Electronic Overload Relay

Technical Data

Electronic overload relays have been designed primarily to protect electric motors and associated electrical circuits. These devices operate on the principle of monitoring the current in a motor starter circuit which, when the current exceeds a pre set condition, or there is a loss of current in any phase, the device will initiate a trip circuit which in turn causes the power to the starter (contactor) to be disconnected thus making the circuit safe.

Product features and benefits:

  • Low power consumption: Saving space into cabinet
  • Great accuracy: Better motor protection
  • Full reliability: Low risk to burn motor
  • Phase unbalance protection: Better motor protection and current control
  • direct fitting to contactors Series CL: Compact starter
  • Interchangeable with thermal overload relay: No need to redesign existing cabinet
  • Multiple trip class selection: One device cover for start time motor
  • Manual / Auto reset: One device for two solutions

Main characteristics:

  • Setting range from 0.1 up to 150A
  • Self powered
  • Thermal memory
  • Phase loss protection
  • Phase unbalance protection
  • Direct fitting to contactors Series CL
  • Interchangeable with thermal overload relay
  • Multiple ttrip class selection
  • Manual / Auto reset
  • Increased flexibility, less order codes, less stock
  • Tripp class: 5 - 10 - 20 - 30



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