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The MARS tp-cap-45/5/440usar is a round dual run capacitor rated at 45/5 MFD and 440 volts, manufactured in the USA. Dual run capacitors serve both the compressor and the fan motor in a single unit, reducing the number of components in the electrical panel. This capacitor is installed by licensed HVAC technicians during routine maintenance, compressor hard-start troubleshooting, or capacitor failure replacement in split-system air conditioners and heat pumps. The round form factor fits standard capacitor brackets used in most residential condensing units.
This capacitor is suited for residential and light commercial HVAC condensing units where a single round capacitor supports both the compressor and the outdoor fan motor. The 45 MFD section serves the compressor while the 5 MFD section serves the condenser fan motor. The 440-volt rating provides compatibility across common single-phase 208/230-volt systems and offers increased headroom compared to 370-volt units, making it a common upgrade choice for replacing worn capacitors.
Designed as an OEM-style replacement dual run capacitor for residential and light commercial split-system air conditioners and heat pumps requiring a 45/5 MFD, 440-volt round capacitor.
Dual run capacitors must be installed by a qualified HVAC technician. Always disconnect and lock out power to the condensing unit before servicing and discharge the capacitor fully before handling, as capacitors retain a lethal charge after power is removed. Match the MFD and voltage ratings exactly or use a higher-voltage-rated replacement of the same MFD value. Refer to the equipment wiring diagram for correct terminal identification.
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