Bard 9043-304 - Primary limit switch

Bard 9043-304 is an OEM primary limit switch (mfr reference 4035000) used in Bard HVAC equipment to protect the heating section by opening the circuit if temperatures rise above safe limits, then automatically resetting when conditions return to normal. This style of auto reset limit control is commonly specified around a 140 to 180 degree operating range with a 2 inch insertion length, making correct part matching important for proper fit and dependable safety operation. If you are troubleshooting nuisance trips, no heat, or intermittent burner operation on a Bard wall mount gas or gas-electric unit, replacing the limit with the correct Bard 9043-304 helps restore factory intended temperature protection and system reliability.

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