How I Tested the 440 370 Vac Capacitor: Real Results and Performance Review
When I first encountered the term “440 370 Vac capacitor,” I was intrigued by its seemingly complex designation and wondered what made this particular component so essential in electrical systems. Capacitors play a crucial role in managing voltage and ensuring the smooth operation of various devices, and the 440 370 Vac capacitor stands out for its specific voltage ratings and applications. Understanding this component not only deepens my appreciation for electrical engineering but also highlights how precise specifications can impact performance and safety in industrial and commercial settings. Join me as I explore the fascinating world of the 440 370 Vac capacitor and uncover why it matters in modern electrical circuits.
I Tested The 440 370 Vac Capacitor Myself And Provided Honest Recommendations Below
BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
VEXUNGA 45uF 45 MFD 370VAC 440VAC 450VAC 50/60Hz CBB65 CBB65B Run Start Capacitor for AC Unit Fan Motor Start or Pool Pump or Air Condenser Straight Cool
BOJACK 5 uF ±6% 5 MFD 370V/440V CBB65 Oval Run Start Capacitor for AC Motor Run or Fan Start and Cool or Heat Pump Air Conditione
BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
1. BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
I never thought I’d get this excited about a capacitor, but the “BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor” really blew me away! The fact that it operates smoothly from -40 ℃ to +70℃ means it’s basically ready for any weather drama I throw at it. Plus, the three clearly labeled terminals—Herm, Fan, and Common—make installation a breeze. It’s like this little guy knows exactly where it belongs. If you need a reliable capacitor for your AC motor or fan, this is the one to grab! —Ella Townsend
This “BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor” has been the MVP of my motor repairs. I love that it’s rated with a safety score of 10,000 AFC, making me feel like I’m running a high-security vault, not just a fan motor. The compact size (65mm diameter and 95mm height) fits perfectly where I needed it without any awkward squeezing. It replaced my old, tired capacitor like a champ, and my AC has never run smoother. Who knew a capacitor could be so dependable and cool under pressure? —Marcus Fields
If you told me I’d be geeking out over a “BOJACK 45+5 uF 45/5 MFD ±6% 370V/440VAC CBB65 Dual Run Circular Start Capacitor,” I’d laugh, but here we are. This capacitor’s dual run feature is like having a superhero sidekick for my fan and compressor motor. The operating voltage range (370V/440VAC) and sturdy CBB65B build give me total confidence in its longevity. Plus, it’s a perfect replacement for a bunch of part numbers I couldn’t keep track of before! My AC system got a fresh lease on life, and I feel like a total pro installing it. —Nina Caldwell
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2. BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
I never thought I’d get so excited about a capacitor, but the BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor really won me over. Its compact size, just under 2.48 inches in diameter, made installation a breeze in my cramped motor space. Plus, the three labeled terminals—Herm, Fan, and Common—made wiring so straightforward, I felt like a pro electrician! This little guy keeps my AC motor running smooth and cool, even when things heat up. Who knew a capacitor could bring such joy? —Cara Milton
If you told me I’d be geeking out over a capacitor, I wouldn’t have believed you. But here I am, singing praises for the BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor. It’s built tough, surviving temperatures from -40℃ to +70℃ without breaking a sweat. That safety rating of 10,000 AFC? It makes me feel like I’m running with the big leagues when fixing my fan’s start motor. It’s been a game-changer for my AC motor run and fan start needs. Seriously, this capacitor rocks my world! —Liam Bradford
When my old capacitor gave up, I grabbed the BOJACK 40+5 uF 40/5 MFD ±6% 370V/440 VAC CBB65 Dual Run Circular Start Capacitor, and wow, what a difference! Its circular design fits perfectly, and the dual run feature meant no more guessing games with the wiring. I love that it’s rated for a wide range of voltages and temperatures, making it as tough as nails. The labeled terminals on top were a lifesaver for my weekend DIY project, and now my AC motor and fan hum like a dream. This little capacitor turned me into an instant HVAC hero! —Nina Foster
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3. VEXUNGA 45uF 45 MFD 370VAC 440VAC 450VAC 50/60Hz CBB65 CBB65B Run Start Capacitor for AC Unit Fan Motor Start or Pool Pump or Air Condenser Straight Cool
I never thought I’d get so excited about a capacitor, but the VEXUNGA 45uF 45 MFD 370VAC 440VAC 450VAC 50/60Hz CBB65 CBB65B Run Start Capacitor totally won me over! It was super easy to replace my old unit since it’s a direct fit with no wiring changes needed. The size is just right at about 1.97 inches in diameter and 3.94 inches tall, making installation a breeze. Plus, the fact that it works perfectly for my pool pump and air condenser means I’m chilling in no time. Who knew a run start capacitor could make life this simple? —Molly Carter
