Supco SPP7S Hardstart and Ducane models using the

and Ducane models using the 31J9101 specification

and 632143

ensuring reliable operation under varying indoor equipment loads

this board mounted limit switch provides accurate furnace plenum temperature sensing

Common Questions What is the microamp signal range for the Y75AA-3

Supco SPP7S Hardstart and Ducane models using theThe Supco SPP7S Hard Start Kit is a professional grade combination relay and start capacitor designed to resolve compressor startup issues in single phase AC and refrigeration systems. Engineered for PSC and CSIR units ranging from 4,000 to 120,000 BTU (1 2 to 10 HP), this component delivers up to 600% additional starting torque. This is critical for systems with tight tolerances or those operating under high head pressures. The SPP7S utilizes a