XJ3 Time Relay

XJ3 series phase failure and phase sequence protection 
relay is used to provide overvoltage, undervoltage and 
phase failure protection in three-phase AC circuits and 
phase sequence protection in irreversible transmission 
devices and features reliable performance, wide application 
and convenient use.
The protector starts to function when it is connected to the 
power control circuit in accordance with the drawing. 
When the fuse of any phase of the three-phase circuit is 
open or when there is a phase failure in the power supply 
circuit, the XJ3 operates immediately to control the contact 
to cut off the power supply of the AC contactor coil of the 
main circuit so that the main contact of the AC contactor 
operates to provide the load with phase failure protection.
When the phases of a three-phase irreversible device with 
predetermined phase sequence are connected incorrectly 
due to maintenance or change of the power supply circuit, 
the XJ3 series will identify the phase sequence, stop 
supplying power to the power supply circuit and achieve 
the goal of protecting the device.