Reznor 234301 Limit Switch 328140-751 drop-in replacement for the obsolete

drop-in replacement for the obsolete VAL3405 and is commonly found in Lochinvar Copper-Fin models such as the CBN0497

For automated operation

Mechanical Connection: Features a bolt-on installation style that eliminates the need for brazing near sensitive internal components

ensuring exact fitment for 80% AFUE efficiency furnaces

applying a thin layer of high-quality thermal conductive paste can improve response time and accuracy by ensuring better contact with the immersion well

Reznor 234301 Limit Switch 328140-751 drop-in replacement for the obsoleteThe Reznor 234301 Limit Switch is a critical safety component designed for precise thermal regulation in HVAC unit heaters. Engineered as a genuine Reznor OEM replacement part, this L150 40F limit switch serves as a high limit safety cut out to prevent heat exchanger damage and hazardous overheating conditions. This specific surface mount limit switch features a 150F trip point and a 40F differential, meaning it breaks the electrical circuit when