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Description
55 uF MFD 370/440 VAC CBB65 Round Run Start Capacitor - Fits AC Motor Run, Fan Start, Heat Pump55 uF MFD 370 440VAC Round Run Start Capacitor Key Features Capacitance: 55 Microfarad (F MFD) Voltage Rating: 370V or 440V AC Tolerance: 6% Frequency: 50 60 Hz Shape: Round Construction: Oil filled metal can Terminals: in. male quick connect Safety: Contains no Polychlorinated Biphenyls (PCBs) Protection: Features an internal pressure sensitive interrupter Operating Temperature: 40C to +70C Replaces Cross Reference Part Numbers C355R C455R 97F9042
55 uF/MFD 370-440VAC Round Run Start Capacitor
Key Features
- Capacitance: 55 Microfarad (µF/MFD)
- Voltage Rating: 370V or 440V AC
- Tolerance: ±6%
- Frequency: 50/60 Hz
- Shape: Round
- Construction: Oil-filled metal can
- Terminals: ¼ in. male quick-connect
- Safety: Contains no Polychlorinated Biphenyls (PCBs)
- Protection: Features an internal pressure-sensitive interrupter
- Operating Temperature: -40°C to +70°C
Replaces / Cross-Reference Part Numbers
- C355R
- C455R
- 97F9042
- 97F9010
- 12752
Compatibility & Fitment
- Designed for continuous duty in motor run applications.
- Used in air conditioner condensers, heat pumps, furnace blowers, and other single-phase AC motors.
- Compatible with systems specifying either a 370VAC or 440VAC capacitor. A 440VAC capacitor can safely replace a 370VAC unit.
When to Replace
- The motor hums but will not start or struggles to start.
- The fan or compressor fails to turn on.
- Visible signs of damage, such as a swollen or bulging top, cracks, or leaking oil.
- Capacitance measures outside the specified tolerance range when tested with a multimeter.
Installation Tips
- Disconnect all electrical power to the equipment before servicing.
- Safely discharge the existing capacitor by shorting the terminals with a properly insulated tool.
- Confirm that the capacitance (MFD/µF) and voltage ratings are appropriate for your application.
- Ensure terminals are connected securely. Polarity is not a factor for this type of AC capacitor.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 2116 reviews
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Product Reviews
★★★★★ 5
Worth it.
Size: 8.5, Color: Crushed Clay/Gum 2
Love all my Sorels. These were really cute, good color, comfortable, warm, fit well, good quality and sturdy. I would order again.
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Fantastic Boots!
Size: 8.5, Color: Redwood/Gum 10
Completely satisfied with these boots. True to size, well made, comfortable from the get-go; not break in needed. Waterproof- really. The Red Suede has withstood a nasty winter season & still looks great. Good traction. I like the ankle height which looks good with long, mid length pants & leggings. I love the easy slip on/off aspect..made getting ready for dog walking easy. I 100%recommend!
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Definitely worth the price
Size: 6.5, Color: Black/Black
Absolutely love these boots! I originally bought them to wear in NYC in December & they did not disappoint. They were comfortable, cute, durable and worked well in the slush/snow. The traction on the bottom is also nice! They kept me warm with wool socks. I wear them almost daily now. Perfect for everyday. easy to wear with variety of outfits. Good every day shoe.
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Reviewed in the United States on January 3, 2026
★★★★★ 5
Snagged a deal
Size: 7, Color: Redwood/Gum 10
I waited and waited to get these boots! I knew I was chancing it, but they went on sale, and I snagged them! I am a size 7, and they fit nicely with socks. a little loose, barefooted, but what psycho wears boots without socks? They are comfortable and really well-made.
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Reviewed in the United States on April 8, 2026
★★★★★ 4
Cute, comfortable waterproof boots (a little snug to put on)
Size: 7, Color: Velvet Tan/Gum 2
These are really cute Chelsea-style boots and feel very comfortable once they’re on. The waterproof material is great for wet weather and the sole feels sturdy with good traction. They look stylish enough to wear casually but still feel practical for rainy days.
The only downside is they can be a little difficult to put on at first because the opening is somewhat snug, but once they’re on they fit well and feel supportive. Overall they’re a great waterproof boot and I’ve enjoyed wearing them.
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Reviewed in the United States on March 17, 2026
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