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Bard 8402-146BX - Auto reset limit switch

Bard 8402-146BX is an OEM temperature limit control, commonly referenced as an L185-30 auto reset limit, used to protect Bard wall-mount HVAC equipment from overheating conditions by opening the safety circuit at its rated temperature and automatically resetting as the unit cools. This control helps safeguard critical components during restricted airflow, high heat, or abnormal operating conditions, making it a smart replacement when troubleshooting nuisance trips or a no-heat/no-cool safety lockout tied to the limit circuit. Match the part number 8402-146BX to your unit model and wiring diagram to ensure proper temperature rating and correct fit.


  • Technical Specifications
  • Product number: 8402-146BX
  • Manufacturer description: L185-30 Exp. Face Auto Pnk-Box
  • Weight: 0.150 lbs
  • HTS Code: "9032.10.0030"

  • Previous Versions
  • 8402-146 (Obsolete, superseded by 8402-146BX)

$20.00 *

* Orders less than $50 may incure a minimum order fee.

What does the "BX" suffix mean?

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.