Williams 7735 Limit Switch 321042-401 Contractors can rely on its

Contractors can rely on its consistent modulating control performance to maintain system balance and optimize airflow modulation across complex ductwork networks

Common Questions What is the primary function of the variable pitch on the Lennox 53J96

Efficient Condensate Removal: Equipped with a timed electric condensate drain and centrifugal separator for zero-moisture carryover

This is the manufacturer-recommended direct replacement

Heat Resistance: Constructed from high-temperature alloys to resist oxidation and thermal stress

Williams 7735 Limit Switch 321042-401 Contractors can rely on itsThe Williams 7735 Limit Switch is a critical OEM replacement part designed for high temperature safety regulation in Williams Forsaire Counterflow top vent furnaces. Engineered with a 330F fixed temperature setpoint and a 5 inch insertion depth, this high limit safety control ensures the combustion chamber does not exceed safe operating parameters. When air temperature reaches the 330F threshold, the switch opens the electrical circuit to the gas