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Bard 9043-306 - Auxiliary Limit Switch

Bard part number 9043-306 is an OEM auxiliary limit switch used as a safety temperature limit in Bard wall mounted HVAC equipment, helping protect the unit by opening the circuit if abnormal heat conditions occur. When a unit is tripping on limit, short cycling on heat, or showing an overtemperature fault, this switch is one of the first components to verify because correct calibration and mounting location matter for reliable operation. As a genuine Bard replacement, 9043-306 is intended to match factory wiring and performance specifications so you can restore proper safety shutdown function and keep the system operating as designed after diagnosing the root cause of the overheating condition.


  • Technical Specifications
  • Product number: 9043-306
  • Manufacturer description: Auxiliary Limit Switch 4034700
  • HTS Code: "8415.90.8085"

$16.00 *

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