and sensing elements

This fixed temperature switch handles the safety circuit interruption efficiently when airflow is restricted by clogged filters or blower failure

As a time-delay fuse

and Tempstar units

It requires a manual physical intervention to reset after a trip

York S1-024-35286-000 Pressure Switch and sensing elementsThe York S1 024 35286 000 Pressure Switch is a critical OEM replacement component designed for precision monitoring of combustion and ventilation air pressure within HVAC systems. This SPNO (Single Pole Normally Open) switch is factory calibrated to a . 9" WC (Water Column) setpoint, ensuring the control circuit closes only when the appropriate vacuum or draft is established. Engineered for high reliability applications, this close on fall pressure