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The RECTORSEAL M12041 is an oval run capacitor rated at 30 microfarads (MFD) and 440 volts, designed to support continuous motor operation in HVAC systems. Run capacitors maintain the phase shift needed to keep single-phase motors running efficiently after startup. This capacitor is sized for use with compressors, condenser fan motors, and blower motors found in residential and light commercial cooling and heating equipment. Licensed HVAC technicians typically handle replacement during routine service calls or when diagnosing motor performance issues such as reduced airflow, hard starts, or intermittent shutdowns.
This capacitor is suited for residential and light commercial HVAC applications where an oval form factor is required. The 30 MFD rating and 440-volt rating make it compatible with a range of single-phase motors in split-system air conditioners, heat pumps, and package units. Its compact oval profile allows installation in tight equipment cabinets where round capacitors may not fit as cleanly. Technicians often stock this rating as a common replacement value across multiple equipment brands and model lines.
Designed as an OEM-style replacement run capacitor for single-phase compressor and fan motors in residential and light commercial HVAC systems requiring a 30 MFD, 440-volt oval capacitor.
Run capacitor replacement is performed by licensed HVAC technicians. Disconnect and lock out all power to the unit before handling capacitors, as they can retain a dangerous charge even after power is removed — discharge the capacitor safely using an insulated resistor tool before touching terminals. Verify that the replacement MFD rating and voltage rating match the motor nameplate or OEM specification before installation. Follow all applicable local electrical codes and NEC guidelines when servicing capacitor circuits.
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