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A capacitor is an electric component that temporarily stores an electrical charge. A "run capacitor" supports electric motors, such as in air conditioner or heat pump units, a fan motor and a compressor motor. The capacitor has two terminals. Capacitors come in a variety of sizes, depending on the capacitance (µF or MFD), such as 40 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) must be the same or stay within 10%+ or 5%- of its original value . Example: 50 µF cap can be substituted by 47.5 to 55 µF with the same or better voltage ratings capacitor . Round oval-shaped run capacitors are commonly used for air conditioning, to help in the starting of the compressor and the condenser fan motor.
30/5 uf Capacitor or 30/5 MFD Dual Run AC Capacitor. Replaces BOTH 370 & 440 VAC capacitors
Replacement for TRCFD305 , TT-CAP-30/5/440 , 97F9833 , 27L877 , C3305R , CPT00659 , CPT-0659 , C4305R , 97F9981 , HC98JA031D , PRCD305 , USA2226 , P291-3054R , HCKS300D050R440Z
Can size measures 2" diameter x 4-5/8" tall. Operating temperature range -40 C. to +70 C/ -40F to 158F
Operating Temperature Range -40 ℃ to +70 ℃/ -104℉ to +158℉
Built to the TOUGHEST USA standards for AC motor run capacitors including EIA-456-A and IEC 60252-1:2001
This replacement part was perfect. I did a lot of research about the specs that my model required, and everything matched exactly as expected. I also try to be a DIY'er at home as much as possible as a responsible homeowner, so I learned from multiple online guides about how to perform the process of replacing this part. My A/C works again!But here's the caveat, and I hope this helps you: While performing the replacement I encountered something unexpected. My power utility company installs power regulation circuits to cut electricity costs when people are typically away from the house during the week during high power consumption periods. This "box" REPLACES the typical outdoor power breaker that sits next to the AC unit.While most online guides tell users to cut off the power here and inside, none mention these utility company power-saver boxes. The front warning text mentioned something about protecting me from injury, but as an American DIY'er, we all know how that works. ...nothing about fines or civil/criminal penalties, so I figured I was good to go. So being a curious DIY'er I broke the wire seal, and popped it open! (after securing all, and I mean "ALL" other power sources to the AC circuit) What I found was a circuit board; nothing about the circuit breaker from all the guides I read. This is definitely a local thing to my metro area, by the way, so I wouldn't necessarily expect you to encounter this box. But just in case you do...Suffice to say, after viewing the circuit board I promptly closed it and went about my business. Even went so far as to scrawl a tiny, little apology in permanent marker on the house paint right next to the box for breaking their little "wire seal". Ha! I'm sure the next service tech will get a kick out of that--right before they still charge me for... whatever this is going to cost for opening the box. Kick the can down the road, as usual. I may be overly curious but I'm still honest and don't want to try to hide this action.Anyways, the point is, if you see one of these little locked boxes, DO NOT OPEN IT; the power breaker is not in there. Just secure power at the circuit breaker inside the house, and TEST, TEST, TEST with a multimeter to make sure there are no energized circuits.Genuinely hope this helps you save money and perform the replacement safely. Good luck!!I was having trouble with my central air and found out I had a bad capacitor and I didn’t have an exact replacement. I was able order on a Saturday and received the next day! Got everything back up and working in no time.Don't spend the money for an HVAC tech. Do it yourself.Part was delivered fast, a breeze to install. Quality seems good. Its been in a week so hopefully longevity isnt an issue.Like saving money? Hate over paying by 4000% (this is not an exaggeration) for labor? Install this well-built capicator in your HVAC system yourself for a $400 discount as compared to "professional" installation. Online video + this part + your effort = money saved. Now pay yourself $400.Installed easily. It’s a little fatter than the OEM coil but worked greatBuy two keep a spare on hand. Very common part to fail on A/C systemsI installed this capacitor in our a/c two days ago, and it is working fine so far. It is a direct replacement in all ratings and terminal locations. I had already replaced the original capacitor with separate 45uf and 5uf capacitors a few years ago, so I can't speak to the exact size and mounting clamp being the same or different as the original. This unit was easy to mount and is secure using the mounting clamp I made.One common reason for failure of this type of capacitor is power line fluctuations. That can occur if the power shuts off unexpectedly (e.g. storm), from lightning nearby, power spikes, and other types of power problems that cause voltage instability. Over time, the capacitor's performance will degrade until it fails. This is true of all polymer capacitors, not just the one from this supplier. I keep a spare capacitor because of the occasional power fluctuations we have in our area. I will be ordering a second capacitor from this supplier so I still have a spare.wish this came with good instructions. had to watch lots of videos to figure it out myself. after install my ac motor did come to life so it works. recommend
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