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