Acme Electric buck-boost transformers (autotransformers) provide a simple and economical means of correcting off-standard voltages. They offer tremendous capabilities and flexibility in kVA sizes and input/output voltage combinations. You essentially get 75 different transformers in one convenient package. Any time a line voltage change in the 5-20% range is required, a Hubbell buck-boost transformer T2535163S should be considered as your first line of defense. With nearly two-thirds of all electrical loads being AC motor loads, maintenance of the proper voltage to that motor is very important. If the supply line voltage is not maintained, motor winding current is increased causing reduced motor torque and rising motor temperature, all of which results in the rapid loss of insulation life expectancy. When you have a lower than standard voltage, equipment damage and failure can result. Buck-boost transformers are an economical way to correct this potentially very serious problem.