Mars 12799 – Dual Motor Run Capacitor, 55/10 MFD, 440V, Round
The Mars 12799 is a dual-rated motor run capacitor designed for use in HVAC systems that operate single-phase permanent split capacitor (PSC) motors. It provides 55 microfarads (compressor) and 10 microfarads (fan) at a voltage rating of 440 VAC, supporting continuous-duty performance in air conditioning condensing units and similar applications.
Product Specifications:
Capacitance: 55 µF (HERM), 10 µF (FAN)
Voltage Rating: 440 VAC
Frequency: 50/60 Hz
Configuration: Dual section
Shape: Round can
Terminals: 3-terminal (C, HERM, FAN)
Dielectric: Metallized polypropylene
Case Material: Aluminum with pressure-sensitive interrupter
Operating Temperature Range: -40°C to +70°C
Certifications: UL 810 recognized, RoHS compliant
Applications:
Designed to operate in HVAC systems requiring a dual run capacitor, the Mars 12799 is suitable for systems that utilize separate fan and compressor motors. It is commonly used as a direct replacement component in central air conditioners and heat pump condensing units.
Installation Notes:
Before replacement, always verify that the capacitance and voltage match the original unit. De-energize the circuit and fully discharge the existing capacitor prior to installation. Follow OEM procedures and comply with local electrical codes. Installation by qualified personnel is recommended for safety and performance integrity.