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Bard part number 8402-064BX is an OEM limit control (L140-30) used as a temperature safety switch in Bard HVAC equipment. It is designed to open the circuit when the unit reaches an unsafe temperature and then allow operation to resume after temperatures drop, helping protect heaters, blowers, and surrounding components from overheating conditions caused by restricted airflow or abnormal operation. If you are troubleshooting nuisance high limit trips or replacing a failed safety, matching the exact Bard part number ensures proper temperature rating, mounting fit, and reliable system protection as intended by the factory.
* Orders less than $50 may incure a minimum order fee.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.