
CR70X440R Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $17.99 | Condition is New, ClimaTek Round Single Run Capacitor 70 MFD 370 440 VAC Volt Fits Supco CR70x440R, FREE SHIPPING | ![]() |
![]() | $19.99 | Condition is New, ClimaTek Round Single Run Capacitor 70 MFD 370 440 VAC Volt Fits Supco CR70x370R, FREE SHIPPING | ![]() |
![]() | $22.95 | Condition is New, 70 uf MFD Round 370 / 440 Volt Capacitor Fits Supco CR70x370R CR70x440R, FREE SHIPPING | ![]() |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $18.00 | Condition is Open box, SUPCO CR70X440R Run Capacitor 70 MFD 440 Volts, FREE SHIPPING | 100.0% |

The SUPCO CR70X440R capacitor is a round aluminum electrolytic capacitor with a capacitance value of 70 microfarads (mF) and a voltage rating of 440 volts (V). This capacitor is manufactured by SUPCO, a reputable brand known for producing high-quality electronic components.
The CR70X440R capacitor is designed with a round shape and has a diameter of approximately 70mm (2.75 inches) and a height of around 115mm (4.53 inches). The capacitor's aluminum case provides robust protection against external impacts, ensuring its durability in various applications.
The electrolytic capacitor utilizes a high-purity aluminum anode and a special electrolyte, which allows for efficient energy storage and stable performance over an extended period. The capacitor's capacitance value of 70mF is suitable for applications requiring large energy storage and filtering, such as power supplies, voltage regulators, and radio-frequency (RF) circuits.
The voltage rating of 440V ensures that this capacitor can handle high voltage applications without risk of failure or damage. The CR70X440R capacitor features a temperature range between -30 C and 70 C (-22 F and 158 F), making it suitable for use in various environments.
The SUPCO CR70X440R capacitor comes with lead terminals that allow for easy connection to circuit components. The terminals are securely soldered to the capacitor, ensuring a reliable electrical connection. The capacitor also features a visible maximum voltage marking on its sidewall, which makes it easy to identify the correct orientation for installation.
This capacitor is RoHS compliant, meaning it contains no restricted substances, and is lead-free. It is also X2 rated, which indicates a higher rupture voltage than the standard rating and increased safety for the user. With its high capacitance value, robust voltage rating, and reliable construction, the SUPCO CR70X440R capacitor is an excellent choice for various electronic applications.
The SUPCO CR70X440R capacitor is a large, round capacitor with a capacity of 70 mF and a voltage rating of 440 volts. Here are some potential pros and cons of purchasing this capacitor:
Pros:1. High Capacitance: With a capacitance of 70 mF, this capacitor is suitable for applications that require large energy storage, such as power factor correction, radio-frequency (RF) circuits, and filtering.
2. High Voltage Rating: A voltage rating of 440 volts makes this capacitor suitable for use in high-voltage electrical systems, such as industrial power supplies, transformer rectifiers, and motor starting circuits.
3. Durable Construction: The SUPCO CR70X440R capacitor is designed with a robust aluminum electrolytic case, which provides protection against electrical and mechanical stresses. It also features a pressure relief valve that prevents the case from rupturing in case of overvoltage.
Cons:1. Size and Weight: Due to its large capacitance and high voltage rating, the SUPCO CR70X440R capacitor is quite large and heavy. This can make it difficult to install in tight spaces and may require additional support or mounting hardware.
2. Cost: Large capacitors with high voltage ratings can be more expensive than smaller, lower-voltage capacitors. The SUPCO CR70X440R capacitor is no exception, and its price may be a consideration for some buyers.
3. Leakage Rates: Aluminum electrolytic capacitors, such as the SUPCO CR70X440R, are prone to leakage over time due to the electrolyte inside the capacitor drying out. This can lead to a gradual decrease in capacitance and ultimately failure of the capacitor.
Conclusion:The SUPCO CR70X440R capacitor is a high-performance component suitable for applications that require large energy storage and high voltage ratings. Its durable construction, pressure relief valve, and robust aluminum case make it a reliable choice for industrial and power electronics applications. However, its large size and weight, as well as its relatively high cost, may be drawbacks for some buyers. Ultimately, the decision to purchase this capacitor will depend on the specific requirements of your application and your budget.
Recommendation:If you require a large capacitor with a high voltage rating for your electrical system, the SUPCO CR70X440R is a good option to consider. However, be sure to carefully evaluate the size and weight constraints of your installation and factor in the cost of the capacitor into your budget. If the size, weight, or cost are prohibitive, you may want to explore other capacitor options with similar capacitance and voltage ratings but smaller size or lower cost.
Details:
Round motor run capacitor oem compatible CR70X440R 70 mfd, 440 vac: this brand new CR70X440R is engineered for reliable performance in hvac fan motors, blowers, and condenser units requiring a volt run capacitor. Operating temperature: -40 f to 185 -40 c 85. Blower motor humming or overheating. Drawn steel case for durability and corrosion resistance.
Type two motor run capacitor. Manufactured by Supco in Nanchang, Jiangxi, china. Condition: brand new unused. Built with a rugged drawn steel case and filled non PCB biodegradable synthetic oil, this capacitor delivers long lasting stability safe operation in demanding environments.
Non PCB biodegradable synthetic oil for environmental safety. Shape: round. Always match mfd, voltage , and case to your original capacitor. Common fixes: outdoor condenser fan not starting.
Mfd tolerance: 5% for stable performance. Physical interrupter for overload protection. Photograph wire placement to ensure correct re connection. Discharge the old capacitor safely before handling.
Match mfd and voltage rating exactly never use a lower. Terminals: quad blade quick connect. System tripping overloads. Designed to meet or exceed oem performance, this capacitor includes a physical safety interrupter, quad blade quick connect terminals, and wide operating temperature range suitable for residential light commercial hvac systems.
Reconnect wires to the correct terminals and test system operation. Secure the new capacitor firmly in mounting strap or bracket. Specifications: capacitance: 70 mfd. Bulged, leaking, or rusted original capacitor.
Weak or intermittent motor performance. Installation tips: disconnect power at the breaker and verify no voltage is present. Quad blade quick connect terminals for easy installation.
specifications maxohvac:
- brand: Supco
- mpn: Cr70x440r
- type: Run Capacitor, Round
- country of origin: China
- upc: 687152177738
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
returns maxohvac:
- time: 30 days
- method: money back
- policy: returns accepted
- paid by: seller
shipping maxohvac:
- transit: 3-7 days
- type: calculated
- service: usps ground advantage, ups ground, ups 2nd day air, usps priority mail
- class: standard, expedited
- carrier: usps, ups
payments maxohvac:
- credit card: diners-club
- other
- wallet: apple-pay
seller maxohvac:
- city: baldwinsville, new york
- rating: 99.5%
- # reviews: 331756
offer maxohvac:
- sold #: 11
- prices: $17.99–$22.95
- item condition:
- New
- Open box
- options: ship-to-home
- in stock #: 4
- started: march 2, 2026
- availability: in stock
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