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Bard 8402-094BX - 210F CO Auto limit switch

The Bard 8402-094BX is an OEM 210 degree F CO auto limit switch used as an over-temperature safety on Bard HVAC equipment, commonly in electric heat and wall-mount heater package applications. This one-shot style limit opens the circuit when the sensed temperature reaches its trip point to help protect heaters and surrounding components from overheating, then requires replacement after a trip, which is why correct diagnosis of airflow, filter condition, and heat kit operation matters before installing a new switch. Use this Bard factory part to restore proper high-limit safety operation and confirm fit by matching the part number and your unit model and serial information before ordering.


  • Technical Specifications
  • Product number: 8402-094BX
  • Manufacturer description: Limit Control 210 Deg - Boxed Oneshot
  • Weight: 0.500 lbs
  • HTS Code: "8415.90.8085"

  • Previous Versions
  • 8402-094 (Obsolete, superseded by 8402-094BX)
  • S8402-094 (Obsolete, superseded by 8402-094BX)

$43.00 *

* 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.