Armstrong Furnace R37520B002 Rollout Switch critical for protecting the boiler

critical for protecting the boiler block from dry-fire conditions

This switch features standard 1/4-inch male spade terminals for rapid integration into the existing wiring harness

The integrated 60-90 degree Fahrenheit scale is clearly visible through the window

ensuring reliable performance in demanding commercial HVACR applications

Armstrong Furnace R37520B002 Rollout Switch critical for protecting the boilerThe Armstrong Furnace R37520B002 Rollout Switch is a critical safety component designed for precise thermal monitoring within residential gas furnaces. Engineered for high temperature sensitivity, this manual reset rollout switch is calibrated to trigger at 225 degrees F, ensuring the system shuts down if flame rollout or excessive heat is detected outside the combustion chamber. Utilizing a Single Pole Single Throw (SPST) configuration, this limit