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The Rheem 47-21900-21 is a limit switch that features a manual reset function. This switch is configured as a single pole, single throw (SPST) and operates normally closed (N/C). Its primary function is to shut down equipment when a specific temperature is reached. After tripping, it requires manual resetting by pressing the reset button. The switch is designed to open at two set temperatures: 230 degrees Fahrenheit and 170 degrees Fahrenheit.
Rheem's limit switch enhances safety in heating systems and is crucial for preventing overheating.
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