York S1-025-27747-009 Manual Reset Limit Switch 140°F

The York S1-025-27747-009 Limit Switch is a temperature safety control component used to monitor internal heat levels within furnaces, air handlers, and heating equipment. Rated for 140F operation, it interrupts the electrical circuit when temperatures exceed the specified limit to assist with protecting connected system components. Mounted near heat-sensitive sections of the equipment, the switch requires manual reset after activation before system operation resumes within HVAC systems. Its temperature-responsive equipment assists with maintaining controlled equipment performance, and stable heating operation in commercial applications where regulated thermal control is required.