--- 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: "191 Lei" currency: RON in_stock: true category: "Power Well" url: https://www.desertcart.ro/products/42420116-40-5-mfd-uf-370-vac-or-440-volt-dual store_origin: RO region: Romania --- # 440V max voltage 40+5 µF dual capacitance Built to toughest USA standards 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:** 191 Lei **Availability:** ✅ In Stock ## Summary > ⚡ Power your cool with precision and durability! ## 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?** 191 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/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 - • **Dual Power Boost:** Supports fan & compressor motors simultaneously for peak AC efficiency - • **Compact & Durable:** 2" diameter x 5.25" tall round design built to withstand -40°C to 70°C extremes - • **Snap-In Convenience:** Easy installation with snap-in mount, no hassle replacements for multiple part numbers - • **Universal Voltage Upgrade:** 440V rating replaces both 370V & 440V capacitors—future-proof your system - • **Certified Quality Assurance:** Meets EIA-456-A & IEC 60252-1:2001 standards—trusted USA-grade reliability ## Overview The PowerWell PW-40/5/440 is a premium dual run round capacitor designed for condenser AC units and heat pumps. Featuring a 40+5 microfarad capacitance and a robust 440V rating, it replaces both 370V and 440V capacitors, ensuring enhanced longevity and performance. Built to rigorous USA standards and certified under EIA-456-A and IEC 60252-1:2001, this compact capacitor operates reliably across extreme temperatures (-40°C to 70°C). Its snap-in mount design simplifies installation, making it the go-to upgrade for professional-grade HVAC maintenance. ## 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. ## 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 | #11,381 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #70 in Industrial Electrical Capacitors | | Brand Name | PowerWell | | Capacitance | 40 microfarad | | Customer Reviews | 4.7 4.7 out of 5 stars (2,156) | | Item Dimensions W x H | 5.25"W x 2"H | | Item Shape | Round | | Manufacturer | PowerWell | | Material Type | Copper | | Maximum Storage Temperature | 71 °C | | Maximum Voltage | 440 volts | | Model | PW-40/5/440 | | Mounting Type | Snap-In Mount | | Operating Voltage | 440 volts | | Part Number | PW-40/5/440 | | UPC | 817506023019 | | Upper Temperature Rating | 70 °C | ## Product Details - **Brand:** PowerWell - **Capacitance:** 40 microfarad - **Material:** Copper - **Maximum Storage Temperature:** 71 °C - **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) ![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 2](https://m.media-amazon.com/images/I/41qmm9kk7ML.jpg) ## 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.ro/products/42420116-40-5-mfd-uf-370-vac-or-440-volt-dual](https://www.desertcart.ro/products/42420116-40-5-mfd-uf-370-vac-or-440-volt-dual) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-08-02*