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The Bard 8402-069BX is an OEM automatic reset limit switch used to protect Bard HVAC equipment from overheating by opening the circuit on a temperature rise and returning the unit to normal operation after temperatures drop. This 2 pole safety control is commonly specified with an open point around 150 F and a close point around 125 F, helping safeguard electric heat and other temperature sensitive circuits in Bard wall mounted package units. If you are replacing a tripped, erratic, or failed limit, using the correct Bard 8402-069BX ensures proper temperature cutout action and dependable fit with the original wiring and mounting provisions used by the factory.
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.