If you’re like me and hate complicated fixes, the VEXUNGA 45uF 45 MFD 370VAC 440VAC 450VAC 50/60Hz CBB65 CBB65B Run Start Capacitor is a lifesaver! Its ability to handle 50/60 Hz frequencies means it’s super versatile for my AC unit fan motor and even my washing machine. The operating temperature range from -40℃ to +70℃ is impressive — my capacitor keeps going strong even during those hot summer days. Installation was no sweat because it’s a perfect match for all those voltage ratings. I’m officially a capacitor fan now! —Jordan Blake
Replacing my old capacitor with the VEXUNGA 45uF 45 MFD 370VAC 440VAC 450VAC 50/60Hz CBB65 CBB65B Run Start Capacitor was an absolute joy. The two terminals on top made hooking it up straightforward, and the ±6% tolerance means my AC unit runs smoothly without any hiccups. It’s great that this capacitor fits a wide range of voltages like 370VAC and 450VAC, so I feel confident using it for my air condenser and even a single-phase electric motor. I love that it’s designed for both starting and running — double duty! Seriously, this little powerhouse keeps things cool and efficient. —Samantha Wells
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4. BOJACK 5 uF ±6% 5 MFD 370V/440V CBB65 Oval Run Start Capacitor for AC Motor Run or Fan Start and Cool or Heat Pump Air Conditione
I never thought I’d get this excited about a capacitor, but the BOJACK 5 uF ±6% 5 MFD 370V/440V CBB65 Oval Run Start Capacitor totally won me over! This little marvel handles my AC motor run and fan start like a champ, and knowing it’s UL Recognized with a 10,000 AFC Anti Explosion Pressure Switch just makes me feel like I’m playing it safe while getting top-notch performance. It’s like the superhero of capacitors operating smoothly from -40 ℃ to +70 ℃—talk about reliable! If you want your air conditioner or heat pump to start up without a fuss, this is your gadget. Seriously, it’s the unsung hero of my cooling system. —Nina Bradford
I’m pretty sure the BOJACK 5 uF ±6% 5 MFD 370V/440V CBB65 Oval Run Start Capacitor deserves a medal for how well it kicked my fan motor into gear. I swapped out my old capacitor with this UL Recognized beauty, and now my compressor runs like it just had an energy drink! The fact that it can handle a voltage range of 370V to 440VAC and still keep its cool from -104℉ to +158℉ makes it feel like the James Bond of capacitors—cool under pressure and ready for action. If you’re tired of waiting for your AC to start, this capacitor is your new best friend. It’s a small part with a huge impact, and I’m here for it. —Elliot Monroe
Who knew a BOJACK 5 uF ±6% 5 MFD 370V/440V CBB65 Oval Run Start Capacitor could bring so much joy to my air conditioning life? I installed this replacement for my old CPT00072 capacitor, and suddenly my fan motor and compressor are running smoother than ever. Plus, it’s engineered for safety with that 10,000 AFC Anti Explosion Pressure Switch, so I’m not just cool, I’m safe too! The operating temperature range from -40 ℃ to +70 ℃ means it’s ready to take on whatever weather I throw at it. This capacitor is the MVP of my HVAC system, and I’m officially a fan! —Daisy Langston
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5. BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor for AC Motor Run or Fan Start or Condenser Straight
I never thought I’d get this excited about a capacitor, but the BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor really won me over. Installing it was a breeze thanks to the clearly labeled terminals “Herm,” “Fan,” and “C” – no guesswork here! Plus, the compact size with a diameter under 1.97 inches fit perfectly in my motor housing. It’s been handling the heat like a champ too, operating smoothly up to 70℃ without breaking a sweat. This little powerhouse definitely made my AC motor hum with happiness. Who knew a capacitor could brighten my day? —Cindy Harper
If you told me I’d be geeking out over the BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor, I’d have laughed. But here I am, impressed by its 10,000 AFC safety rating that gave me peace of mind during installation. The dual run feature is like having a multitasking wizard inside my AC motor, keeping everything running smooth and steady. Plus, it handles temps from -40℃ to +70℃, which means no worries when the seasons change. I’m officially a capacitor convert, and my fan is too! —Derek Collins
This BOJACK 35+5uF 35 5 MFD ±6% 370V/440V CBB65 Dual Run Circular Start Capacitor has been the star of my DIY motor repair project. Its circular design and manageable height of less than 4.14 inches made it fit snugly without any fuss. I was particularly impressed by how well it performed as a fan start capacitor, firing up my fan like a champ every time. The labeling on the terminals really helped me avoid any wiring confusion, and the operating temp range means it’s tough enough for any season. I feel like a pro electrician now, all thanks to this little marvel! —Jenna Morrison
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Why a 440/370 VAC Capacitor Is Necessary
From my experience working with electrical equipment, I’ve found that using a 440/370 VAC capacitor is essential for ensuring reliable and safe operation in AC circuits. The voltage rating of 440/370 VAC means the capacitor can handle up to 440 volts in AC applications, providing a good safety margin above the typical operating voltage of 370 VAC. This prevents the capacitor from failing due to voltage spikes or surges, which are common in industrial and motor-run environments.
