Dual Run Capacitor, Round, 40/5/440 uF

Mars 12786 – Jard by Mars 40/5 MFD, 440V Dual Section Round Motor Run Capacitor The Mars 12786 is a dual-section motor run capacitor rated at 40 and 5 microfarads (MFD) with a voltage rating of 440 VAC. This capacitor is designed for continuous-duty operation in HVAC systems that use permanent split capacitor (PSC) motors, supporting both compressor and fan motor circuits with a single component. Constructed with metallized polypropylene film and enclosed in a round aluminum case, the unit is oil-filled, hermetically sealed, and equipped with a pressure-sensitive interrupter. Its non-PCB design meets UL and RoHS compliance standards, making it suitable for use in residential and light commercial systems. Technical Specifications Capacitance: 40/5 MFD (±5%) Voltage Rating: 440 VAC Frequency: 50/60 Hz Dielectric: Metallized polypropylene film Enclosure: Round aluminum can Construction: Oil-filled, hermetically sealed, non-PCB Safety Feature: Pressure-sensitive internal interrupter Operating Temp Range: -40°C to +70°C Terminals: Dual ¼" male quick-connects Case Height: Approx. 3-7/8 in. Diameter: Approx. 2 in. Certifications: UL recognized, RoHS compliant Application Notes For dual motor circuits in PSC air conditioning and heat pump systems Designed to simultaneously operate both fan and compressor motors Compatible with standard HVAC mounting configurations Matches equipment requiring 40/5 MFD, 440V rating for service replacement Installation Guidelines Disconnect all power and discharge the capacitor before installation Confirm that capacitance and voltage match system requirements Install securely using appropriate brackets or clamps Ensure proper lead connection and terminal fitment Installation should be performed by trained personnel to meet electrical safety standards Mars 12786 – Jard by Mars 40/5 MFD, 440V Dual Section Round Motor Run Capacitor The Mars 12786 is a dual-section motor run capacitor rated at 40 and 5 microfarads (MFD) with a voltage rating of 440 VAC. This capacitor is designed for continuous-duty operation in HVAC systems that use permanent split capacitor (PSC) motors, supporting both compressor and fan motor circuits with a single component. Constructed with metallized polypropylene film and enclosed in a round aluminum case, the unit is oil-filled, hermetically sealed, and equipped with a pressure-sensitive interrupter. Its non-PCB design meets UL and RoHS compliance standards, making it suitable for use in residential and light commercial systems. Technical Specifications Capacitance: 40/5 MFD (±5%) Voltage Rating: 440 VAC Frequency: 50/60 Hz Dielectric: Metallized polypropylene film Enclosure: Round aluminum can Construction: Oil-filled, hermetically sealed, non-PCB Safety Feature: Pressure-sensitive internal interrupter Operating Temp Range: -40°C to +70°C Terminals: Dual ¼" male quick-connects Case Height: Approx. 3-7/8 in. Diameter: Approx. 2 in. Certifications: UL recognized, RoHS compliant Application Notes For dual motor circuits in PSC air conditioning and heat pump systems Designed to simultaneously operate both fan and compressor motors Compatible with standard HVAC mounting configurations Matches equipment requiring 40/5 MFD, 440V rating for service replacement Installation Guidelines Disconnect all power and discharge the capacitor before installation Confirm that capacitance and voltage match system requirements Install securely using appropriate brackets or clamps Ensure proper lead connection and terminal fitment Installation should be performed by trained personnel to meet electrical safety standards