MARS 12778 Run Capacitor
The MARS 12778 Run Capacitor is a standard-setting solution for HVACR technicians requiring a reliable 25/5 Microfarad 440Vac Round Dual Run Capacitor. Built to withstand the rigors of continuous operation in residential and commercial condensers, this dual run capacitor efficiently manages both the compressor and the condenser fan motor from a single, space-saving unit. Its design features an aluminum canister with a rolled edge for superior vibration resistance and metallized polypropylene film for advanced dielectric thermal stability. Rated for both 370V and 440V applications, this HVAC motor run capacitor operates across an ambient temperature range from -40°C to 70°C, ensuring phase-shift consistency during peak summer loads. For professionals troubleshooting a failed AC capacitor, the 12778 provides a 1:1 OEM replacement fit for common MARS 12778 series and Jard-equivalent specifications, maintaining optimal amperage draw and motor torque without the risk of early breakdown or system cycling issues.
Key Benefits- Dual-Function Support: Supplies 25 MFD for the compressor (HERM) and 5 MFD for the fan motor (FAN) to maximize startup torque and running efficiency.
- Voltage Versatility: Dual-rated for 370 or 440 VAC applications, offering a broad compatibility range for multiple system brands.
- Contractor-Ready Build: Features a rugged aluminum shell and non-PCB oil construction with an internal physical interrupter for safety.
- High Temperature Tolerance: Engineered to maintain capacitance within a +/- 5% tolerance even in high-heat rooftop or desert environments.
- Universal Terminal Layout: Includes standard 1/4 inch quad terminals for simplified, error-free wiring in tight control boxes.
Can I use a 440V capacitor if my original was 370V?
Yes. While you must never use a lower voltage capacitor, a 440V unit can safely replace a 370V unit as it is designed to handle higher electrical stress.
What are the signs that my 25/5 dual run capacitor has failed?
Common symptoms include a compressor that "hums" but won't start, the fan motor running slowly, or physical distortion such as a "bulged" or leaking top on the capacitor casing.
Is the shape of the capacitor critical for replacement?
The round shape of the 12778 is standard for most modern units. While the electrical specs (25/5 MFD) are paramount, ensure the 2-inch diameter fits your existing mounting strap or bracket.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $7.62
-65%$7.62
$2.67MARS 12778 Run Capacitor
The MARS 12778 Run Capacitor is a standard-setting solution for HVACR technicians requiring a reliable 25/5 Microfarad 440Vac Round Dual Run Capacitor. Built to withstand the rigors of continuous operation in residential and commercial condensers, this dual run capacitor efficiently manages both the compressor and the condenser fan motor from a single, space-saving unit. Its design features an aluminum canister with a rolled edge for superior vibration resistance and metallized polypropylene film for advanced dielectric thermal stability. Rated for both 370V and 440V applications, this HVAC motor run capacitor operates across an ambient temperature range from -40°C to 70°C, ensuring phase-shift consistency during peak summer loads. For professionals troubleshooting a failed AC capacitor, the 12778 provides a 1:1 OEM replacement fit for common MARS 12778 series and Jard-equivalent specifications, maintaining optimal amperage draw and motor torque without the risk of early breakdown or system cycling issues.
Key Benefits- Dual-Function Support: Supplies 25 MFD for the compressor (HERM) and 5 MFD for the fan motor (FAN) to maximize startup torque and running efficiency.
- Voltage Versatility: Dual-rated for 370 or 440 VAC applications, offering a broad compatibility range for multiple system brands.
- Contractor-Ready Build: Features a rugged aluminum shell and non-PCB oil construction with an internal physical interrupter for safety.
- High Temperature Tolerance: Engineered to maintain capacitance within a +/- 5% tolerance even in high-heat rooftop or desert environments.
- Universal Terminal Layout: Includes standard 1/4 inch quad terminals for simplified, error-free wiring in tight control boxes.
Can I use a 440V capacitor if my original was 370V?
Yes. While you must never use a lower voltage capacitor, a 440V unit can safely replace a 370V unit as it is designed to handle higher electrical stress.
What are the signs that my 25/5 dual run capacitor has failed?
Common symptoms include a compressor that "hums" but won't start, the fan motor running slowly, or physical distortion such as a "bulged" or leaking top on the capacitor casing.
Is the shape of the capacitor critical for replacement?
The round shape of the 12778 is standard for most modern units. While the electrical specs (25/5 MFD) are paramount, ensure the 2-inch diameter fits your existing mounting strap or bracket.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The MARS 12778 Run Capacitor is a standard-setting solution for HVACR technicians requiring a reliable 25/5 Microfarad 440Vac Round Dual Run Capacitor. Built to withstand the rigors of continuous operation in residential and commercial condensers, this dual run capacitor efficiently manages both the compressor and the condenser fan motor from a single, space-saving unit. Its design features an aluminum canister with a rolled edge for superior vibration resistance and metallized polypropylene film for advanced dielectric thermal stability. Rated for both 370V and 440V applications, this HVAC motor run capacitor operates across an ambient temperature range from -40°C to 70°C, ensuring phase-shift consistency during peak summer loads. For professionals troubleshooting a failed AC capacitor, the 12778 provides a 1:1 OEM replacement fit for common MARS 12778 series and Jard-equivalent specifications, maintaining optimal amperage draw and motor torque without the risk of early breakdown or system cycling issues.
Key Benefits- Dual-Function Support: Supplies 25 MFD for the compressor (HERM) and 5 MFD for the fan motor (FAN) to maximize startup torque and running efficiency.
- Voltage Versatility: Dual-rated for 370 or 440 VAC applications, offering a broad compatibility range for multiple system brands.
- Contractor-Ready Build: Features a rugged aluminum shell and non-PCB oil construction with an internal physical interrupter for safety.
- High Temperature Tolerance: Engineered to maintain capacitance within a +/- 5% tolerance even in high-heat rooftop or desert environments.
- Universal Terminal Layout: Includes standard 1/4 inch quad terminals for simplified, error-free wiring in tight control boxes.
Can I use a 440V capacitor if my original was 370V?
Yes. While you must never use a lower voltage capacitor, a 440V unit can safely replace a 370V unit as it is designed to handle higher electrical stress.
What are the signs that my 25/5 dual run capacitor has failed?
Common symptoms include a compressor that "hums" but won't start, the fan motor running slowly, or physical distortion such as a "bulged" or leaking top on the capacitor casing.
Is the shape of the capacitor critical for replacement?
The round shape of the 12778 is standard for most modern units. While the electrical specs (25/5 MFD) are paramount, ensure the 2-inch diameter fits your existing mounting strap or bracket.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
