The Fully Protected Transformer is fitted with three discrete windings. Any winding can be used as either a primary or a secondary, which increases the number of laboratory applications. Due to its numerous taps, the Fully Protected Transformer can be used with many different input and output voltages. For this reason, it can be used for impedance matching and other transformer experimentations. By using multiple Fully Protected Transformers, students can explore transformer phasing, distribution transformers, open- and closed-delta transformer configurations, delta-wye, wye-delta, wye-wye, and delta-delta connections. Other specialized transformer connections, such as Scott (three-phase to two-phase), three-phase to six-phase, and zig-zag connections are also possible. Furthermore, resettable fuses are used to protect the windings.

The Fully Protected Transformer is mounted in a half-size EMS module. The primaries and secondaries are terminated on the module faceplate to 4 mm color-coded safety sockets and are identified by schematic symbol, terminal number, voltage and current.