Run Start Capacitor, Round, 55/10 MFD, 440/370

ClimaTek 12799 – Dual Rating Run Capacitor for Demanding HVAC Motor Loads

The Mars 12799, marketed under the ClimaTek label, is a dual-rated motor run capacitor engineered for continuous-duty HVAC systems. With a capacitance rating of 55/10 microfarads (MFD) and a voltage rating of 440V AC, it is designed to deliver stable and reliable electrical support for compressor and fan motor circuits in permanent split capacitor (PSC) motor configurations.

This unit provides effective phase shift and torque assistance for two motor windings, packaged within a compact round case suitable for space-constrained installations. It is suitable for field replacement, scheduled maintenance, and OEM-compatible retrofits.

HVAC Contractor Advantages

The 12799 capacitor is field-rated for reliability under varying load conditions, offering:

• ✅ Dual Capacitance Support – 55/10 MFD configuration suitable for dual-motor circuit designs.
• ✅ High Voltage Tolerance – 440V AC rating ensures durability in high ambient and fluctuating voltage environments.
• ✅ Aluminum Construction – Cylindrical metal housing provides strength and heat resistance for prolonged service life.
• ✅ Hermetically Sealed – Prevents ingress of moisture and contaminants, reducing risk of dielectric failure.

Technical Specifications

• Capacitance: 55/10 MFD (Microfarads)
• Voltage Rating: 440V AC
• Configuration: Dual Motor Run Capacitor
• Form Factor: Round
• Application: Compressor and fan motor in HVAC systems

Installation Guidelines

Capacitor replacement must be performed by trained HVAC professionals. Ensure system power is disconnected and verify capacitor ratings match the equipment nameplate or OEM specs. Use a multimeter with capacitance function to test for proper values prior to energizing the circuit.

• ???? Hand tools for access and mounting
• ???? Digital multimeter for verification
• ???? PPE including insulated gloves and eye protection

Capacitor should be securely mounted using existing brackets or approved hardware to prevent vibration-related wear. Terminal lugs must be inspected for signs of arcing or fatigue during replacement.

Job Site Reliability

The ClimaTek 12799 capacitor is a viable option for technicians servicing dual-motor systems where high-voltage tolerance and long-term operational stability are critical. It is applicable to rooftop units, split systems, and package units requiring a dual-value capacitor with minimal installation footprint.

Performance Summary

• ✅ Dual Rating Design – Efficiently supports both start and run circuits.
• ✅ 440V Compatibility – Suitable for HVAC systems exposed to elevated voltage input.
• ✅ Compact Installation – Round profile allows integration in narrow electrical compartments.
• ✅ Field-Ready Durability – Built for harsh environments and high service demands.

Professional Grade Component

Designed with the working technician in mind, the Mars 12799 / ClimaTek capacitor is engineered for reliable performance and extended service intervals. It meets expectations for contractors requiring tested, field-ready components to support dual motor operation in commercial and residential HVAC applications.