Single Run Capacitor, Oval, 30/440 uF

Mars 12941 – Jard 30 MFD 440V Oval Motor Run Capacitor The Mars 12941 from the Jard product line is a 30 microfarad (µF), 440-volt AC oval run capacitor designed for continuous-duty applications in HVAC equipment utilizing permanent split capacitor (PSC) motors. This unit supports consistent operation of blower motors, condenser fans, and compressors across a range of systems. Constructed with metallized polypropylene film and enclosed in a non-PCB aluminum case, the capacitor features an integrated pressure-sensitive interrupter for fault protection. The oval design allows compatibility with tight-mount configurations commonly found in residential and light commercial units. Product Specifications Manufacturer: Mars Brand: Jard Part Number: 12941 Capacitance: 30 µF Voltage Rating: 440 VAC Frequency: 50/60 Hz Shape: Oval Case Material: Aluminum Dielectric: Metallized polypropylene Safety Feature: Pressure-sensitive interrupter Terminals: Standard ¼" male quick-connect tabs Temperature Range: -40°C to +70°C Approx. Case Dimensions: 3.5" H x 2.806" W Applications This capacitor is suitable for use in systems where a 30 µF, 440V run capacitor is required, including: Condenser fan motors Evaporator and air handler blower motors Refrigeration compressors Other single-phase PSC motor-driven equipment It is commonly installed in residential HVAC units and compatible with a wide range of OEM specifications. Installation Guidelines Installation should be performed by a licensed HVAC technician. Key considerations: Disconnect power and verify full discharge of existing capacitors Match capacitance and voltage to the original component Observe terminal polarity and wiring configuration Secure using manufacturer-approved brackets or holders Follow all relevant codes and unit specifications Incorrect installation can result in reduced performance or system damage. Performance Characteristics Designed for continuous-duty motor support Compact oval profile fits tight compartments Physical interrupter activates under failure conditions to isolate the capacitor Compliant with RoHS and environmental safety standards Non-PCB construction for reduced environmental impact