Mars 12929 Oval Run Capacitor 440V 5X

Product Description

The MOTORS ARMATURES (MARS) 12929 is an oval motor run capacitor rated at 440 volts with a 5X capacitance code. Motor run capacitors maintain the phase shift in single-phase induction motors, keeping the auxiliary winding energized during normal operation. This results in smoother motor rotation, improved efficiency, and reduced electrical noise. The oval form factor allows it to fit into tight equipment cabinets and bracket mounts commonly found in residential and light commercial HVAC equipment. Installation is typically performed by a licensed HVAC technician during motor replacement or capacitor failure diagnosis.

The 12929 is suited for use in HVAC systems where a 440-volt oval run capacitor is required. Typical applications include condenser fan motors, compressor start and run circuits, and air handler blower motors. The 440-volt rating provides compatibility across a wide range of single-phase motor applications in both residential and commercial settings. Because motor run capacitors degrade over time, this part is a common service replacement item during seasonal tune-ups and compressor or fan motor changeouts.

Key Features

• Oval form factor fits standard bracket and strap mounts in HVAC cabinets
• 440-volt rating supports a broad range of single-phase motor circuits
• 5X capacitance code for proper motor phase shift and run performance
• Sold as a single unit for direct one-for-one replacement service

Compatibility

Designed as an OEM-style replacement oval run capacitor for single-phase HVAC motors and equipment requiring a 440-volt rated run capacitor.

Installation Notes

Motor run capacitors are installed by licensed HVAC technicians. Always disconnect and lock out power to the unit before servicing the capacitor. Capacitors can retain a dangerous electrical charge even after power is removed - discharge the capacitor using an approved discharge tool before handling. Verify that the replacement capacitor matches the voltage rating and capacitance code of the original before installation.