Product Overview
The Mars 11943 is a heavy-duty round start capacitor engineered to deliver reliable motor starting performance across a wide range of HVAC and refrigeration applications. With a capacitance range of 56–72 microfarads (MFD) and a voltage rating of 220/250VAC, this capacitor provides the high-torque starting boost required by single-phase compressor and fan motors.
Key Features
- Capacitance range: 56–72 MFD (microfarads)
- Voltage rating: 220/250VAC
- Round form factor for easy installation in standard capacitor mounts
- Designed for single-phase motor starting applications
- Compatible with a wide range of HVAC compressors, fan motors, and blower motors
- Durable construction for long service life in demanding environments
- Mars brand quality — trusted by HVAC professionals nationwide
Application
Start capacitors are used to provide an extra phase shift and torque boost during motor startup. Once the motor reaches operating speed, the start capacitor is switched out of the circuit. The Mars 11943 is well-suited for residential and light commercial HVAC systems, including air conditioners, heat pumps, and refrigeration units that rely on single-phase motors.
Why Choose Mars Capacitors
Mars (Motors and Armatures) has been a trusted name in the HVAC industry for decades, manufacturing a comprehensive line of capacitors, motors, and electrical components built to OEM and aftermarket standards. The 11943 is an ideal direct replacement for worn or failed start capacitors, helping restore equipment to full operation quickly and efficiently.








