Inverter & Vector Duty Motors for Precision Control
High-Efficiency Motors Ideal For Inverter And Vector Duty Systems
Inverter and Vector Duty motors are engineered for precise variable speed control in demanding applications. Built to withstand increased heat from VFD operation, these motors deliver reliable performance and extended service life. Vector Duty motors offer continuous constant torque from zero to base speed, making them ideal for conveyors, pumps, fans, and process equipment.
ESR Motor Systems stocks a wide range of Inverter Duty motors and provides access to premium Vector Duty models from leading manufacturers.
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Marathon’s Inverter/Vector Duty lineup includes the MICROMAX, Black MAX, and Blue MAX 2000 series. These motors span popular ranges such as 1–350 HP in Blue MAX and ¼–30 HP in Black MAX, with common 230/460 V offerings and 575 V options available across part numbers. ESR Motor Systems supplies and supports the full MAX family from Marathon, with access to factory inventory and resources, plus options like encoders, blowers, and brakes to match your application. Learn More >
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Toshiba’s inverter and vector duty lineup includes Vector Ready, EQP Global Severe Duty, and Quarry Duty motors, all engineered for modern VFD and vector control applications. Built on Toshiba’s rugged EQPIII platform, these motors exceed NEMA MG1 Part 31 inverter-duty requirements and feature TEFC cast-iron construction and insulation systems suited to demanding industrial environments. Learn More >
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U.S. MOTORS’ inverter and vector duty lineup includes ACCU-Torq®, UNIMOUNT®, HOSTILE DUTY™, and CORRO-DUTY® Vertical HOLLOSHAFT® motors for demanding VFD applications. ACCU-Torq delivers up to a 5000:1 constant-torque speed range with optional encoders, while UNIMOUNT and HOSTILE DUTY TEFC designs (1–200 HP) and CORRO-DUTY Vertical HOLLOSHAFT motors feature robust Class H insulation. Learn More >
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ABB Baldor-Reliance RPM AC Vector Duty and RPM AC Inverter Duty motors deliver zero-speed constant torque with up to a 1000:1 speed range from 1/3 to 500 HP. Insulated bearings, encoder provisions, corona-free insulation, and 200% torque overload suit demanding closed- and open-loop applications, with ESR Motor Systems providing local ABB inventory and support. Learn More >
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LEESON Speedmaster, Inverter, and Vector Duty AC motors offer precise speed control with up to a 2000:1 constant-torque range, inverter-rated Class H insulation, and encoder-ready designs. ESR Motor Systems supplies LEESON Inverter/Vector Duty models from 1 to 350 HP with fast delivery through LEESON’s U.S. warehouse network for reliable constant-torque performance. Learn More >
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