ActronAir Capacitor ICAR P2 45uF 450V 55x122mm M8 Stud is a high-capacitance run capacitor for large-motor applications including compressor start assistance and high-power fan motor circuits on commercial and large-capacity residential ActronAir systems. The M8 stud mounting and 55x122mm dimensions match the mounting provisions of large commercial outdoor unit control boxes. Isolate power at mains before replacing any capacitor components.