Motor Start Capacitor · 590-708 MFD 110-125 VAC Round Case · Supco CS590-708X110
Motor start capacitor for intermittent-duty motor starting applications requiring 590-708 MFD at 110-125 VAC. Commonly used as a replacement start capacitor on compatible motors and compressors; always match microfarad range, voltage rating, and physical size to the original part.
What this product is for
The Supco CS590-708X110 is a round motor start capacitor used to provide the extra starting torque needed to bring compatible single-phase motors or compressors up to speed. It is intended for intermittent-duty start circuits, not continuous run duty.
Use for
- Replacing a failed motor start capacitor with the same microfarad range and equal or matching voltage rating
- Compatible motor and compressor start circuits that call for 590-708 MFD
- Service and maintenance work where case size and terminal style must match the original part
Avoid for
- Run capacitor applications
- Continuous-duty capacitor circuits
- Installations where the required MFD range, voltage, or dimensions do not match the original specification
Best for
HVACR service, motor repair, compressor service, and maintenance stock where a 590-708 MFD start capacitor rated 110-125 VAC is specified. This is a practical replacement choice when you need to match the original electrical rating and round can form factor.
Installed in
Typically installed inside equipment housings, motor compartments, or control sections on compatible motors and compressors. Approximate case size is 1-13/16 in diameter x 3-3/8 in high (about 46 mm x 86 mm), which can matter for fit in tight service spaces.
Why this product exists
Some motors need a high-capacitance start capacitor to create the phase shift and starting torque required at startup. A start capacitor is normally taken out of the circuit after startup by the motor's switching method. Actual performance depends on the motor design, switching components, installation condition, and the original equipment specification.
Compared with similar products
Compared with a run capacitor, a start capacitor has a much higher MFD value and is used only during startup. When replacing one, electricians and service technicians typically match three things first: the specified MFD range, the voltage rating, and the physical dimensions or terminal arrangement. If any of these differ, fit or starting performance may be affected.
Specifications
- Brand: Supco
- Manufacturer part number: CS590-708X110
- Product type: Motor start capacitor
- Capacitance: 590-708 MFD
- Voltage rating: 110-125 VAC
- Case style: Round
- Approximate dimensions: 1-13/16 in dia. x 3-3/8 in H (about 46 mm x 86 mm)
- Application: Intermittent-duty motor starting on compatible equipment
- Cross-reference noted by distributors: replacement for equivalent 590-708 MFD 110-125 VAC start capacitor listings
- Dimensions1-13/16 in dia. x 3-3/8 in H (about 46 mm x 86 mm)
- Capacitance590-708 MFD
- Voltage110-125 VAC
- ApplicationIntermittent-duty motor starting on compatible equipment
- Case StyleRound
- BrandsSupco
- Stock in Flesherton2
Aptico Supply Delivery
Fast Electrical Supply Delivery Across Ontario
Local delivery routes, pickup options, and contractor-focused service from our Elmira and Flesherton locations.
Delivery Built Around Electrical Contractors
Aptico Supply helps electricians, contractors, and commercial buyers get the electrical materials they need without unnecessary delays. Whether you are ordering for a jobsite, restocking service inventory, or arranging pickup, our delivery options are designed to keep work moving.
Free Daily Delivery
Free daily delivery is available for larger contractor accounts.
- Order by 9:00 AM for morning delivery
- Order by 2:00 PM for afternoon delivery
- Available in qualifying local delivery areas
Free Weekly Delivery
Free weekly delivery is available for smaller accounts in select service areas.
- Elmira area delivery: Tuesday
- Flesherton area delivery: Thursday
- Order by 11:00 AM on the route day
Pickup Options
Pickup is available from our Ontario locations for customers who prefer to collect their order directly.
- Elmira pickup available
- Flesherton pickup available
- Call ahead for large or special-order items
Local Delivery Areas
See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.
Delivery Questions
Do you offer free delivery?
Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.
Can I pick up my order?
Yes, pickup is available from our Elmira and Flesherton locations.
Do delivery charges apply?
Delivery charges may apply outside regular local routes, for smaller orders, or for oversized and heavy items.
Can you deliver to jobsites?
Yes, jobsite delivery may be available depending on the order size, location, and delivery schedule.
Need Electrical Supplies Delivered?
Contact Aptico Supply to confirm your delivery options, pickup availability, or contractor account eligibility.
Contact Aptico SupplyWe accept the following payment methods:
To replace this text with your store's actual info on payment methods, go to "Design -> Menus & Pages -> Product Page Tabs" and edit the Payment methods page.
This page is intended for your policy regarding returns and refunds.
Here you can provide information as to what products can be returned, how many days your customers have to return their purchase, whether they will receive a refund in the original form of payment, a replacement or a store credit, who pays for the shipping of the previously purchased products to the store, and so on.
To replace this text with your store's actual return policy, go to "Design -> Menus & Pages -> Product Page Tabs" and edit the Return Policy page.