MARS 12259 Run Capacitor

The MARS 12259 Run Capacitor is a high-performance 80 MFD 440V Round Run Capacitor engineered for demanding HVACR applications. Designed to provide a continuous electrical boost, this 80 microfarad capacitor ensures consistent torque and optimal efficiency for 440Vac motor and compressor circuits. As an OEM grade component, it meets EIA-456 A standards, offering a reliable service life of up to 60,000 hours in harsh industrial and residential environments. The non-PCB, aluminum-cased design features a physical interrupter for enhanced safety during over-pressure conditions. With a 440V/370V dual voltage rating, it provides versatile compatibility across various 50/60 Hz systems. For technicians, the round run capacitor physical footprint (2.5" width) ensures a direct fit in standard mounting brackets, while the quad-blade terminals allow for quick, secure wiring on the job site. This is a critical HVAC replacement part for stabilizing current and reducing motor heat during high-ambient operation.

• Universal Compatibility: Rated for both 440Vac and 370Vac, making it a versatile 80 uF run capacitor for multiple condenser and blower motor profiles.
• Heavy-Duty Construction: Built with an oil-filled aluminum case and non-PCB fluids to withstand temperatures from -40°C to +70°C.
• Enhanced Safety: Integrated internal pressure interrupter safely disconnects the capacitor at the end of its functional life to prevent catastrophic failure.
• Standardized Fit: Compact round capacitor geometry ensures compatibility with existing MARS, JARD, and Titan Pro mounting hardware.

Can I use a 440V capacitor to replace a 370V capacitor?
Yes. You can always "up-rate" the voltage. A 440V capacitor is more robust and will handle the 370V load effectively, whereas using a lower-rated voltage than required will lead to immediate failure.

How do I know if my 80 MFD capacitor has failed?
Look for physical signs like a bulging top, oil leaks, or "mushrooming" of the aluminum casing. Electrically, if the motor is humming but not turning or if a multimeter shows a reading below 72 μF (outside the +/- 6% tolerance), the unit requires replacement.

Is the MARS 12259 compatible with both 50Hz and 60Hz systems?
Yes, this professional-grade capacitor is designed to operate on either frequency, making it suitable for a wide range of international and domestic equipment.

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.