--- product_id: 42420116 title: "40 + 5 MFD uf 370 VAC or 440 Volt Dual Run Round Capacitor PW-40/5/R for Condenser Straight Cool or Heat Pump Air Conditioner 40/5 Micro Farad" brand: "powerwell" price: "฿1513" currency: THB in_stock: true reviews_count: 10 category: "Power Well" url: https://www.desertcart.co.th/products/42420116-40-5-mfd-uf-370-vac-or-440-volt-dual store_origin: TH region: Thailand --- # 40/5 MFD Dual Run -40C to +70C 40 + 5 MFD uf 370 VAC or 440 Volt Dual Run Round Capacitor PW-40/5/R for Condenser Straight Cool or Heat Pump Air Conditioner 40/5 Micro Farad **Brand:** powerwell **Price:** ฿1513 **Availability:** ✅ In Stock ## Summary > 🔧 Power Up Your Comfort with Confidence! ## Quick Answers - **What is this?** 40 + 5 MFD uf 370 VAC or 440 Volt Dual Run Round Capacitor PW-40/5/R for Condenser Straight Cool or Heat Pump Air Conditioner 40/5 Micro Farad by powerwell - **How much does it cost?** ฿1513 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/42420116-40-5-mfd-uf-370-vac-or-440-volt-dual) ## Best For - powerwell enthusiasts ## Why This Product - Trusted powerwell brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Manufactured to the toughest USA standards for reliability. - • **Compact Powerhouse:** Space-saving design: 2" diameter x 5-1/4" tall. - • **Quality You Can Trust:** Fanatical quality control ensures peace of mind with every order. - • **Unmatched Versatility:** Replaces both 370 & 440 VAC capacitors seamlessly. - • **Extreme Temperature Resilience:** Operates flawlessly from -40°F to 158°F. ## Overview The PowerWell 40 + 5 MFD uf 370 VAC or 440 Volt Dual Run Round Capacitor is a high-performance solution for your air conditioning needs, designed to replace both 370 and 440 VAC capacitors. With a compact size and an impressive operating temperature range, this capacitor meets rigorous USA standards, ensuring reliability and quality for your cooling or heating systems. ## Description A capacitor is an electric component that temporarily stores an electrical charge. A dual "run capacitor" supports two electric motors, such as a fan motor and a compressor. Round dual run capacitors are used to start and run the unit more efficient. It saves space by combining two physical capacitors into one case. The dual capacitor has three terminals labeled "C", "FAN", and "HERM", which stand for the *C*ommon, Fan, and *HERM*etically sealed compressor.Dual capacitors come in a variety of sizes, depending on the capacitance (µF = MFD = micro farad), such as 60 plus 5 µF, and also the voltage. A 440 volt capacitor can be used in place of a 370 volt, as it is build better, but the 370 can’t be used in place of a 440 volt. It will work for a while and will fail prematurely, as exceeding the capacitor's rated voltage will cause the dielectric to break down and the capacitor to short out. Same as an electric wire- 600V rated wire is better than 300V one .The capacitance(µF or MFD or micro farad) must be the same or stay within 10%+ or 5%- of its original value . Example: 40 µF cap can be substituted by 38 - 44 MFD with the same or better voltage ratings capacitor.If your fan is working but compressor not, or the capacitor is bulged on top most likely your capacitor is defective. Round capacitor can be used to substitute oval shape one with the same MFD AND Volt specs.You will ask “Why I need a Cap that is rated 440V in my A/C?”Answer: You need to realize that a motor is an inductive device. When the supply voltage is applied to the motor run winding, the voltage across the start winding will be increased to a higher voltage value. A motor acts like a transformer with the run winding acting as the primary and the start winding acting as the secondary. This is why the capacitor has a much higher voltage