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The AO Smith 100308923 is a limit switch designed for water heaters. This switch is temperature-sensitive and triggers when the internal temperature hits a certain level. It serves as a safety device to prevent overheating by cutting off the electrical circuit.
This product is essential for maintaining safe water heater operation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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