MARS 12998 Run Capacitor

The MARS 12998 Run Capacitor is a commercial-grade 10 MFD 370V round capacitor engineered for demanding HVACR applications. Designed as a direct replacement for 1094956, this motor-run component facilitates continuous power to fan motors and compressors, ensuring high power factor and motor efficiency. Built with a rugged aluminum case and oil-filled construction, the MARS 12998 is rated for up to 60,000 hours of operational life, maintaining capacitance stability in extreme temperature ranges from -40°C to +70°C. Its compact 1.75-inch diameter allows for easy mounting in tight electrical cabinets, while the 4-terminal configuration provides versatility for field wiring and common lead connections. For contractors looking for a reliable HVAC motor run capacitor, this unit meets EIA-456-A standards and features an internal pressure sensitive interrupter for safety.

Technical Specifications & Key Benefits:

• Broad Compatibility: Serves as a universal round run capacitor for residential and light commercial condensers.
• Physical Dimensions: Features a 2-inch case height and 1.75-inch width, making it an ideal 10 microfarad capacitor for restricted spaces.
• Environmental Resilience: Engineered to withstand high-ambient heat typical of outdoor condenser environments.
• Reliable Terminations: Equipped with standard 1/4-inch quick-connect terminals for secure electrical paths.
• Efficiency Standards: Optimized for 370Vac applications to minimize energy loss and reduce motor heat.

Common Questions for Technicians:

Can I use a 440V capacitor to replace this 370V model?
Yes, you can substitute a higher voltage rating (440Vac) for a 370Vac capacitor, provided the 10 MFD capacitance and physical dimensions are identical. Never install a capacitor with a lower voltage rating than the original.

What does the 4-terminal setup signify?
The four terminals per post allow for multiple wire connections (such as "Com," "Fan," or "Herm") to be bridged easily without needing external splice connectors, simplifying the circuit path.

How do I confirm if my capacitor has failed?
Check for physical signs like bulging at the top or leaking oil. Use a multimeter to test for 10 MFD (+/- 6% tolerance); if the reading is outside this range, the capacitor is likely the cause of motor start failures or high amp draw.

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.