Reliance Electric 1SU41001 Variable Frequency Drive

Reliance Electric SP500 VS AC Drive model 1SU41001 is a three‑phase, 1 horsepower variable frequency drive designed for 380–460 VAC input. It supports 50/60 Hz electrical systems and draws about 2.5 A from the mains, aligning with the SP500 drive family’s lower‑to‑mid power tier for high‑voltage service. This SP500 VS unit is explicitly configured for three‑phase operation at 380–460 VAC, making it suitable for controlling compatible induction motors in equipment powered by this voltage range. The SP500 family is manufactured by Reliance Electric, a brand historically associated with industrial drive solutions, and the 1SU41001 designation identifies this specific 1 HP, 2.5 A, 380–460 VAC, three‑phase model. In distributor catalogs and listings, the 1SU41001 is consistently described as a 1 HP SP500 drive intended for 380–460 VAC, 3‑phase installations, reflecting its role in retrofits and new designs requiring reliable high‑voltage motor control.