Motor Hard Start Capacitors – HHS Series from Hartland Controls/Littlefuse

DCS Hartland Littlefuse HHS Series Motor Hard Start Capacitor 1 400

February 10, 2022

Hartland Controls, a Littelfuse Company‎, offers easy-to-install hard start kits that improve efficiency in compressors. ‎Hard start capacitors allow A/C units and heat pump ‎compressors to start up at maximum efficiency, allowing the unit to reach a normal rated speed up to ten times faster. Hard start ‎capacitors are also ‎useful in difficult conditions, such as low voltage or undersized wiring, and reduce light dimming during ‎‎compressor start-up. The HHS series capacitors eliminate the heat surge that typically occurs at start-up and help extend the life ‎of ‎the compressor, terminals, windings, and capacitor‎.



  • •Ideal solution for replacing three components in a system with a run capacitor
  • •Solid state relay and capacitor
  • •Easy wire installation
  • •Helps older compressors start and run cooler
  • •Easy mount clip or screw mount for quick installation
  • •UL® Recognized
  • •NATE® Recognized (select capacitors)



  • •HVAC high-efficiency compressors or refrigeration units of ½ HP up to 10 HP
  • •Hard starting compressors
  • •Low voltage situations

 DCS Harland Littlefuse AC Relay for HVAC and Industrail Switching 4 400

For more information, visit the HHS Series product page by clicking here


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