MARS 12740 Run Capacitor

The MARS 12740 is a heavy-duty 25 MFD 440V round run capacitor engineered for continuous duty in demanding HVACR applications. As a veteran-grade HVAC replacement part, this oil-filled capacitor provides the necessary phase shift to keep PSC motors, compressors, and condenser fans running at peak efficiency. Designed with high-performance metallized polypropylene dielectric and housed in a rugged round aluminum can, the 12740 is built to withstand high ambient temperatures ranging from -40°C to +70°C. This MARS 12740 25 uF 440VAC component features a patented internal pressure interrupter (PSI) and 1/4-inch male quick-connect terminals for secure wiring. By maintaining precise capacitance tolerance, it reduces motor heat and prevents the winding stress often caused by sub-par generic alternatives. This industrial-grade Jard capacitor serves as a reliable direct replacement capacitor for OEM units and discontinued GE or Genteq models in air conditioning and refrigeration systems.

• Enhanced Motor Efficiency: Delivers a consistent 25 microfarad charge to optimize power factor and reduce amperage draw on condenser fans and blower motors.
• Safety-First Operation: Equipped with a UL 810 recognized pressure-sensitive interrupter for fail-safe protection against high internal pressures.
• Extreme Durability: The non-PCB oil-filled design and metallized polypropylene construction ensure long service life in harsh outdoor environments.
• Universal Compatibility: Rated for both 370V and 440V applications, meeting or exceeding standards for diverse residential and commercial HVAC units.

• Can I use a 440V capacitor if my old one was 370V? Yes, you can always upgrade to a higher voltage rating (440V) as long as the microfarad (25 MFD) and physical dimensions match.
• Is the MARS 12740 compatible with both 50Hz and 60Hz systems? Yes, this capacitor is rated for dual-frequency 50/60Hz operation, making it suitable for international and domestic equipment.
• What does the ±6% tolerance mean for system performance? It ensures the actual capacitance stays within the operational window required by precision PSC motors to prevent overheating or starting issues.

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.