gr1-160 ~ 630 series thermal overload relayit is mainly used for ac 50 hz or 60 hzrated voltage 660 v and below160-630 - a current circuitsas a motor overloadopen phaseprotect the starting time is too longespecially suitable for the protection of the motor overload situation
recommended match the gr1-160 ~ 630 of contactor see matching table
in line with the gb 14048.4, iec 60947-4-1

the product model and meaning

technical parameters