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Bard 8402-075BX - Auto Reset Limit Control

The Bard 8402-075BX limit control is a 2 pole, automatic reset temperature safety switch commonly used in Bard wall mounted HVAC equipment to monitor heater or discharge air temperature and open the circuit if temperatures rise beyond its setpoint. Identified as an L170 style control with a 7 inch sensing element and a 7 to 170 degrees F rating, it helps protect electric heat components and wiring from overheating while allowing the unit to return to normal operation once temperatures drop back into range. As a genuine Bard OEM control, 8402-075BX is the correct fit and electrical match when replacing a failed limit control, but you should still confirm compatibility by model and serial number before ordering.


  • Technical Specifications
  • Product number: 8402-075BX
  • Manufacturer description: Limit Ctrl L170-7.0 2Pole -Box
  • Weight: 0.150 lbs
  • HTS Code: "9032.10.0030"

  • Previous Versions
  • 8402-075 (Obsolete, superseded by 8402-075BX)

$47.00 *

* 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.