Pentair Boost-Rite LA-MS05 replacement capacitor

Jamieross103

Member
Sep 4, 2024
9
Plano
Hello, Pentair told me this is obsolete and I cannot find it on google anywhere, all sites are out of stock/not longer available. Does anyone know what could be a replacement, the number is ZBR39350 from Pentair website but as my capacitor melted I cannot see the spec on it to find my own, any help appreciated on a replacement as I do not want to buy a new pump when it is the capacitor I need. Thanks.
 
Maybe a 20 uF run capacitor.



1725464069073.png


UPC #: 788379863487



Maybe 12.5 uF?

Boost-Rite Booster Pump Capacitor 12.5uF 450V S4P1100M




ZBR20360 Item 2- Capacitor 12.5uF S4P100M 450V
 
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Maybe a 20 uF run capacitor.



View attachment 608264


UPC #: 788379863487



Maybe 12.5 uF?

Boost-Rite Booster Pump Capacitor 12.5uF 450V S4P1100M




ZBR20360 Item 2- Capacitor 12.5uF S4P100M 450V
Would this be a replacement ZBR20360 for the ZBR39350 ? My capacitor has a 45 on it not a 20, is that important ?
 

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1725465415978.png



1725465852578.png
 

Please note that Icar has ceased manufacturing and some capacitors has been replaced by the new Ducati brand. Please contact us for availability.

 
As best as I can tell, a 45 uF Run Capacitor should work.

However, I cannot tell you with 100% certainty that a different product will work for your pump.

Also, there might be other issues with your motor beyond just a bad capacitor.

Thanks, the motor is buzzing but not turning and when I looked at the capacitor it looked like it basically melted... I will try one and see if it works, thank you for your help on this one.
 
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A simple reactance formula of 2,652 * Amps / Volts shows the uf value of the capacitor.



The formula for capacitive reactance is XC = 1/(2πfC), where:

XC: is the capacitive reactance in ohms

f: is the frequency in hertz

C: is the capacitance in farads

Capacitive reactance is the opposition a capacitor offers to alternating current.

It's measured in ohms, like resistance, and is symbolized by the capital letter "X".

XC = 1/(2π60*0.000045) = 58.95 ohms.
 

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