rating than the 230 being the supply voltage.If a Capacitor is not EIA-456-A approved means it is NOT approved for USA market. Review: Bargain quality - Good quality and works great with current AC. It's a bargain price as compared to local hardware stores selling at double the price for pick up. Ya know capacitors only come from a few manufacturers and results in many name brands. Review: Recommend - Work good. ## Features - 40/5 uf or 40/5 MFD micro farad 440 Volt Dual Run Round AC Capacitor . Replaces BOTH 370 & 440 VAC capacitors - Can size measures 2" diameter x 5-1/4" tall. Operating temperature range -40 C. to +70 C/ -40F to 158F - Built to the TOUGHEST USA standards for AC motor run capacitors including EIA-456-A and IEC 60252-1:2001 - We are extremely passionate about our products and are fanatical about quality control in our workshops. ORDER NOW with peace of mind. No Catches - Replacement for 97F9838 , Z97F938 , 97F9838BZ3 , 12786 , RC0108 , 97F9849 , C3DR405 , Z97F9848BZ2 , P291-4054RS , C3405R , HCKS400D050R440Z , P291-4053RS , TT-CAP-40/5/440R , TRCFD405 , TP-CAP-40/5/440R , HC98JA041 , HC98CA040 , HC98CA041 , HC93CZ035 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B072HM7Z27 | | Best Sellers Rank | #4,050 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #15 in Industrial Electrical Capacitors | | Brand Name | PowerWell | | Capacitance | 40 Microfarad | | Customer Reviews | 4.7 4.7 out of 5 stars (2,142) | | Item Dimensions W x H | 5.25"W x 2"H | | Item Shape | Round | | Manufacturer | PowerWell | | Material Type | Copper | | Maximum Storage Temperature | 71 Degrees Celsius | | Maximum Voltage | 440 Volts | | Mounting Type | Snap-In Mount | | Operating Voltage | 440 Volts | | UPC | 817506023019 | | Upper Temperature Rating | 70 Degrees Celsius | ## Product Details - **Brand:** PowerWell - **Capacitance:** 40 Microfarad - **Material:** Copper - **Maximum Storage Temperature:** 71 Degrees Celsius - **Shape:** Round ## Images ![40 + 5 MFD uf 370 VAC or 440 Volt Dual Run Round Capacitor PW-40/5/R for Condenser Straight Cool or Heat Pump Air Conditioner 40/5 Micro Farad - Image 1](https://m.media-amazon.com/images/I/61jFKBkht0L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Bargain quality *by M***O on September 23, 2025* Good quality and works great with current AC. It's a bargain price as compared to local hardware stores selling at double the price for pick up. Ya know capacitors only come from a few manufacturers and results in many name brands. ### ⭐⭐⭐⭐⭐ Recommend *by R***T on March 9, 2026* Work good. ### ⭐⭐⭐⭐⭐ Good deal *by K***1 on October 20, 2025* It was one of the hottest days of the year and my central air was not working. I went immediately on Amazon andI followed the directions and brought this item for my HVAC unit outside. It came the next day! I have been a prime member for years. This item was close to the website description. Easy to install. Now my outdoor unit is running fine! Thanks, Amazon ## Frequently Bought Together - PowerWell 40 + 5 MFD uf 370 VAC or 440 Volt Dual Run Round Capacitor PW-40/5/R for Condenser Straight Cool or Heat Pump Air Conditioner 40/5 Micro Farad - VEXUNGA 45/5 uF 45+5 MFD 370V or 440V Dual Run Start Round A/C Capacitor 45 5 uF 370 440 Volt VAC CBB65B Air Conditioner Capacitors for AC Unit Fan Motor Start or Heat Pump or Condenser Straight Cool - PowerWell 45+5 MFD 45/5 uf 370 or 440 Volt Dual Run Round Capacitor PW-45/5/R for Condenser Straight Cool or Heat Pump Air Conditioner - Guaranteed to Last 5 Years --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/42420116-40-5-mfd-uf-370-vac-or-440-volt-dual](https://www.desertcart.co.th/products/42420116-40-5-mfd-uf-370-vac-or-440-volt-dual) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-22*