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Description
540-648 uF MFD 110-125 VAC Round Start Capacitor ±20% - Fits OEM Single Phase Motor, Heat Pump - 2 Pack540 648 uF MFD 110 125 VAC Run Round Start Capacitor Key Features Capacitance: 540 648 Microfarad Voltage Rating: 110 125 VAC Frequency: 50 60 Hz Operating Temperature: 40C to +65C ( 40F to +149F) Shape: Round Case Material: Moisture resistant plastic Terminals: 1 4 inch male quick connect Dimensions (Typical): 1. 75 in Diameter x 3. 38 in Height Dielectric: Non polarized aluminum electrolytic Replaces Cross Reference Part Numbers Serves as a
540-648 uF/MFD 110-125 VAC Run Round Start Capacitor
Key Features
- Capacitance: 540-648 Microfarad
- Voltage Rating: 110-125 VAC
- Frequency: 50/60 Hz
- Operating Temperature: -40°C to +65°C (-40°F to +149°F)
- Shape: Round
- Case Material: Moisture-resistant plastic
- Terminals: 1/4 inch male quick-connect
- Dimensions (Typical): 1.75 in Diameter x 3.38 in Height
- Dielectric: Non-polarized aluminum electrolytic
Replaces / Cross-Reference Part Numbers
- Serves as a universal replacement for any start capacitor with matching capacitance and voltage ratings.
- Common type designation: CD60
- Example Part Number: 091A540B125CE7A
Compatibility & Fitment
- Designed for intermittent duty in AC single-phase motor starting circuits.
- Used in appliances, HVAC systems, well pumps, air compressors, and other electric motor applications requiring a starting torque boost.
- Fit is determined by matching electrical specifications and physical dimensions.
When to Replace
- Motor hums but fails to start or struggles to start.
- Start-up is slow or delayed.
- Circuit breaker trips when the motor attempts to start.
- Capacitor case is visibly swollen, bulging, or leaking.
Installation Tips
- Disconnect all electrical power to the unit before servicing.
- Safely discharge the existing capacitor by shorting the terminals with an insulated-handle screwdriver or appropriate discharge tool.
- Verify that the MFD/uF and VAC ratings of the new capacitor match the specifications of the original part.
- Note the wire connections before disconnecting the old capacitor to ensure correct polarity-free reattachment.
- Secure the new capacitor in the 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
4.6 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Really indestructible
Color: Yellow
As advertised. I have an obsessed 16lb mixed breed dog that has destroyed everything purchased that says indestructible. Until now... These balls really are indestructible. She loves them and plays with 2-3 at a time. Chews on them and still going. They are the size of regular tennis balls. Others are slightly smaller. These are great and bright... Mooky highly recommends.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
A Dog’s REAL Best Friend!
Color: White, Color: White
This ball is truly my dog’s best friend! It is perfect especially for indoor fetch because it’s lightweight (AKA nondestructive!), has just the right amount of bounce, and cannot be torn up by mild to medium chewers. (We have a labradoodle and she isn’t much of a chewer.) It really is bite resistant, and I have a video to prove it!
Our dog loves the softness of it. We love that we can throw it around the house without it breaking anything. It almost feels like heavy duty bouncy styrofoam that cannot be picked at or bitten up. We bought the pack and are storing a couple of them for when we someday lose them here and there.
I recommend this ball to EVERYone who has a dog and likes to play fetch!
FOFOS, pick us for ads! My doggie is obsessed with your product, and I love taking pics and videos of her using it. She’s the type of dog that walks around with a ball in her mouth for fun and comfort. Think of it as her stuffed animal.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Great buy!
Color: Yellow
Dogs love them! They chew on the and the are very sturdy!
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Reviewed in the United States on April 20, 2026
★★★★★ 4
Amazingly strong
Color: White
My dog loves them, I was buying normal tennis balls but he was chewing them and splitting them these don’t break but they deteriorate if they get left outside 100% recommend just keep that in mind
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Never pop balls
Color: White
These things are the best balls you can buy. My dog loves playing with them and chewing on them. And she has never popped one they are a great purchase if your dog usually pops other balls. These are solid and light weight
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Reviewed in the United States on April 23, 2026