PW-CAP-30/5/370-440V PowerWell 30 + 5 MFD uf 370 or 440 Volt Dual Run Round Capacitor PW-CAP-30/5/370-440R for Condenser Straight Cool or Heat Pump Air Conditioner.
Dual capacitors come in a variety of sizes, depending on the capacitance (µF = MFD = micro farad), such as 60 plus 5 µF, and also the voltage. A 440 volt capacitor can be used in place of a 370 volt, as it is build better, but the 370 can’t be used in place of a 440 volt. It will work for a while and will fail prematurely, as exceeding the capacitor’s rated voltage will cause the dielectric to break down and the capacitor to short out. Same as an electric wire- 600V rated wire is better than 300V one .The capacitance(µF or MFD or micro farad) must be the same or stay within 10%+ or 5%- of its original value . Example: 30 µF cap can be substituted by 29 – 33 MFD with the same or better voltage ratings capacitor.