for applications requiring consistent

Common Questions & Technical Insights:

For veteran contractors servicing residential gas boilers

Does this switch require horizontal or vertical mounting

It functions as the primary electrical interface

Armstrong Furnace R40154B010 Limit Switch Els PW 17895 for applications requiring consistentThe Armstrong Furnace R40154B010 Limit Switch is a critical high limit safety control engineered for precise thermal monitoring in residential heating systems. This L150 30 R40 limit switch is designed to open at 150F and features an automatic reset that closes once the temperature drops by 30F, typically around 120F. As an essential component for system protection, the R40154B010 (functionally identical to 40154B 010) prevents the heat exchanger from