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Bard 8402-047BX - Automatic Limit Control Switch

Bard part number 8402-047BX is an OEM automatic limit control used to protect Bard wall-mounted HVAC equipment by opening at high temperature and resetting as the unit cools, with a rated operating range commonly referenced as 180F open and 110F close. This temperature safety switch helps prevent overheating conditions that can damage heaters, blowers, or wiring, and it is a common service replacement when a unit trips on limit, short cycles on heat, or fails to run due to an open safety. For best results, match the exact Bard part number 8402-047BX and confirm the mounting style and wiring connections against your Bard unit model and schematic before ordering.


  • Technical Specifications
  • Product number: 8402-047BX
  • Manufacturer description: Limit Control 180-110 - Boxed
  • Weight: 0.150 lbs
  • HTS Code: "9032.10.0030"

  • Previous Versions
  • 8402-047 (Obsolete, superseded by 8402-047BX)

$51.00

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.