Over-current control relay TCC-H series

under-currentDPCOAC/DC

• level and hysteresis adjustments • LED indicators for power supply, • contact and reaction timer On application of the supply voltage the output relay pulls in and the timing period ts starts. Current control with no latch (auto reset) function. At the end of ts, when the measured current exceeds theset threshold, timing period tr starts. At the end of tr the output relay changes over if the current measurement still exceeds the threshold. The output relay resets imme- diately when the monitored current reaches the hysteresis set value. Current control with latch (manual reset) function. At the end of , if the measured current exceeds the set threshold, timing period starts. At the end of the output relay changes over and remains in this condition, even if the monitored current reaches the hysteresis set value. An external reset (S1) must be operated to reset the relay