Run Start Capacitor, Round, 85/10 MFD, 440/370

Mars 12944 Dual Motor Run Capacitor – 85/10 MFD, 440V, Round The Mars 12944 is a dual-section motor run capacitor designed for continuous-duty operation in HVAC systems requiring support for both compressor and fan motors. With a capacitance rating of 85/10 microfarads and a voltage rating of 440V AC, this round capacitor is commonly used in permanent split capacitor (PSC) motor applications. Manufactured with metallized polypropylene film and housed in a corrosion-resistant aluminum canister, the unit includes a pressure-sensitive internal interrupter for electrical safety. The standard ¼" male quick-connect terminals simplify replacement in field installations. Technical Specifications: Model: Mars 12944 Capacitance: 85/10 MFD (μF) Voltage Rating: 440V AC Configuration: Dual run Shape: Round Frequency: 50/60 Hz Terminals: ¼" male quick-connect Construction: Metallized polypropylene film Enclosure: Aluminum case Safety Feature: Internal pressure interrupter Operating Temperature Range: -40°C to +70°C Certification: UL Recognized Application Overview: Designed for use in HVAC equipment with PSC motors. Supports dual motor operation, typically for condenser fan and compressor circuits. Suitable for use in air conditioners, heat pumps, and refrigeration units requiring a combined 85/10 MFD rating at 440V. Compatible with equipment calling for a round, dual-value capacitor in a continuous-duty environment. Installation Considerations: Power must be disconnected and the existing capacitor discharged before handling. Confirm that the replacement matches the original component’s capacitance and voltage ratings. Terminals are marked (C, FAN, HERM) for correct wiring. Installation should comply with local electrical codes and manufacturer specifications. Secure mounting and protection from vibration and moisture are essential for longevity. The Mars 12944 provides consistent and dependable performance for dual motor systems in HVAC applications. Its high voltage rating and dual capacitance configuration make it suitable for field replacements and new installations where efficiency and reliability are required.