York S1-028-12403-700 Sheave Els PW 17895 automatically breaking the electrical circuit

automatically breaking the electrical circuit if the temperature exceeds the 165°F threshold to prevent heat exchanger damage or hazardous conditions

this component provides a consistent 120V input and steps up to a secondary 20KV 35MA output to ensure reliable ignition of the burner assembly

Constructed with high-durability materials and featuring an integrated mounting bracket

installing a factory-authorized heating system component like the LH39WD020 ensures a perfect fit and eliminates the variables that cause nuisance lockouts

ensuring maximum heat absorption and system SEER performance

York S1-028-12403-700 Sheave Els PW 17895 automatically breaking the electrical circuitThe York S1 028 12403 700 Sheave is a professional grade, 1 groove variable pitch pulley designed for precise HVAC blower speed adjustment in commercial air handling units. Engineered with a 1 3 8" bore and a 7. 50" outer diameter, this OEM component allows technicians to fine tune fan RPM and airflow volume to meet specific static pressure requirements. The variable pitch design is compatible with 4L, 5L, A, and B section V belts, providing a