Description
The Tecumseh K71-05 is a genuine OEM potential relay engineered to provide dependable start-winding dropout for single-phase hermetic and semi-hermetic compressors used in HVAC and refrigeration applications. Potential relays work by sensing the back-EMF (electromotive force) generated in the start winding as the compressor motor accelerates to operating speed, then opening the start circuit at the correct moment to protect the motor and improve efficiency.
Key Features
- Genuine Tecumseh OEM replacement potential relay
- Designed for use with single-phase compressor motors requiring start-winding assistance
- Senses back-EMF to accurately time start-winding dropout
- Helps reduce motor starting current and thermal stress on compressor windings
- Compact, robust construction for long service life in demanding HVAC and refrigeration environments
- Direct OEM replacement ensures proper fit and function
Applications
- Residential and light commercial air conditioning systems
- Refrigeration equipment using Tecumseh compressors
- Heat pump systems
- Walk-in cooler and freezer compressor units
Why Use a Genuine Tecumseh Potential Relay?
Using a factory-specified potential relay ensures the start and run characteristics of your compressor are maintained to OEM standards. An incorrect or worn relay can cause hard-start failures, compressor overheating, and premature motor burnout. The K71-05 is the correct specification relay for compatible Tecumseh compressor models, giving technicians confidence in every installation.
Installation Notes
- Always verify compressor model compatibility before installation
- Disconnect all power before servicing electrical components
- Refer to the compressor wiring diagram for correct terminal connections
- Inspect start and run capacitors when replacing the potential relay
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