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Description
540-648 uF MFD 110-125 VAC ±20% CD60 Round Start Capacitor - Fits OEM Single Phase Motor, Heat Pump540 648 uF MFD 110 125 VAC Round Start Capacitor Key Features Capacitance: 540 648 microfarads (uF MFD) Voltage Rating: 110 125 Volts AC Frequency: 50 60 Hz Dimensions: 1 13 16 in. Diameter x 4 3 8 in. Height Terminals: 1 4 inch male quick connect Construction: Non polarized aluminum electrolytic Case: Hermetically sealed bakelite case resists oil, dirt, and moisture Duty Cycle: Intermittent, for motor starting applications Replaces Cross Reference
540-648 uF/MFD 110-125 VAC Round Start Capacitor
Key Features
- Capacitance: 540-648 microfarads (uF/MFD)
- Voltage Rating: 110-125 Volts AC
- Frequency: 50/60 Hz
- Dimensions: 1 13/16 in. Diameter x 4 3/8 in. Height
- Terminals: 1/4 inch male quick-connect
- Construction: Non-polarized aluminum electrolytic
- Case: Hermetically sealed bakelite case resists oil, dirt, and moisture
- Duty Cycle: Intermittent, for motor starting applications
Replaces / Cross-Reference Part Numbers
- Packard PMJ540A
- BMI 091A540B125CE7A
- UPC 840899105864
Compatibility & Fitment
- Application: Designed for starting single-phase AC motors
- Common Usage: Air conditioners, refrigeration units, compressors, furnace fan motors, and other motor-driven equipment
- Fits applications requiring a 540-648 MFD capacitor rated for 110V, 115V, or 125V systems
When to Replace
- Motor hums but does not start
- Slow or difficult motor startup
- Circuit breaker trips when the motor attempts to start
- Existing capacitor shows physical damage like bulging, cracking, or leaking fluid
- Capacitance measures outside the rated tolerance when tested with a multimeter
Installation Tips
- Disconnect all electrical power to the unit before servicing.
- Safely discharge the old capacitor using a suitable resistor across the terminals.
- Ensure the microfarad (uF/MFD) rating matches the original capacitor's specification.
- The new capacitor's voltage rating must be equal to or higher than the original.
- As a non-polarized capacitor, wires can be connected to either terminal.
- Secure the capacitor in its mounting bracket to prevent vibration.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Great shelves
Color: Mahogany, Size: 2 Pack
Love these! Easy install and they look great. Very sturdy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
Easy to Hang
Color: Black, Size: 3 Pack
This shelf is easy to hang, comes with great anchors and looks perfect. The quality looks nice and is was an easy hanging process compared to other shelves. Worth it for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
One of the best deals available!
Color: White, Size: 2 Pack
Extremely sturdy, good looking and easy to install. I have a couple of dozen feet of assorted lengths in the kitchen, bedroom, living room and foyer. Holding all sorts of antique clocks, audio equipment and cooking stuff from my flours and assorted cornmeals to cases of powdered “lemonade”.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
★★★★★ 3
Mounting system doesn’t align on one of three shelves.
Color: Walnut, Size: 3 Pack
Nice shelves. Install was super easy except on one of the three shelves. The main mounting shelf holes were off so the shelf will not slip onto horizontal mounting poles unless I modify the shelf. So a 20 minute job becomes a two hour job.
The mounting system does appear very sturdy just not aligned.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
★★★★★ 5
Great center piece for my gaming room
Size: 7.9"D x 39.4"W x 34.3"H, Color: White, Size: 7.9"D x 39.4"W x 34.3"H, Color: White
It’s quite large, but you can display a lot of your cool collectibles on it. It arrives in a nicely packaged box with instructions, although I found the instructions to be quite basic. Most people should be able to figure it out.
Instead of following the instructions, I recommend forming the honeycomb structure on one side and then attaching it to your wall. Drill holes through the holes in the honeycomb, ensuring everything is level. Once the entire unit is assembled, one person can hang it on the wall. However, I suggest having a building partner. I attempted it alone and was straining my core while reaching on a ladder, which was probably not the wisest idea. The build quality appears to be very good, and I believe it will last for many years. The LED light colors are nice, though not as good as those on a razor, but they’re not bad for a third-party product. There are plenty of screws to install, with a couple of extra.
Just for reference my computer screen in the g9 57 inch that’s how big this shelf unit is. Holds up to 120 lbs
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 8, 2026
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