Single Run Capacitor, Round, 20/440 uF

Mars 12737 – Jard by Mars 20 MFD, 440V Round Run Capacitor The Mars 12737 is a single-value round motor run capacitor rated at 20 microfarads (MFD) and 440 volts AC. Manufactured under the Jard by Mars product line, this component is engineered for continuous-duty use in HVAC systems, supporting motors in condensers, air handlers, and blower assemblies. It features a metallized polypropylene film dielectric, sealed in a non-corrosive aluminum case. The capacitor is equipped with a pressure-sensitive interrupter for overpressure protection and is free of polychlorinated biphenyls (PCBs). Designed to perform reliably in high-temperature environments, it meets industry standards for endurance, tolerance, and thermal stability. Technical Specifications Capacitance: 20 µF (±5%) Voltage Rating: 440 VAC Frequency: 50/60 Hz Operating Temp Range: -40°C to +70°C Dielectric: Metallized polypropylene film Case Material: Round aluminum can Case Height: Approximately 2-5/8 inches Overall Dimensions: ~3-1/8 inches high × 3/4 inch diameter Terminals: Dual terminal configuration (¼" male quick-connect) Safety Features: Pressure-sensitive interrupter; non-PCB Compliance: UL recognized, RoHS compliant Contractor Notes Suitable for permanent split capacitor (PSC) motors requiring 20 MFD at 440V Designed for use in residential and light commercial HVAC equipment Offers consistent electrical characteristics across operating temperatures Ideal for replacement stock due to standard form factor and rating profile Interrupter provides additional protection in case of internal dielectric failure Installation Considerations Installation should be performed by qualified HVAC technicians familiar with capacitor discharge protocols and system voltage requirements. Always confirm matching microfarad and voltage ratings with the system manufacturer or existing component before replacement.