Description
The Emerson Climate-White Rodgers 3L09-28 Limit Switch is a temperature-sensitive switching component to respond to elevated heat conditions inside heating equipment. It features a 3.12-inch configuration and operates by opening the electrical circuit at 210F and reconnecting at 180F as temperatures decline. In HVAC systems it is commonly applied in furnaces, air handlers, and unit heaters where thermal response near heat-producing sections is required for controlled equipment operation. The switch is positioned within the appliance assembly close to heated areas, coordinating circuit activity according to internal temperature changes during regular heating cycles in residential and light commercial setups.
