The Nordyne 626459R Limit Switch L190-50F is a temperature-activated safety component designed to protect compatible gas furnaces from overheating. It monitors operating temperature and opens the electrical circuit when the temperature reaches approximately 190°F, interrupting operation to help prevent excessive heat and equipment damage. The switch features automatic reset and is use... https://www.partshnc.com/nordyne-626459r-limit-switch-l190-50-f