Run Start Capacitor, Round, 30/7.5 MFD, 440/370

Mars 12782 – 30/7.5 MFD, 440V Dual Section Round Motor Run Capacitor The Mars 12782 is a dual-value motor run capacitor designed to support two motor windings—commonly a compressor and fan—in permanent split capacitor (PSC) HVAC systems. With a capacitance rating of 30/7.5 microfarads (MFD) and a voltage rating of 440 VAC, this unit is engineered for continuous-duty operation in residential and light commercial applications. The capacitor features metallized polypropylene film dielectric construction, sealed in a round aluminum case. It includes a pressure-sensitive interrupter to prevent internal rupture in the event of dielectric failure. This model is oil-filled, hermetically sealed, and manufactured without polychlorinated biphenyls (PCBs), meeting applicable UL and RoHS compliance standards. Technical Specifications Capacitance: 30/7.5 MFD (±5%) Rated Voltage: 440 VAC Frequency: 50/60 Hz Configuration: Dual section (for compressor and fan) Dielectric Type: Metallized polypropylene film Case Style: Round aluminum Safety Device: Pressure-sensitive internal interrupter Operating Temperature Range: -40°C to +70°C Terminal Type: Dual ¼" male quick-connect Construction: Oil-filled, non-PCB, hermetically sealed Certifications: UL recognized, RoHS compliant Applications Designed for PSC motor circuits in HVAC systems Supports two independent motor windings in a single enclosure Common in condenser units and air handler assemblies Suitable for OEM replacement and aftermarket maintenance where 30/7.5 MFD, 440V is specified Installation Notes Match both capacitance values and voltage rating to original equipment Discharge capacitor prior to removal or handling Use industry-standard brackets and secure terminal connections Installation should be performed by trained HVAC professionals following electrical safety protocols