SKU: 79310553152

40+10 uF MFD ±5% 370/440 VAC Round Run Start Capacitor - Fits HVAC, Air Conditioners, Heat Pumps

Sale price$21.80 Regular price$24.22
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Description

40+10 uF MFD ±5% 370/440 VAC Round Run Start Capacitor - Fits HVAC, Air Conditioners, Heat Pumps40+10 uf 40+10 MFD 370 440VAC 5% Volts Round Run Start Capacitor Key Features Dual capacitance rating: 40 microfarad (uF) for compressor, 10 uF for fan motor Dual voltage rating: 370 or 440 VAC Capacitance tolerance: 5% Operating frequency: 50 60 Hz Case: Round aluminum can with moisture and oil resistance Terminals: Three post design (C, FAN, HERM) with 1 4 inch male quick connects Operating temperature: 40C to 70C ( 40F to 158F) Safety protection:

40+10 uf 40+10 MFD 370-440VAC ±5% Volts Round Run Start Capacitor

Key Features

  • Dual capacitance rating: 40 microfarad (uF) for compressor, 10 uF for fan motor
  • Dual voltage rating: 370 or 440 VAC
  • Capacitance tolerance: ±5%
  • Operating frequency: 50/60 Hz
  • Case: Round aluminum can with moisture and oil resistance
  • Terminals: Three-post design (C, FAN, HERM) with 1/4 inch male quick-connects
  • Operating temperature: -40°C to 70°C (-40°F to 158°F)
  • Safety protection: 10,000 AFC (Ampere Fault Current) internal protector

Replaces / Cross-Reference Part Numbers

  • Replaces any dual round motor run capacitor with matching 40/10 uF and 370V or 440V specifications.
  • Check the label of your original capacitor for matching capacitance (e.g., 40/10, 40+10, 40+10 MFD) and voltage ratings.
  • Known to replace parts such as USA2232A and 40/10DVR.

Compatibility & Fitment

  • Designed for continuous duty in single-phase motor applications.
  • Common in residential and light commercial HVAC systems.
  • Suitable for use in:
    • Air conditioner condensing units
    • Heat pumps
    • Compressor motors
    • Condenser fan motors
    • Refrigeration systems

When to Replace

  • Compressor or fan motor fails to start or struggles to start.
  • A humming sound is audible, but the motor does not engage.
  • Capacitor casing is visibly swollen, bulging, cracked, or leaking fluid.
  • The unit starts but shuts down after a short period.
  • A capacitance test reading is outside the specified ±5% tolerance.

Installation Tips

  • Disconnect all electrical power to the main unit before beginning work.
  • Safely discharge the existing capacitor by shorting across the terminals with an insulated screwdriver (e.g., C to HERM, then C to FAN).
  • Verify the uF (MFD) and voltage ratings of the replacement capacitor match the component being replaced. The voltage rating can be equal to or higher, but never lower.
  • Document or photograph the wire connections to each terminal (C, FAN, HERM) before disconnecting.
  • Ensure the new capacitor is physically secured with the original mounting bracket.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 79310553152

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★★★★★ 5
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Reviewed in the United States on April 8, 2026
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C.L.
Pawtucket, US
★★★★★ 5
Excellent privacy shade.
Color: Coal Black
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Reviewed in the United States on April 9, 2026
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Courtney A.
Boise, US
★★★★★ 5
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Madi R.
West Palm Beach, US
★★★★★ 4
Overpriced but effective.
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Sunny in AZ
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★★★★★ 5
Great price for a great product
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Excellent quality and great price to boot. Easy to assemble and folds up easily to be stored. We are using it as a privacy screen when we have company that needs to sleep on the couch and also to block off a hallway leading to a guest suite. It looks great and is as described in the ad
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