AC Motor Run Film Capacitors KEMET AC Motor Run Film Capacitors offer a 1µF to 160µF capacitance range and a 500VAC maximum voltage rating. Depending on the model, motor-run capacitors are ideal for compressors, low-power electric motors, and single-phase motors. KEMET AC Motor Run Film Capacitors include the following series: C27, C28/4, and C87.