ULTIMATE RELAY CAPACITOR OVERLOAD REPLACES RELAY, CAPACITOR AND OVERLOAD, FOR COMPRESSORS 1/3 TO 1/2 HP, 115V FOR HIGH EFFICIENCY AND HELPS OLDER COMPRESSORS TO START AND RUN COOLER. Works on "RSIR" Rotary Screw Induction Run, "CSIR" Capacitor Start Induction Run, "PSC" Permanent Split Capacitor, "CSR" Capacitor Start & Run compressors. INSTRUCTIONS INCLUDED In stock