MARS 12907 Run Capacitor

The MARS 12907 is a trade-grade 7.5 MFD 370V oval run capacitor engineered for continuous duty in single-phase motor circuits. Designed for high-reliability applications in HVACR equipment, this 7.5 uF 370 VAC capacitor utilizes a non-PCB, biodegradable oil-filled construction within a rugged metal housing to ensure superior heat dissipation and internal pressure protection. As a universal HVAC replacement capacitor, it meets strict EIA-456-A standards, ensuring performance longevity and stable capacitance under varying thermal loads. For technicians performing routine maintenance or emergency repairs, the MARS 12907 serves as a direct drop-in for OEM 7.5 microfarad motor capacitors, featuring standard 1/4-inch quick-connect terminals for rapid installation. Its physical form factor is optimized for confined electrical cabinets, providing a secure fit where oval geometry is required to clear surrounding components or mounting brackets.

• Dual-Voltage Compatibility: Rated at 370VAC, making it suitable for both 240V and 370V systems requiring 7.5 MFD.
• Internal Safety Features: Includes a physical interrupter to safely disconnect the capacitor at the end of its service life or during a fault.
• Environmental Compliance: Fully compliant with non-PCB regulations, utilizing environmentally-safe dielectric fluid.
• Extreme Temperature Rating: Built to operate reliably in high-ambient condensing units with an operating range of -40°C to 70°C.
• Field Durability: The heavy-duty steel casing resists corrosion and protects against mechanical stress in demanding outdoor environments.

Can I use a 370V capacitor if the old one was 440V?
No. You should never down-rate voltage. However, a 440V capacitor can replace a 370V unit if the MFD rating matches. Since this is 370V, ensure the original part was not 440V.

What is the tolerance range for this MARS capacitor?
The MARS 12907 typically features a +/- 10% capacitance tolerance, which is standard for maintaining efficient motor torque and current draw in residential blowers and fans.

Will this fit in a standard capacitor strap?
Yes, this is a standard oval-run capacitor size. If your previous mounting bracket was for a round capacitor, you will need to utilize an oval mounting strap.

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.