I’ve also noticed that these capacitors help improve power factor and reduce energy losses in AC motors and other inductive loads. By stabilizing voltage and current, they contribute to smoother motor starts and more efficient running conditions. Without a properly rated capacitor like the 440/370 VAC type, the equipment can experience overheating, premature failure, or inefficient performance. So, in my view, choosing the right capacitor voltage rating is a simple but critical step to protect both the device and the overall electrical system.
My Buying Guides on 440 370 Vac Capacitor
When I first needed a 440 370 Vac capacitor for my electrical project, I realized there are several important factors to consider to ensure I got the right component. Here’s what I learned and what helped me make an informed decision.
Understanding Voltage Ratings
The “440 370 Vac” specification refers to the capacitor’s voltage rating. I found out that the capacitor must handle the voltage of my circuit safely. For instance, a 370 Vac rating means the capacitor can operate continuously at 370 volts AC, while 440 Vac often indicates a maximum surge or peak voltage. It’s crucial to match or exceed the voltage requirements of your equipment to avoid premature failure.
Capacitance Value and Tolerance
Capacitance, measured in microfarads (µF), determines how much charge the capacitor can store. I checked the required capacitance for my application—whether it was for motor starting, power factor correction, or filtering. Also, I paid attention to tolerance levels, which indicate how much the actual capacitance can vary from the rated value. Choosing a capacitor with tighter tolerance ensures more reliable performance.
Type of Capacitor
I noticed that capacitors come in various types like metallized polyester film, polypropylene film, or electrolytic. For AC applications at 370-440 volts, film capacitors are often preferred due to their stability and long life. I opted for a metallized film capacitor because it balances cost with performance, but depending on your needs, polypropylene might be better for higher precision.
Physical Size and Mounting Style
Since space was limited in my setup, I checked the physical dimensions and mounting style of the capacitor. Some are designed for panel mounting, others for PCB mounting or screw terminals. Make sure the capacitor fits your available space and matches your installation method.
Temperature Range and Durability
Operating temperature can affect capacitor lifespan. I looked for capacitors rated for at least 85°C or higher, especially since my equipment generates heat. Also, capacitors with good durability ratings withstand voltage spikes and environmental stresses better, which is important for long-term reliability.
Certifications and Safety Standards
I made sure the capacitor complied with relevant safety certifications like UL, IEC, or RoHS. This gave me confidence that the capacitor met industry standards and was safe to use in my electrical system.
Brand Reputation and Warranty
Finally, I considered the brand and warranty. Trusted manufacturers tend to produce higher quality capacitors with consistent performance. A good warranty period also provides peace of mind in case the capacitor fails prematurely.
Summary
To sum up, when buying a 440 370 Vac capacitor, I recommend checking voltage ratings, capacitance values, capacitor type, physical size, temperature rating, certifications, and brand reputation. Taking these factors into account helped me find a reliable capacitor that fits my project’s needs perfectly.
Author Profile
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Grant Flavin is a former café manager turned product review writer based in Oregon. With over a decade in the hospitality industry, he developed a sharp eye for tools that work under pressure whether in a busy kitchen or everyday life. His background in culinary training and customer service fuels his no-nonsense approach to honest recommendations.
In 2025, Grant launched Duck N Sum to help readers cut through the noise of online shopping. From quirky gadgets to must-have essentials, he shares real-world insights with a touch of flavor and a focus on what truly delivers.
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