The Allen-Bradley 1331-OAF05 is a compact open-frame variable frequency drive (VFD) designed to power a 1/2 HP motor from a 230 V AC supply. Rated at 0.37 kW (½ HP), it supports 50/60 Hz operation and draws 5.3 A input with a 1.22 kVA input rating, delivering 2.3 A output and 0.92 kVA with about 70 W of heat dissipation. The OAF05 is a single‑phase, open enclosure model intended for panel or machine mounting in light‑industrial setups where precise speed control of small motors is required. Its branch circuit protection recommendation is 10 A to match its electrical load characteristics.
