MARS 12906 Run Capacitor

The MARS 12906 Oval Run Capacitor is a standard-setting component for service technicians requiring a reliable 6 MFD 370V run capacitor for single-phase motor applications. Built to handle continuous duty cycles in demanding HVACR environments, this oval run capacitor features a non-PCB, oil-filled design enclosed in a rugged aluminum case. With a temperature operating range from -40°C to 70°C, it is engineered for placement in condenser fan motors and blower motor assemblies where thermal Stability is non-negotiable. The MARS 12906 utilizes a high-grade metallized polypropylene film and includes an internal physical interrupter for enhanced safety during catastrophic failure events. This HVAC capacitor replacement is rated for 50/60 Hz and meets professional-grade UL and CUL standards, ensuring seamless compatibility across a wide range of OEM equipment. Whether you are performing a seasonal AC tune-up or troubleshooting a non-starting motor, this run capacitor 6uF 370VAC provides the precise phase shift necessary to optimize motor torque and efficiency.

• Optimized Motor Performance: Delivers a consistent 6 microfarad capacitance to maintain running torque and minimize amperage draw.
• Safety-First Construction: Features a built-in pressure-sensitive interrupter and a non-PCB, environmentally safe dielectric oil.
• Universal Compatibility: Standard oval form factor (approx. 2.06" x 1.21") fits most OEM mounting brackets in residential and light commercial units.
• Extended Service Life: Encased in a rust-resistant aluminum housing designed to withstand high-vibration applications.
• Quad-Terminals: Quick-connect terminals allow for flexible wiring configurations during field installation.

Can I use a 440V capacitor to replace this 370V model?
Yes. In HVACR applications, you can always upgrade to a higher voltage rating (e.g., replacing 370V with 440V), provided the microfarad (MFD) rating remains exactly at 6 MFD and the physical dimensions allow for proper mounting.

How do I know if my 6 MFD run capacitor has failed?
Visual signs include a "bulged" or leaking top. Technically, you should use a multimeter with a capacitance setting; a reading more than 6% outside the 6 MFD specification indicates it is time for a replacement.

Does it matter which wire goes to which terminal on a single-run capacitor?
No. For single-section run capacitors like the MARS 12906, the terminals are not polarized. However, ensure all leads are securely connected to the quad-terminals to prevent arcing.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.