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Quick specs
Capacitance
40 MFD
Type
Motor run capacitor
Voltage
370/440 VAC
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
TRADEPRO 40 MFD 370/440 VAC Round Motor Run Capacitor TP-CAP-40/440R-A
Single Run Capacitor·370/440 VAC Rated
$38.68
-
- Free shipping — most items ship by the next day
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Secure payment
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TRADEPRO 40 MFD 370/440 VAC Round Motor Run Capacitor TP-CAP-40/440R-A
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
In stock
In most items, small items ship same day. Complete systems ship next business day.
$38.68
-
Need help? (888) 292-0874
- Free shipping — most items ship by the next day
Secure payment
VISA MC AMEX DISC PayPal Affirm CHECK
Quick specs
Capacitance
40 MFD
Type
Motor run capacitor
Voltage
370/440 VAC
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
Reliable OEM-quality designed for continuous-duty HVAC applications. This single-section capacitor delivers precise phase shift for permanent split capacitor (PSC) motors, helping compressors, blower motors, and condenser fans start and run efficiently.
Key Features
- 40 microfarad (µF / MFD) capacitance with tight ±3% tolerance for accurate motor performance
- Dual voltage rating: 370/440 VAC — safely replaces both 370V and 440V capacitors
- Round aluminum case with quick-connect (QC) terminals for easy installation
- Built to meet EIA-456-A standards and UL 810 requirements
- Internal pressure interrupter / protection rated to 10,000 AFC for added safety
- 50/60 Hz operation
- Long service life: rated 60,000 hours at 70°C
- Operating temperature range: –40°C to +70°C (–40°F to 158°F)
- Aluminum oil-filled construction for durability in demanding environments
Benefits
- Restores proper motor torque and reduces the risk of overheating, hard starting, or failure
- Universal voltage compatibility simplifies inventory — one part covers both common voltage ratings
- High reliability and consistent capacitance help minimize callbacks
- Compact round design fits most standard mounting locations in residential and light commercial equipment
- Protects motors and improves system efficiency when the original capacitor has degraded or failed
Specifications
| Attribute | Value |
|---|---|
| Capacitance | 40 MFD (µF) |
| Voltage | 370/440 VAC |
| Type | Single Run |
| Shape | Round |
| Frequency | 50/60 Hz |
| Tolerance | ±3% |
| Operating Temperature | –40°C to +70°C |
| Rated Life | 60,000 hours @ 70°C |
| Approvals | UL Recognized, meets EIA-456-A |
| Case Material | Aluminum |
| Terminals | Quick-connect (QC) |
| Dimensions (approx.) | 4.8″ L × 2.07″ dia. (121.9 mm × 52.6 mm) |
| Weight | ~0.5 lb (0.23 kg) |
Compatibility
Suitable for air conditioners, heat pumps, furnaces, air handlers, packaged units/RTUs, and other HVAC equipment that require a 40 MFD single run capacitor. Commonly used on compressor or blower/fan motors.
Can replace many equivalent 40 MFD 370V or 440V round (and often oval, depending on mounting space) capacitors from various OEMs. Always verify the original capacitor’s microfarad rating, voltage, and physical dimensions/mounting style before installation. Shape primarily affects mounting; electrical ratings must match.
Note: Proper installation by a qualified technician is recommended.
Key features
- Single Run Capacitor — 40 MFD rating
- 370/440 VAC Rated — works in either application
- Round Aluminum Can — fits standard mounting brackets
- Reliable Motor Operation — for compressors and fan motors
Why homeowners choose NAW
Genuine OEM parts
Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.
Easy online ordering
Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.
30-day hassle-free returns
Ordered the wrong part? Send it back within 30 days.
Help when you need it
Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Specifications
Frequency 50/60 Hz
Shape Round
Case Material Aluminum, oil-filled
Tolerance ±3%
Operating Temp Range -40°C to +70°C
Rated Life 60,000 hours @ 70°C
Dimensions Approx. 4.8" L x 2.07" dia. (121.9 mm x 52.6 mm)
Weight ~0.5 lb (0.23 kg)
Terminals Quick-connect (QC)
Fault Protection 10,000 AFC
Customer reviews
What buyers are saying
Verified reviews from customers who purchased this product.
5.0
4 verified reviews
PJ
Peyton J
The 40 MFD 370 or 440 VAC Single Run Capacitor in a round shape is a game-changer for my HVAC system, providing excellent performance at an unbelievably low price. Installation was straightforward, and my air conditioner now runs smoother and more efficiently, keeping my home consistently cool without any issues.
MW
Malik W
I recently purchased the 40 MFD 370 or 440 VAC Single Run Capacitor – Round, and I couldn’t be more thrilled with the excellent price, coupled with the remarkable performance and outstanding quality of this equipment—it’s an absolute steal!
G
Gianni
I recently purchased the 40 MFD 370 or 440 VAC Single Run Capacitor – Round, and I’m thrilled with the exciting surprise of its excellent price for such a crucial component. The unbeatable affordability, coupled with the capacitor’s reliable performance, makes it an outstanding investment, ensuring optimal efficiency for my system at an unexpectedly great value.
A
Adrian
The 40 MFD 370 or 440 VAC Single Run Capacitor – Round is a gem in electrical components! Offering stellar performance at an excellent price point, this capacitor ensures top-notch efficiency and reliability in various electrical systems, making it an absolute steal for anyone seeking reliable performance.
