AC-2020 Series 3-Phase Compressor Protector

The AC 2020 compressor protector provides multi-mode time delays, reset selections and a memory capability which indicates using LED’s, the last fault condition. This offers not only protection for the compressor in adverse electrical conditions, but also a method to readily determine the type of fault occurrence.



  • Automatic Voltage Ranging
  • Universal Control Voltage
  • Condition/Fault Indicators
  • Automatic/Manual Reset
  • Last Fault Memory
  • Delay-On-Make
  • Delay-On-Break
  • Auxiliary Contacts
  • Easy Installation
  • Protects against:• Phase Loss
    • Under Voltage
    • Over Voltage
    • Phase Reversal
    • Short Cycling