Description
The Emerson Climate-White Rodgers 3L09-9 Limit Switch is a thermal switch to monitor internal heat levels within heating equipment. It opens the electrical circuit at 190F and opens at 170F. Close, allowing automatic response to temperature changes during equipment operation. In HVAC systems it is commonly applied in furnaces, unit heaters, and air handling equipment where temperature regulation is required around heat-producing sections. It is positioned near heat exchangers or burner assemblies, coordinating circuit activity based on thermal conditions. It supports controlled operation of connected components during routine heating cycles in residential and light commercial equipment setups.
