PowerFlex 4

The Allen-Bradley PowerFlex 4 (Bulletin 22A) is a compact AC variable-frequency drive designed for general-purpose speed control of three-phase and single-phase AC motors, covering output ratings from 0.4 kW (0.5 HP) up to 3.7 kW (5 HP). The catalog number follows a consistent structure: 22A identifies the PowerFlex 4 family, the next character indicates input voltage class (V = 120V single-phase, B = 240V three-phase, D = 480V three-phase), the following three or four alphanumeric characters encode the output current rating in tenths of an amp (e.g., D8P7 = 8.7 A, D6P0 = 6.0 A, D2P3 = 2.3 A), and the suffix characters denote enclosure type and firmware/hardware revision. Representative in-stock models include the 22A-D8P7H204 (5 HP, 480V, 8.7 A output), the 22A-B017H204 (5 HP, 240V, 17.5 A output), the 22A-D6P0F104 (3 HP, 480V), and the 22A-V6P0F104 (1.5 HP, 120V single-phase input). Buyers selecting between catalog numbers should pay close attention to the voltage-class character and current code to match motor nameplate requirements precisely.