Run Start Capacitor, Round, 65/10 MFD, 440/370

Mars 12862 – Dual Value Run Capacitor for HVAC Motor Systems

The Mars 12862, also branded under ClimaTek, is a dual-value motor run capacitor engineered for use in permanent split capacitor (PSC) motor circuits. Rated at 65/10 microfarads (MFD) and 440V AC, this capacitor supports both compressor and fan motor operation from a single component, making it suitable for residential and light commercial HVAC equipment requiring high-reliability start and run functionality.

Its compact round design with hermetically sealed aluminum housing ensures stable operation in systems subject to voltage fluctuation and thermal cycling. This model is frequently specified for field replacements and OEM-equivalent upgrades in air conditioning and heat pump systems.

Technical and Performance Highlights

• ✅ Dual Capacitance Configuration – Combines 65 MFD and 10 MFD values in a single unit, designed for two-motor operation (e.g., compressor and condenser fan).
• ✅ 440V AC Voltage Rating – Allows use in high-voltage environments and helps maintain electrical stability during peak demand periods.
• ✅ Aluminum Canister – Round form factor with corrosion-resistant shell and crimped terminals for vibration protection and secure fitment.
• ✅ Moisture-Resistant Sealing – Hermetically sealed to protect internal dielectric materials from contaminants and environmental degradation.

Technical Specifications

• Model: Mars 12862
• Capacitance: 65/10 MFD (Microfarads)
• Voltage Rating: 440V AC
• Type: Dual Motor Run Capacitor
• Shape: Round

Installation and Field Handling

Installation of this component must be performed by a qualified technician. Prior to installation, ensure complete power isolation and proper discharge of the failed capacitor. Match capacitance and voltage ratings precisely to the system’s specifications. Use a calibrated multimeter to confirm expected MFD readings before and after installation.

• ???? Hand tools for mounting access and removal
• ???? Digital multimeter with capacitance mode
• ???? Appropriate PPE (gloves, eyewear, arc-rated gear as applicable)

Capacitor must be mounted securely to avoid operational stress and terminal loosening. All electrical connections should be verified for fit and corrosion-free contact.

Service Suitability

The Mars 12862 is intended for systems requiring precise dual-capacitance operation with a high voltage tolerance. It is appropriate for rooftop package units, split systems, and air-cooled condensing units using PSC motors. Designed for extended-duty cycles, it provides consistent motor torque and improved startup reliability in equipment exposed to continuous load.

Contractor-Focused Advantages

• ✅ High Load Endurance – Maintains performance under variable operating conditions and thermal stress.
• ✅ Simplified Inventory – Dual rating supports multiple motor circuits with a single replacement part.
• ✅ Code-Compatible Construction – Designed and manufactured in accordance with industry safety and performance standards.
• ✅ Trusted Component Line – Widely used across OEM and aftermarket HVAC service channels.

Professional Summary

The Mars 12862 dual motor run capacitor offers the electrical stability and mechanical durability required for critical HVAC motor applications. It supports long-term service intervals while maintaining compliance with system design tolerances. For technicians performing high-frequency capacitor replacements or stocking universal service vehicles, the 12862 provides dependable performance in a wide range of high-demand environments.