The Boost Box Control is designed to assure adequate power for reliable operations of specific applications of VBM solenoid operated switches.

Some substation layouts have long distances between the switch and the 120VAC station transformer or 125VDC battery bank.  The unanticipated impedance combined with the high current may result in an excessive voltage drop to the switch.  The switch will compensate by taking longer to operate, but occasionally the compensation will be inadequate.

A practical and simple way to offset the undesired voltage drop is with the addition of energy storage capacitors.  The Boost Box is inserted in series with a pendant cable going from the existing control to the switch, as seen in the above drawing.  The Boost Box contains energy storage capacitors (in blue in image) which are then used to operate the switch.