Allen-Bradley 140141 Transistor For PowerFlex 1336 VFD

The Allen‑Bradley 140141 transistor is a high‑power semiconductor switching device designed for the inverter output stage of a PowerFlex 1336 variable frequency drive, where it controls motor voltage and frequency by rapidly switching the DC bus to shape the output waveform. Installed inside the VFD’s power module, it enables precise speed and torque control for 40–50 HP three‑phase motors and is used in maintenance and replacement to restore drive performance. Manufactured by Rockwell Automation / Allen Bradley, this device is specified for the PowerFlex 1336 series as a power transistor / inverter switching device with a function of high‑speed switching to produce controlled AC output. Cooling is provided by the drive’s heatsink or forced‑air system, and mounting is within the internal drive power module for industrial electrical enclosures. In industrial automation environments deploying PowerFlex 1336 drives, the transistor supports smooth speed regulation and robust motor protection by enabling efficient power conversion at the inverter output in applications such as pumps, fans, conveyors, compressors, mixers, and material handling systems.