The Mars 11931 is a round start capacitor engineered to deliver the high-torque starting boost that single-phase HVAC motors demand. With a capacitance range of 124–149 microfarads and a 165VAC voltage rating, this capacitor is a dependable choice for technicians replacing failed or weak start capacitors in air conditioning, heat pump, and refrigeration equipment.
Key Specifications
- Brand: Mars
- SKU: 11931
- Capacitance Range: 124–149 Microfarads (MFD/µF)
- Voltage Rating: 165VAC
- Form Factor: Round
- Type: Start Capacitor
Features & Benefits
- Wide capacitance tolerance (124–149 MFD) allows compatibility across a broad range of motor applications
- 165VAC rating suitable for standard single-phase motor starting circuits
- Round housing design for easy installation in OEM and aftermarket capacitor brackets
- Built to withstand the high-current, short-duration demands of motor start cycles
- Trusted Mars quality for long service life and consistent performance
Application
Start capacitors are used in single-phase motors to provide the extra phase shift and torque needed during startup. Once the motor reaches operating speed, the start capacitor is switched out of the circuit. The Mars 11931 is ideal for use in compressors, condenser fan motors, and other HVAC motor applications requiring a 124–149 MFD, 165VAC start capacitor.








