MARS 12786 Run Capacitor

Experience reliable motor performance with the MARS 12786, a professional-grade 40/5 Microfarad 440Vac Round Dual Run Capacitor engineered for demanding HVACR applications. This JARD 12786 dual run capacitor provides consistent phase-shift power for both the compressor (40 MFD) and the condenser fan motor (5 MFD). Designed as a high-performance HVAC replacement capacitor, it serves as a direct drop-in for 440V and 370V systems, ensuring capacitor compatibility across a wide range of residential and light commercial condensing units. Technical specifications include a durable aluminum case, non-PCB oil-filled construction, and a refined metalized polypropylene film dielectric for thermal stability. Rated for -40C to 70C, this 40/5 MFD 440V run capacitor features standard 1/4 inch quick-connect terminals and a built-in pressure-sensitive interrupter for circuit safety. Whether you are performing a routine maintenance call or a post-season repair, the MARS 12786 maintains electrical integrity under high-cycle loads.

• Dual-Rated Voltage: Operates at both 370 VAC and 440 VAC, reducing inventory needs on the service truck.
• Rugged Construction: Encased in a corrosion-resistant aluminum housing with a rolled edge for superior moisture protection.
• Industry Certified: UL and CUL recognized, meeting stringent safety standards for North American HVAC systems.
• Reliable Life Cycle: Engineered for up to 60,000 hours of operational life when installed within rated temperature parameters.

Can I use a 440V capacitor to replace a 370V part?
Yes, you can always up-rate the voltage. Replacing a 370V capacitor with a 440V MARS 12786 provides higher dielectric strength and can improve component longevity.

What are the physical dimensions of the MARS 12786?
This round dual run capacitor has a 2-inch diameter and a case height of approximately 3.875 inches (4.375 inches including terminals), fitting most standard mounting brackets.

How do I identify the proper terminal connections?
The terminals are clearly marked: 'C' for Common, 'Herm' for the Compressor (40 MFD), and 'Fan' for the Fan Motor (5 MFD).

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.