The CBB65 SH capacitor is a type of motor start capacitor commonly used in air conditioner compressor motors. The "CBB65" indicates the capacitor's type, and "SH" might denote specific characteristics such as its voltage rating or construction materials. In this case, "SH" likely indicates a type of metallized polypropylene film capacitor commonly used for motor start applications.

The "450V" rating denotes the maximum voltage the capacitor can handle. This means the capacitor is designed to operate at voltages up to 450 volts.

As for the capacitance value, you haven't provided that information. Capacitors are rated in farads (F), but for motor start capacitors, it's more common to see values expressed in microfarads (µF) or picofarads (pF). The capacitance value needed for a specific application depends on the motor's requirements, which are typically specified by the motor manufacturer.

If you have the capacitance value, you can replace it in the sentence to get the full specification. For example, if the capacitance value is 50µF, you could say "CBB65 SH air conditioner motor start-up capacity 450V cylindrical capacitor, 50µF."