Product overview DTA series Thermal Overload Relay have thermal overload protection and lack-phaseprotection of motor,manual or automatic reset function and temperature compensation function.It's inner setting the auxiliary contacts ofi Normal Open or 1 Normal Colse,it can be used byinstalling independently or hanging in the lower contactor.
It is mainly applied to motor's thermal relay overload protection and lack-phase protection.The main technical data: Main Circuit Rating Current: 0.1-850 A