Baldor Electric Company VS1MD43 Variable Frequency Drive

The Baldor Electric Company VS1MD43 Variable Frequency Drive is a 3 HP (2.2 kW) AC motor controller designed to drive 3‑phase motors from 440–480 VAC. It supports open‑loop volts‑per‑hertz (V/Hz) control and also offers sensorless vector control for improved torque at low speeds. The VS1MD43 variant is specified for 460 V systems with a 50/60 Hz operating range and a 6.0 A current rating, making it suitable for moderate‑size industrial motors. The drive carries an IP20 enclosure rating and can be equipped with a NEMA 1 kit for additional environmental protection. Designed for a range of loads, it supports constant torque, variable torque, or constant horsepower applications, which makes it appropriate for conveyors, pumps, fans, and other machinery requiring precise speed control and smooth acceleration. As part of Baldor’s Reliance line, the VS1MD family integrates with Baldor motors and accessories to deliver reliable performance in industrial automation settings while providing straightforward configuration and operation within typical Baldor control systems.