Dual Run Capacitor, Round, 45/7.5/440 uF

Mars 12789 – Jard by Mars Dual Motor Run Capacitor, 45/7.5 MFD, 370/440V The Mars 12789 capacitor from the Jard line is a dual-section run capacitor designed for use in HVAC systems requiring support for both a compressor and a fan motor. With a capacitance rating of 45/7.5 microfarads (MFD) and a voltage rating of 370/440 VAC, this component is well-suited for air conditioning and heat pump units that utilize permanent split capacitor (PSC) motors. Manufactured with metallized polypropylene film and encased in an oil-filled aluminum canister, this unit ensures long service life and high reliability under continuous-duty operation. The capacitor includes a built-in pressure-sensitive interrupter for safety and conforms to industry-standard electrical ratings. Technical Specifications Capacitance: 45/7.5 MFD (±5%) Voltage Rating: 370/440 VAC Frequency: 50/60 Hz Case Style: Round aluminum Construction: Hermetically sealed, oil-filled, non-PCB Temperature Range: -40°C to +70°C Height: 3-7/8" Diameter: 2" Terminals: ¼" male quick connect Interrupter: Internal pressure-activated safety device Compliance: UL recognized, RoHS compliant Applications Suitable for PSC motors in HVAC condensing units Supports compressor and fan motor operation with a single device Used in residential and light commercial systems requiring 45/7.5 MFD at 370 or 440 VAC Fits standard mounting brackets and supports fast field replacement Installation Guidelines Installation should be performed by a qualified HVAC technician to ensure proper handling and connection of terminals. Always verify the microfarad and voltage requirements of the system prior to installation. Power must be disconnected and the capacitor fully discharged before servicing Ensure correct polarity and secure all terminals to prevent arcing or loose connections Match physical dimensions and mounting configuration to avoid fitment issues Highlights Dual-run design supports both compressor and condenser fan circuits Designed to operate under continuous load with minimal degradation Aluminum case improves heat dissipation and resists corrosion Pressure-sensitive interrupter adds built-in safety protection Wide operating range tolerates temperature extremes typical in HVAC enclosures