its temperature-sensitive system detects rising and falling heat levels, allowing the control system to protect equipment from excessive temperatures while restoring operation when conditions return to normal. It is positioned within the heated airflow path, where automatic temperature monitoring is carried out in HVAC systems. Thermal reaction allows proper equipment protection stable control operation, balanced temperature regulation, dependable switching accuracy, and continuous operating reliability.