White-Rodgers 3L09-18 Limit Switch It protects sensitive controller outputs

It protects sensitive controller outputs from back-EMF and high-amperage draw

it maintains consistent manifold pressure and burner performance across a broad range of Modine unit heaters

Common Questions & Installation Tips How do I confirm the voltage requirements for this coil

Built with a durable brass construction and designed to withstand a maximum working pressure of 450 psig

System Efficiency: Maintains evaporator pressure to prevent coil icing and compressor liquid slugging

White-Rodgers 3L09-18 Limit Switch It protects sensitive controller outputsThe White Rodgers 3L09 18 is a high performance 1 2" bimetal disc limit switch engineered for board mounted applications requiring precise thermal regulation. This fixed temperature control is designed with an open on rise switch action, functioning as a critical safety limit in residential and commercial furnace systems. With a 7. 12" insertion length, the sensing element extends deep into the air stream to ensure rapid response times and accurate