York S1-025-46402-000 M/R Limit Switch L235F

The York S1-025-46402-000 Manual Reset Limit Switch L235F is to check the temperature and to cut off electrical power, which cannot be re-enabled by electricity until a manual reset in HVAC systems. It is a temperature-sensitive element that opens its contact at the set temperature to avoid overheating of components. This limit switch is installed close to heat-generating components, like heat exchangers or combustion chambers, and is wired into control circuits to limit the damage of overheating and to assist in the controlled operation of furnaces, air handlers, and other heating parts of equipment.