Description
Mars 11919 Round Start Capacitor Overview
The Mars 11919 is a heavy-duty round start capacitor engineered to deliver the high-torque starting boost that single-phase HVAC motors demand. With a wide capacitance range of 270–324 microfarads and a rated voltage of 110/125VAC, this capacitor is a dependable solution for compressors, fan motors, and other motor-driven HVAC equipment requiring reliable startup performance.
Key Specifications
- Capacitance Range: 270–324 Microfarads (MFD/µF)
- Voltage Rating: 110/125VAC
- Form Factor: Round
- Type: Start Capacitor
- SKU / Part Number: 11919
- Brand: Mars
Features & Benefits
- Wide capacitance tolerance (270–324 MFD) provides flexibility across a range of motor applications
- Round housing design for easy installation in standard capacitor brackets and mounts
- Built to withstand the high-current, short-duration demands of motor starting cycles
- Compatible with single-phase compressors, condenser fan motors, and blower motors rated for 110/125VAC
- Mars quality construction ensures consistent performance and long service life
Application
Start capacitors are used in conjunction with start relays or hard-start kits to provide the extra torque needed to get single-phase motors running under load. The Mars 11919 is well-suited for residential and light commercial HVAC systems where a 110/125VAC start capacitor in the 270–324 MFD range is required. It is commonly used as a direct replacement in air conditioners, heat pumps, and refrigeration equipment.
Installation Notes
- Always discharge capacitors before handling — stored charge can cause serious injury
- Match capacitance and voltage ratings to OEM specifications before installation
- Use with an appropriate start relay; start capacitors are not designed for continuous duty
- Consult equipment wiring diagrams to ensure correct terminal connections
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