Dual Run Capacitor, Round, 80/5/440 uF

Jard 80/5 µF Dual Run Capacitor – 370/440V, Round Aluminum Case

The Mars 12801 Jard Dual Run Capacitor is designed to deliver consistent performance in HVAC systems that require both compressor and fan motor support from a single unit. Rated at 80/5 microfarads and 370/440 VAC, this dual-section run capacitor is suitable for demanding applications that involve high motor starting torque and continuous-duty operation in single-phase systems.

Engineered with metallized polypropylene dielectric and enclosed in a sealed round aluminum case, this capacitor provides long-lasting service in rooftop units, split-system condensers, and other high-cycle HVAC installations. Its standard terminal configuration allows for straightforward replacement in field service environments.

Product Highlights

• ✅ Dual Capacitance Configuration – 80 µF (compressor) and 5 µF (fan motor) ratings in a single component.
• ✅ Voltage Tolerance: Dual-rated at 370/440 VAC for compatibility across a wide range of motor systems.
• ✅ Temperature Rating: Operates within -40°C to +70°C, supporting seasonal HVAC demands in various climates.
• ✅ Construction: Hermetically sealed aluminum case with corrosion-resistant finish and oil-free dielectric.
• ✅ Compact Footprint: Measures approximately 4-3/8" high × 2-1/2" diameter, compatible with standard mounting brackets.

Technical Specifications

• Model: Mars 12801
• Capacitance: 80/5 µF ±6%
• Voltage Rating: 370/440 VAC
• Frequency: 50/60 Hz
• Operating Temp: -40°C to +70°C
• Enclosure: Round aluminum, non-PCB
• Dimensions: Height: 4-3/8", Diameter: 2-1/2"
• Terminal Type: ¼-inch quick-connect spade terminals

Installation Requirements

This capacitor is intended for installation by qualified HVAC personnel. Verify voltage and microfarad ratings prior to replacement. Ensure power is isolated and the existing capacitor is properly discharged before installation. Terminal leads should be securely connected and checked with a multimeter to verify continuity and correct polarity.

Field Application & Reliability

Ideal for systems requiring high-capacitance compressor support and secondary fan motor capacitance, the 12801 capacitor is commonly used in residential and light commercial systems. It reduces the need for two separate components and supports wiring simplification in tight electrical compartments.

Key Advantages

• ✅ OEM-Compatible Design – Matches industry-standard form factors and performance specifications.
• ✅ High Voltage Endurance – Maintains dielectric stability under high-cycle and peak-load conditions.
• ✅ Service Efficiency – Dual-run format streamlines installation and inventory management for contractors.
• ✅ Thermal Stability – Performs reliably across wide seasonal temperature swings.