Run Start Capacitor, Round, 85/5 MFD, 440/370

Mars 12938 Dual Motor Run Capacitor – 85/5 MFD, 440V, Round The Mars 12938 is a dual-section run capacitor designed to provide continuous-duty support for both compressor and condenser fan motors in HVAC systems. Rated at 85/5 microfarads with a voltage rating of 440V AC, this round capacitor is suitable for use in high-load applications that require reliable dual-motor operation. Engineered with metallized polypropylene film and housed in an aluminum case, the unit includes a pressure-sensitive interrupter for built-in safety protection. Standard ¼" quick-connect terminals allow for efficient field replacement in systems where combined motor support is needed. Technical Specifications: Model: Mars 12938 (JARD Series) Capacitance: 85/5 MFD (μF) Voltage Rating: 440V AC Shape: Round Terminals: ¼" male quick-connect Frequency: 50/60 Hz Construction: Metallized polypropylene film Housing: Aluminum can Safety Feature: Internal pressure-sensitive interrupter Operating Temp Range: -40°C to +70°C Certifications: UL Recognized Application Overview: Designed for permanent split capacitor (PSC) motors. Supports both compressor and fan motor circuits from a single capacitor body. Suitable for use in residential and light commercial air conditioning and refrigeration units. Common in split system condensers and package units where dual capacitance is specified. Installation Notes: Disconnect power and verify capacitor is fully discharged before handling. Confirm proper capacitance and voltage match prior to installation. Terminal positions are marked (C, FAN, HERM) to assist in correct wiring. Follow equipment manufacturer’s guidelines and comply with local electrical codes. Capacitor should be mounted securely and insulated as necessary against vibration or moisture intrusion. The Mars 12938 is built for demanding HVAC service environments and provides consistent electrical support for dual motor systems. Its high-capacity design and rugged construction make it an appropriate choice for field replacements or new installations requiring 85/5 MFD, 440V round dual capacitors.