Description
Mars 12910 Oval Run Capacitor Overview
The Mars 12910 is a 15 Microfarad (MFD), 370VAC oval run capacitor designed to maintain consistent motor performance in air conditioning, heat pump, and refrigeration systems. Run capacitors provide a continuous phase shift to improve motor efficiency, reduce energy consumption, and extend motor life — making this a critical component in any residential or light commercial HVAC application.
Key Specifications
- Capacitance: 15 Microfarad (MFD/µF)
- Voltage Rating: 370VAC
- Shape: Oval
- Type: Run Capacitor
- Brand: Mars (Motor Application Research Solutions)
- Part Number: 12910
Features & Benefits
- Oval form factor fits standard HVAC capacitor brackets and mounting hardware
- Rated at 370VAC for compatibility with single-phase compressor and fan motor circuits
- Designed for continuous-duty run applications — not a start capacitor
- Helps improve motor efficiency and reduce operating temperatures
- Direct replacement for failed or degraded run capacitors in AC units, heat pumps, and refrigeration equipment
- Manufactured by Mars, a trusted name in HVAC electrical components
Common Applications
- Residential and light commercial air conditioners
- Heat pump condenser and air handler units
- Refrigeration condensing units
- Single-phase compressor and fan motor circuits
Installation Notes
Always discharge the capacitor before handling. Verify that the replacement capacitor matches the original equipment’s MFD rating and voltage requirements. A 370VAC-rated capacitor may be used in place of a 370VAC-specified unit. Consult the OEM documentation or a qualified HVAC technician if unsure of compatibility.
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