Mars 12783 – Jard by Mars 35/5 MFD, 440V Dual Section Round Motor Run Capacitor
The Mars 12783 is a dual-value motor run capacitor engineered for permanent split capacitor (PSC) motors in HVAC systems. With capacitance ratings of 35 and 5 microfarads (MFD) and a voltage rating of 440 VAC, this unit supports simultaneous operation of two motor windings—typically a compressor and fan motor—using a single component.
This capacitor features a metallized polypropylene film dielectric, is hermetically sealed in a round aluminum case, and includes a pressure-sensitive interrupter for overpressure protection. The capacitor is non-PCB and compliant with UL and RoHS requirements, ensuring long-term reliability in both residential and light commercial applications.
Technical Specifications
Capacitance: 35/5 MFD (±5%)
Rated Voltage: 440 VAC
Operating Frequency: 50/60 Hz
Case Material: Round aluminum can
Dielectric: Metallized polypropylene film
Construction: Hermetically sealed, oil-filled, non-PCB
Safety Feature: Internal pressure-sensitive interrupter
Temperature Range: -40°C to +70°C
Terminals: Dual ¼" male quick-connect
Certifications: UL recognized, RoHS compliant
Application Use
Designed for dual-motor PSC circuits in HVAC condenser units
Replaces OEM components rated 35/5 MFD at 440V
Compatible with systems requiring a combined capacitor for fan and compressor loads
Fits standard mounting configurations for service and retrofit applications
Installation Guidance
Confirm both capacitance values and voltage rating before installation
Discharge the capacitor fully before removal or handling
Install using proper bracket support and terminal orientation
For safety and performance assurance, installation should be completed by qualified HVAC technicians