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:

• Low power consumption                                            
• Great accuracy                                                              
• Full reliability                                                                  
• Phase unbalance protection                                       
• Interchangeable with thermal overload relay
• Multiple trip class selection
• Manual / Auto reset     

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