Dual Run Capacitor, Round, 40/7.5/440 uF

Engineered for Demanding Applications – Jard by Mars Dual Run Capacitor for Professional HVAC Systems

The Jard by Mars 12787 Dual Run Capacitor is engineered to meet the rigorous requirements of HVAC professionals. Designed for systems utilizing both a compressor and fan motor, this capacitor combines robust electrical specifications with durable construction to support continuous-duty applications in both commercial and residential environments.

This unit features a dual-section configuration (40/7.5 µF), allowing for simplified installation and reliable performance in split-phase motor systems. Its compact cylindrical form ensures it fits efficiently within a broad range of equipment enclosures, reducing space conflicts during system retrofits or repairs.

Product Reliability Backed by Industrial Design

The 12787 model is built with metallized polypropylene film, enclosed in an aluminum case with an insulating top for secure terminal connections. Each unit is tested to stringent standards to ensure consistent performance and operational safety under fluctuating voltage conditions and temperature extremes.

• ✅ High-Endurance Build – Manufactured to perform under continuous thermal and electrical stress, suitable for OEM replacement or field service.
• ✅ Stable Output – Provides steady reactive power to both compressor and fan motor circuits, improving overall system efficiency.
• ✅ Reduced Downtime – Minimizes component failure risks that can lead to HVAC service interruptions.

Technical Details

• Capacitance: 40/7.5 µF ±6%
• Voltage Rating: 370/440 VAC dual-rated
• Operating Frequency: 50/60 Hz
• Temperature Range: -40°C to +70°C
• Physical Size: 4-3/8" H × 2" D

Application & Installation Guidance

This dual run capacitor is intended for use in single-phase induction motors found in HVAC condensers and air handlers. For optimal performance and safety, installation should be completed by licensed HVAC personnel in accordance with local codes and manufacturer specifications. Proper discharge procedures and terminal configuration awareness are critical to ensure successful integration into existing circuitry.

Contractor-Focused Advantages

Efficient Integration: The dual-function design streamlines replacement workflows by consolidating two capacitive functions into one component, reducing part inventory and on-site service time.

System Compatibility: Rated for use across a variety of HVAC platforms requiring dual capacitance, including standard residential and light commercial systems. Dual voltage support enables deployment across legacy and modern units alike.

Performance Features

• ✅ Dual Terminal Sections – Combines fan and compressor circuits to simplify wiring schemes.
• ✅ Universal Voltage Range – Dual-rated for 370V and 440V systems for enhanced field compatibility.
• ✅ Environmental Resistance – Engineered for sustained use in demanding indoor or outdoor conditions.
• ✅ Space-Saving Footprint – Streamlined cylindrical form for seamless enclosure integration.
• ✅ Commercial-Grade Build – Built to withstand repeated duty cycles in high-use HVAC installations.