The USAC Hybrid drives are a member of the ACCU‑SERIES family of variable speed products. The USAC Series of Adjustable Frequency Drives consist of eight inverter models rated for 1/8 to 10 HP motors. These drives are housed in heavy duty NEMA 4X / IP 65 die‑cast aluminum washdown/watertight enclosures for indoor or outdoor use. Hybrid drives are a digital drive with an analog interface.