As a critical high-limit safety control

Durable Construction: Built to withstand the high-cycle demands of industrial HVACR environments without drift in temperature sensitivity

This current-limiting fuse is essential for safeguarding downstream components like transformers and branch circuits from the catastrophic effects of short circuits and sustained overloads

By installing this Bunn replacement part

a trip is caused by restricted airflow

Rheem-Ruud 47-23117-03 Limit Switch As a critical high-limit safetyThe Rheem Ruud 47 23117 03 Limit Switch is a critical OEM replacement safety control engineered to regulate supply plenum temperatures in gas fired comfort systems. This SPST normally closed switch is factory calibrated with an 85 degree F fixed open temperature and a 75 degree F fixed close temperature, ensuring it breaks the burner circuit if internal cabinet temperatures exceed safe thresholds. Designed for maximum reliability in high cycle