MARS 12794 Run Capacitor

For high-performance single-phase HVAC systems requiring a reliable motor-start and run boost, the MARS 12794 delivers industrial-grade stability. This 60/5 MFD dual run capacitor is engineered for heavy-duty service, effectively managing both the compressor and the outdoor fan motor from a single, space-saving round aluminum case. Rated for 440VAC, it is fully backward compatible with 370V systems, providing a significant safety margin against voltage spikes. Built with metallized polypropylene film and a non-PCB electrolyte, it features a pressure-sensitive interrupter (PSI) to ensure safe failure in extreme conditions. Designed for universal field replacement, this unit meets UL and CSA standards, making it a staple for techs servicing residential and light commercial condensers. The standard 1/4-inch quick-connect terminals simplify wiring, especially when swapping out failed OEM units in the heat of a service call. Whether you are performing a routine preventative maintenance check or an emergency swap, this JARD by MARS component provides the capacitive tolerance required to maintain peak motor amperage and system efficiency.

• Dual Section Design: Consolidates the 60 microfarad compressor and 5 microfarad fan requirements into one component for faster installation.
• High Dielectric Strength: The 440V rating offers superior insulation versus 370V alternatives, extending service life in high-ambient environments.
• Internal Safety Interrupter: Integrated pressure-sensitive protection prevents case rupture during end-of-life electrical failure.
• Environmental Resilience: Housed in a corrosion-resistant aluminum canister rated for continuous operation up to 70°C (158°F).
• Universal Replacement: Standard physical dimensions ensure compatibility with existing mounting brackets in most major HVAC equipment brands.

Can this 440V capacitor replace my existing 370V unit?
Yes. In HVACR applications, you can always increase the voltage rating of a capacitor but never decrease it. The 440V rating ensures the internal components can handle higher electrical stress.

What happens if the microfarad (MFD) rating doesn't match?
You must always match the MFD rating exactly. Using a 60/5 MFD capacitor when your motor calls for a different value can lead to overheating, increased amperage draw, and premature motor failure.

Does the physical size of the round case matter?
While the electrical specs are the priority, these units generally follow standard sizing. If the new unit is slightly smaller, it may require a tightening of the mounting strap to ensure it stays secure during unit vibration.

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.