Utilizing across the line, full voltage starting the FTA500 is the preferred controller whenever the utility or emergency generator set will permit this type of starting because of this low cost method. They are used for pressure maintenance in fire pump installations to prevent unnecessary cycling of the main fire pump.

Employing Wye-Delta (Open Transition) reduced voltage starting, the FTA516 Jockey Pump Controller is useful in applications where the power source is inadequate to supply the full starting current without objectionable voltage drop. Wye-Delta starting controllers are used with delta-wound induction motors.