Dual Run Capacitor, Round, 50/5/440 uF

Mars 12790 – Jard Dual Run Capacitor, 50/5 MFD, 370/440V, Round Aluminum Case The Mars 12790 capacitor from the Jard line is a dual-section motor run capacitor engineered for HVAC systems requiring support for both compressor and condenser fan motor operation. With a capacitance rating of 50/5 microfarads and a voltage rating of 370/440 VAC, this component is suited for use in systems operating across variable voltage conditions. Constructed with metallized polypropylene film and enclosed in an oil-filled round aluminum housing, the capacitor provides stable electrical performance and improved thermal dissipation. Its internal pressure interrupter offers built-in safety protection, and the compact form factor ensures compatibility with most residential and light commercial equipment. Product Specifications Capacitance: 50/5 MFD (±5% tolerance) Voltage Rating: 370/440 VAC Frequency: 50/60 Hz Operating Temperature: -40°C to +70°C Case Type: Round, oil-filled aluminum Height: 4-3/8 inches (overall) Diameter: 2 inches Interrupter: Pressure-sensitive safety device Terminals: ¼" male quick-connect Compliance: UL recognized, RoHS compliant Applications Designed for permanent split capacitor (PSC) motors in HVAC condenser units Suitable for dual-function support of fan motor and compressor in split system air conditioners and heat pumps Rated for continuous-duty cycles in standard residential and light commercial installations Installation Notes Installation must be performed in accordance with electrical code and manufacturer specifications. Only qualified HVAC technicians should replace or install capacitors, as incorrect handling may result in damage or unsafe operation. Verify capacitor ratings match system requirements before installation Disconnect power and discharge the existing capacitor before removal Ensure all terminals are correctly aligned and securely fastened Key Features Dual-run configuration for simultaneous fan and compressor support High dielectric strength film ensures stable performance under load Aluminum case improves heat transfer and resists corrosion Compact footprint enables use in restricted mounting spaces Designed for extended service life in demanding field conditions