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8402-123 OBSOLETE
- Limit L180-30/3" Blue/Blue
Bard 8402-123 is an OEM 3 inch insertion type temperature limit switch rated L180-30, designed to protect Bard wall mounted HVAC equipment by opening the safety circuit if internal air temperature rises beyond its setpoint, helping prevent overheating and nuisance damage during heat operation. This control is commonly identified by blue leads and is used where the sensing element must extend into the airstream, so matching the correct insertion length and temperature rating is critical for proper trip and reset behavior. If your unit is shutting down on limit or showing an open limit condition, replacing the limit with the correct Bard part number 8402-123 helps restore factory intended safety operation and reliable heating performance.
Official replacement(s):
8402-123BX
- Limit L180-30/3