Run Start Capacitor, Round, 20/7.5 MFD, 440/370

HVAC-Grade Component – Mars 12654 Dual Run Capacitor for Single-Phase Motor Circuits

The Mars 12654 Dual Motor Run Capacitor delivers dependable performance for HVAC systems requiring simultaneous support for two motors. With a 20/7.5 µF capacitance and 440V AC rating, this capacitor is engineered to stabilize compressor and fan motor circuits in high-cycle environments. Its durable, sealed construction and industry-standard round form factor make it ideal for use in both residential and light commercial equipment.

This capacitor is built for use in systems utilizing permanent split capacitor (PSC) motors, where maintaining motor torque and efficiency is critical to equipment longevity. The Mars 12654 integrates two capacitors into one housing, simplifying replacement logistics and saving space within system compartments.

Professional-Grade Features

• ✅ Dual Motor Support – Delivers capacitance to two independent motor windings from a single cylindrical unit, reducing system footprint.
• ✅ 440V AC Operation – Supports elevated voltage conditions and provides a margin of safety against power fluctuations and surges.
• ✅ Accurate Capacitance – 20/7.5 microfarads ±6% ensures correct phase shift for consistent compressor and fan motor operation.
• ✅ Aluminum Round Can – Sealed case resists corrosion and vibration-related fatigue in rooftop and outdoor systems.

Technical Specifications

• Capacitance: 20/7.5 µF (microfarads)
• Voltage Rating: 440 VAC
• Form Factor: Round
• Dielectric: Metallized polypropylene film
• Manufacturer: Mars

Installation Standards

The Mars 12654 is equipped with industry-standard ¼" quick-connect terminals and is suitable for field replacement in most single-phase condenser units. Installation should be completed by certified HVAC technicians to ensure proper capacitance matching and system balance. Always confirm ratings against the motor data plates to prevent mismatch and premature component failure.

Field Applications

For HVAC Contractors: This capacitor offers dual-function motor support in one compact device, streamlining field inventory and reducing installation time. It is commonly specified in condenser units, air handlers, and other equipment utilizing PSC motors where both compressor and fan motor capacitance must be maintained with precision.

Key Advantages

• ✅ Thermally Stable – Maintains consistent capacitance values under heat and voltage cycling.
• ✅ Space Efficient – Compact round housing fits within standard brackets in existing system enclosures.
• ✅ Performance Rated – Designed to meet or exceed industry durability benchmarks for HVAC motor run components.
• ✅ Installation Efficiency – Clearly marked terminals and round profile support fast installation and changeouts.

Specification-Ready Component for Dual Motor Systems

The Mars 12654 Dual Motor Run Capacitor is the preferred choice for HVAC professionals seeking a reliable, high-voltage-rated component to support compressor and fan motor circuits. Its performance stability, material quality, and ease of installation make it an essential part of any technician's maintenance and retrofit toolkit.