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Replaces the high limit switch on Sta-Rite Max-E-Therm SR200, SR333, SR400 and Pentair MasterTemp heaters (42001-0063S). It monitors outlet temperature and opens the safety circuit if the heater overheats, shutting the burner down to protect the heat exchanger. This OEM 135°F limit switch matches the factory spec for these models.
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
US$40
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