A system comprising: a printed circuit board having three phase conductors for conveying incoming three phase power from a source and for outputting three phase power to a three-phase load; a power supply mounted on and electrically coupled to the printed circuit board; control circuitry mounted on and electrically coupled to the printed circuit board and receiving power from the power supply; and three single pole relays (18, 20, 22) mounted on the printed circuit board and electrically coupled to respective phase conductors to receive the incoming power and to provide the outgoing power when closed, the relays each have a direct current operator that receives control signals from the control circuitry to switch in accordance with a point-on-wave, POW, switching scheme to close at desired times of an AC waveform of the incoming power and thereby complete current carrying paths from the source through the power conductors to the load; wherein the control circuitry is programmed to control switching based upon desired electrical switching angles between electrical parameters of the three phases of incoming power, comprising: characterizing the load and the source power parameters, comprising frequency, based on this characterization, computing the desired electrical switching angles and times for switching, or accessing from a remote or onboard storage the desired electrical switching angles and times for switching, and loading the desired electrical switching angles for use in determining best switching times for POW operation. a printed circuit board having three phase conductors for conveying incoming three phase power from a source and for outputting three phase power to a three-phase load; a power supply mounted on and electrically coupled to the printed circuit board; control circuitry mounted on and electrically coupled to the printed circuit board and receiving power from the power supply; and three single pole relays (18, 20, 22) mounted on the printed circuit board and electrically coupled to respective phase conductors to receive the incoming power and to provide the outgoing power when closed, the relays each have a direct current operator that receives control signals from the control circuitry to switch in accordance with a point-on-wave, POW, switching scheme to close at desired times of an AC waveform of the incoming power and thereby complete current carrying paths from the source through the power conductors to the load; wherein the control circuitry is programmed to control switching based upon desired electrical switching angles between electrical parameters of the three phases of incoming power, comprising: characterizing the load and the source power parameters, comprising frequency, based on this characterization, computing the desired electrical switching angles and times for switching, or accessing from a remote or onboard storage the desired electrical switching angles and times for switching, and loading the desired electrical switching angles for use in determining best switching times for POW operation. characterizing the load and the source power parameters, comprising frequency, based on this characterization, computing the desired electrical switching angles and times for switching, or accessing from a remote or onboard storage the desired electrical switching angles and times for switching, and loading the desired electrical switching angles for use in determining best switching times for POW operation.