MARS 12948 Run Capacitor
The MARS 12948 Run Capacitor is a standard-setting solution for HVACR contractors requiring 45 MFD capacitance with a high-tolerance 440VAC rating. Engineered as a single section run capacitor for continuous-duty applications, this JARD 12948 model is a non-PCB component featuring a hermetically sealed aluminum case to prevent dielectric breakdown in harsh environments. As a veteran-grade 45 microfarad 440V oval capacitor, it is designed to support PSC (Permanent Split Capacitor) motors in compressors and fan assemblies, providing the necessary phase shift for efficient motor operation and heat dissipation. The MARS 12948 is dual-rated for 370/440V applications, making it a versatile universal HVAC capacitor replacement that reduces truck stock requirements while ensuring UL and CSA approved safety with an integrated pressure-sensitive interrupter (PSI).
Key Benefits
- Broad Compatibility: Replaces common 45 MFD industry standards, including GE/Genteq, Supco, and Packard models, across residential and commercial HVAC units.
- Enhanced Thermal Stability: Rated for an operational temperature range of -40°C to +70°C, ensuring long-term reliability in rooftop condensers and outdoor enclosures.
- Superior Safety: Features a built-in pressure-sensitive interrupter that safely disconnects the capacitor in the event of an internal fault or over-pressure condition.
- Dual-Voltage Versatility: The 440VAC rating allows for safe installation in both 370V and 440V circuits, providing a higher dielectric margin for line voltage fluctuations.
- Standardized Form Factor: The oval capacitor design with 1/4 inch quick-connect terminals facilitates rapid drop-in installation for field service repairs.
Common Questions
Can I use this 440VAC capacitor to replace a 370VAC unit?
Yes. In HVACR applications, you can always upgrade the voltage rating. A 440 volt run capacitor provides thicker internal insulation than a 370V unit, which often leads to a cooler operating profile and increased durability under continuous load.
How do I confirm if my motor needs a 45 MFD capacitor?
Check the motor nameplate for the "CAP" or "MFD" specification. It is critical to match the 45 microfarad rating exactly (within ±6% tolerance) to maintain the correct torque and prevent the motor windings from overheating.
What is the difference between this and a start capacitor?
A run capacitor like the MARS 12948 is designed for continuous duty and stays in the circuit while the motor is running. Start capacitors are for intermittent duty only and must be removed from the circuit once the motor reaches speed.
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: $9.61
-65%$9.61
$3.36MARS 12948 Run Capacitor
The MARS 12948 Run Capacitor is a standard-setting solution for HVACR contractors requiring 45 MFD capacitance with a high-tolerance 440VAC rating. Engineered as a single section run capacitor for continuous-duty applications, this JARD 12948 model is a non-PCB component featuring a hermetically sealed aluminum case to prevent dielectric breakdown in harsh environments. As a veteran-grade 45 microfarad 440V oval capacitor, it is designed to support PSC (Permanent Split Capacitor) motors in compressors and fan assemblies, providing the necessary phase shift for efficient motor operation and heat dissipation. The MARS 12948 is dual-rated for 370/440V applications, making it a versatile universal HVAC capacitor replacement that reduces truck stock requirements while ensuring UL and CSA approved safety with an integrated pressure-sensitive interrupter (PSI).
Key Benefits
- Broad Compatibility: Replaces common 45 MFD industry standards, including GE/Genteq, Supco, and Packard models, across residential and commercial HVAC units.
- Enhanced Thermal Stability: Rated for an operational temperature range of -40°C to +70°C, ensuring long-term reliability in rooftop condensers and outdoor enclosures.
- Superior Safety: Features a built-in pressure-sensitive interrupter that safely disconnects the capacitor in the event of an internal fault or over-pressure condition.
- Dual-Voltage Versatility: The 440VAC rating allows for safe installation in both 370V and 440V circuits, providing a higher dielectric margin for line voltage fluctuations.
- Standardized Form Factor: The oval capacitor design with 1/4 inch quick-connect terminals facilitates rapid drop-in installation for field service repairs.
Common Questions
Can I use this 440VAC capacitor to replace a 370VAC unit?
Yes. In HVACR applications, you can always upgrade the voltage rating. A 440 volt run capacitor provides thicker internal insulation than a 370V unit, which often leads to a cooler operating profile and increased durability under continuous load.
How do I confirm if my motor needs a 45 MFD capacitor?
Check the motor nameplate for the "CAP" or "MFD" specification. It is critical to match the 45 microfarad rating exactly (within ±6% tolerance) to maintain the correct torque and prevent the motor windings from overheating.
What is the difference between this and a start capacitor?
A run capacitor like the MARS 12948 is designed for continuous duty and stays in the circuit while the motor is running. Start capacitors are for intermittent duty only and must be removed from the circuit once the motor reaches speed.
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
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Description
The MARS 12948 Run Capacitor is a standard-setting solution for HVACR contractors requiring 45 MFD capacitance with a high-tolerance 440VAC rating. Engineered as a single section run capacitor for continuous-duty applications, this JARD 12948 model is a non-PCB component featuring a hermetically sealed aluminum case to prevent dielectric breakdown in harsh environments. As a veteran-grade 45 microfarad 440V oval capacitor, it is designed to support PSC (Permanent Split Capacitor) motors in compressors and fan assemblies, providing the necessary phase shift for efficient motor operation and heat dissipation. The MARS 12948 is dual-rated for 370/440V applications, making it a versatile universal HVAC capacitor replacement that reduces truck stock requirements while ensuring UL and CSA approved safety with an integrated pressure-sensitive interrupter (PSI).
Key Benefits
- Broad Compatibility: Replaces common 45 MFD industry standards, including GE/Genteq, Supco, and Packard models, across residential and commercial HVAC units.
- Enhanced Thermal Stability: Rated for an operational temperature range of -40°C to +70°C, ensuring long-term reliability in rooftop condensers and outdoor enclosures.
- Superior Safety: Features a built-in pressure-sensitive interrupter that safely disconnects the capacitor in the event of an internal fault or over-pressure condition.
- Dual-Voltage Versatility: The 440VAC rating allows for safe installation in both 370V and 440V circuits, providing a higher dielectric margin for line voltage fluctuations.
- Standardized Form Factor: The oval capacitor design with 1/4 inch quick-connect terminals facilitates rapid drop-in installation for field service repairs.
Common Questions
Can I use this 440VAC capacitor to replace a 370VAC unit?
Yes. In HVACR applications, you can always upgrade the voltage rating. A 440 volt run capacitor provides thicker internal insulation than a 370V unit, which often leads to a cooler operating profile and increased durability under continuous load.
How do I confirm if my motor needs a 45 MFD capacitor?
Check the motor nameplate for the "CAP" or "MFD" specification. It is critical to match the 45 microfarad rating exactly (within ±6% tolerance) to maintain the correct torque and prevent the motor windings from overheating.
What is the difference between this and a start capacitor?
A run capacitor like the MARS 12948 is designed for continuous duty and stays in the circuit while the motor is running. Start capacitors are for intermittent duty only and must be removed from the circuit once the motor reaches speed.
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.
