making it ideal for fan coil units

and 8D series compressors

ensuring a leak-proof seal in high-vacuum and high-pressure environments

It functions as the primary electrical interface

Can I use a universal switch instead of the 632491R

Armstrong Furnace R40154B010 Limit Switch Els PW 17895 making it ideal for fanThe 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