Allen-Bradley 1305 BA03A Micro Drive

Allen-Bradley 1305-BA03A Micro Drive is a 3-phase adjustable-frequency AC drive from Rockwell Automation's 1305 Series, designed to provide precise speed control for small to mid-size motors. It accepts 380–460 V three-phase input at 50/60 Hz and delivers a matching 380–460 V three-phase output, with a motor rating of 1 HP (0.75 kW). The unit lists an input current of about 2.2 A and an output current of about 2.3 A, and it supports an output frequency range from 0 to 400 Hz to enable speed and torque control across varying load conditions. The BA03A variant is documented in Rockwell’s 1305 Adjustable Frequency AC Drive manuals as part of the Series A/B family, reflecting its role within the mid-range of the 1305 drive lineup. Variants such as BA03A-HAP appear in field catalogs, indicating packaging or configuration differences within the BA03A family. In industrial automation, it provides straightforward variable-speed control for three-phase motors that require a compact, fixed-voltage-range drive.