a second contactor and the third contact 356 and the third coil 362 may collectively comprise a third contactor the system 350 further includes a first local printed circuit board 364 in communication with the first coil 358 a second local printed circuit board 366 in communication with the second coil 360 and a third local printed circuit board 368 in communication with the third coil 362 each of local printed circuit boards 364 366 368 are configured to control the respective movable portions of the contacts 352 354 356 via the respective coils 358 360 362 in general each of the local printed circuit boards 364 366 368 are configured to receive commands from and report status to a master control device e g master control system 195 of fig1 that is held near ground potential each of the local printed circuit boards 364 366 368 are also configured to deliver pulses of energy to the respective coils 358 360 362 as needed to change the position of the movable portions of the respective contacts 352 354 356 and to recognize the position of the movable portions of the respective contacts 352 354 356 each of the local printed circuit boards 364 366 368 may obtain control power from the input lines which are connected to input terminals a b c of the power cell as shown in fig1 one or more position sensing devices labeled psd in fig1 may be utilized to provide the local printed circuit boards 364 366 368 with the respective positions of the movable portions of the contacts 352 354 356 according to various embodiments the position sensing devices may be embodied as switching devices hall effect sensors optical sensors etc for embodiments where the coils 358 360 362.