Reliance 1SU21001 SP500 AC Drive is a compact, 1‑HP variable‑frequency drive designed for 200–230 VAC, three‑phase power and 50/60 Hz operation, enabling precise speed control of small industrial motors. Part of the SP500 family originally from Reliance Electric, this drive is commonly offered in a NEMA 1 enclosure for indoor installations. Electrical specs list a 200–230 VAC input with three‑phase output and a rated current around 7 A, suitable for standard 1 HP motors. Use cases include conveyors, pumps, fans, and machine tools where adjustable speed, torque, and ramped acceleration improve process efficiency.
