HOME > Library > Inserting Reverse Pole Preventing Circuit     In case the provided R, S, T phases are not appropriate for your machines, we have integrated our product with a Reverse Pole Prevention Circuit to prevent electric current from flowing. In case the phases are not appropriate for your system, connect two of the R.S.T. phases to start normal operation. If R.S.T. phases are not appropriate for your system, the electro-mechanical device will not operate.