Power transformers; electric apparatus and instruments, namely, frequency inverters, electronic controllers for the following, namely, for use with soft-starters, motor control units, electric circuit breakers, medium voltage cubicles, servoconverters, converters and power transformers; programmable controllers, namely, electronic control boards, speed regulators in the nature of electronic speed controllers, Proportional, Integral and Derivative control (PID) regulators; motor transport units, namely, maneuver and control units for regulating start-up electrical motors, electric fuses, electric contactors, electric relays, electric surcharge relays, electric motor-protection relays, electronic relays, electric control panels, dielectrical transformers, electronic signaling keys, electronic controllers for starters; linking terminals, namely, electronic couplers, and keypads, electric switches and knobs for the aforementioned goods within this class; electrical soft-starters; variable frequency drives, namely, variable speed drives, frequency inversors to control the speed and torque of electric motors; starters for electric motors; soft-starters for motors; structural and replacement parts therefor for the aforementioned goods within this class