MARS 11970 Start Capacitor

Pros in the field know that the MARS 11970 Start Capacitor is a reliable choice for providing the high-torque boost required to get heavy-duty compressors and motors running under load. This 270-324 Microfarad 330Vac Round Start Capacitor is engineered to meet 11970 specifications, housing electrolytic elements within a rugged, hermetically sealed black bakelite case. This construction is essential for protecting internal components from the oil, dirt, grease, and moisture common in demanding HVAC capacitor replacement environments. Measuring approximately 4-3/8 inches in height and 2 inches in diameter, it fits standard mounting brackets for seamless integration. Designed for intermittent duty, this motor start capacitor effectively assists during the startup cycle of air conditioners and heat pumps, ensuring the system reaches operating speed quickly to prevent winding overheating. Whether you are performing a routine AC capacitor fix or a complete HVAC repair, the MARS 11970 offers the professional-grade performance needed to reduce service callbacks and maintain system efficiency.

• Broad Compatibility: Serves as a direct replacement for various OEM part numbers, including the Copeland 914-0006-10.
• Environmental Protection: The bakelite housing resists common job site contaminants and moisture for stable performance.
• High Torque Output: Provides a precise 270-324 MFD range to ensure reliable starting for 330V residential and light commercial motors.
• Standardized Fit: Round 11970 form factor ensures compatibility with most existing terminal connections and mounting hardware.

Can I use a start capacitor with a higher voltage rating?
Yes, you can replace a lower-voltage capacitor with a higher-voltage unit like this 330V model, provided the microfarad (MFD) range matches the original equipment manufacturer's specifications.

How do I tell if my motor start capacitor has failed?
Common indicators include a bulging top, visible leaking of electrolytic fluid, or a motor that hums but fails to turn over. Using a multimeter to check the MFD output is the most accurate diagnostic method.

What is the difference between a start capacitor and a run capacitor?
A start capacitor like the MARS 11970 stays in the circuit only long enough to bring the motor up to speed before being disconnected, whereas a run capacitor stays active to improve power factor and efficiency während operation.

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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.