Allen-Bradley A4-3.7Kw AC Variable Frequency Drive

Allen-Bradley A4-3.7 kW AC Variable Frequency Drive is a compact PowerFlex 4 series motor controller designed to run 3‑phase induction motors from a 240 VAC supply. It provides up to 3.7 kW (5 HP) of output power with a 3‑phase input of 208–240 VAC and a nominal current around 17 A, making it suitable for small-to-mid‑range applications where space and simplicity matter. The drive comes in a frame size B with an IP20 enclosure and NEMA/UL Type Open construction, and it offers an onboard LED display with a fixed digital keypad for parameter setup and status monitoring. For system integration, the PowerFlex 4 supports RS‑485 communications, enabling connection to PLCs and other automation hardware. This model is widely referenced as a 3.7 kW, 240 V, 3‑phase PowerFlex 4 drive, valued for its compact footprint and straightforward configuration in light‑industrial drives environments.