Dual Run Capacitor, Round, 55/7.5/440 uF

High-Duty HVAC Component – Jard 55/7.5 µF Dual Run Capacitor, 370/440V

The Mars 12793 Dual Run Capacitor provides capacitive support for both compressor and fan motor circuits in single-phase HVAC systems. With a capacitance of 55/7.5 microfarads and a voltage rating of 370/440 VAC, this unit is engineered for continuous-duty performance in residential and light commercial air conditioning units.

This round aluminum-can capacitor is designed for systems requiring dual capacitance in a compact footprint. It meets common OEM specifications for condenser and air handler applications where consistent voltage stability and high startup torque are required.

Component Advantages for System Integrity

• ✅ Dual-Circuit Support – Supplies stable reactive power to both the compressor and fan motor.
• ✅ 370/440 VAC Rated – Accommodates standard and high-voltage system configurations.
• ✅ Temperature Range: Operates reliably from -40°C to +70°C in rooftop, attic, or outdoor installations.
• ✅ Aluminum Can Construction – Sealed and non-PCB for corrosion resistance and electrical safety.
• ✅ Industry-Standard Design – 5-1/4" height × 2" diameter allows direct-fit replacement in most bracketed mounts.

Technical Specifications

• Model Number: Mars 12793
• Capacitance: 55/7.5 µF ±6%
• Voltage Rating: 370/440 VAC
• Frequency: 50/60 Hz
• Operating Temp Range: -40°C to +70°C
• Enclosure Type: Round aluminum case
• Dimensions: 5-1/4" height × 2" diameter
• Terminals: Standard ¼-inch spade connectors

Installation Guidance

Installation should be performed by qualified HVAC professionals to ensure system compatibility and electrical safety. Prior to replacement, confirm capacitance and voltage requirements. Proper discharge procedures must be followed. The capacitor should be securely mounted and all terminals firmly connected using insulated quick-connect terminals rated for HVAC applications.

Use Case and Field Performance

The Jard 12793 is routinely specified for dual-motor HVAC systems requiring a single capacitor solution. It reduces component count in the control panel and simplifies wiring during system service or retrofit. Its high thermal endurance and electrical stability make it a reliable part for high-cycle compressor and blower motor applications.

Key Functional Features

• ✅ Consolidated Capacitance – Powers both run windings for compressor and fan circuits.
• ✅ Voltage Versatility – Dual-rated for systems operating at either 370V or 440V.
• ✅ Dielectric Integrity – Film construction maintains capacitance accuracy over extended service life.
• ✅ HVAC Standard Dimensions – Compatible with most cylindrical capacitor brackets and enclosures.