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The MARS 12047 is a dual-rated motor run capacitor designed for use in residential and commercial HVAC systems. It carries a dual capacitance rating of 75+10 microfarads and is rated for operation at 370/440 VAC. This makes it compatible with a wide range of air conditioning condensers, heat pumps, and air handler units found in the field. The round cylindrical housing measures 2-1/2 inches in diameter and 9-1/2 inches in height, fitting standard capacitor mounting brackets and disconnect boxes used by HVAC technicians every day. Motor run capacitors like the MARS 12047 are essential components in single-phase AC motors. They maintain a continuous phase shift in the start winding during normal motor operation. This improves motor efficiency, reduces heat buildup, and extends the life of the compressor and fan motor. Without a properly functioning run capacitor, motors draw excess current, run hot, and eventually fail. The MARS 12047 dual run capacitor serves both the compressor and the condenser fan motor from a single unit, which simplifies installation and reduces the number of components needed in the electrical panel. MARS capacitors are part of the Blue Box product line, which is a trusted name among HVAC service technicians and contractors across North America. The 370/440 VAC dual voltage rating gives technicians added flexibility when stocking replacement parts, since a single capacitor can serve units rated at either voltage level. Rated for both 50 Hz and 60 Hz frequency systems, this capacitor is suitable for use in domestic and international HVAC equipment. Whether you are performing a preventive maintenance check, responding to a no-cool service call, or completing a full system replacement, the MARS 12047 is a reliable and direct replacement capacitor for a wide range of OEM units. HVAC pros trust MARS capacitors for their consistent quality, long service life, and easy field installation.
The MARS 12047 dual run capacitor delivers dependable motor support for compressors and fan motors in a single round unit rated at 75+10 uF and 370/440 VAC. Its dual voltage and dual frequency compatibility make it a go-to replacement capacitor for HVAC technicians working across a broad range of equipment.
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