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Bard part number 8402-033 is an OEM temperature limit control used in Bard wall mount heater applications to protect the heater from overheating by opening at 140 F and resetting at 115 F, with a 2.5 amp rating. This control is a critical safety device that helps keep the unit operating within its designed temperature range, and it is commonly listed for specific Bard wall mount heater models such as EHW3TAB-A10 and HW3TAB-A10L. When replacing a limit control, confirm the unit model and the temperature and electrical ratings match the original part to ensure proper fit and safe operation.