RPM AC High-Performance Inverter Duty AC Motors


The ABB Baldor-Reliance® RPM AC motor line delivers power-dense, inverter duty solutions designed for demanding variable speed applications. With flexible designs, advanced insulation, smart sensor compatibility, and sizes up to 1750 HP, these motors are engineered for high performance, reliability, and efficiency.

Key Points

  • Compact Power-Dense Design – Packs maximum torque into smaller frame sizes, often three sizes smaller than standard NEMA or IEC motors
  • Generation 3 Enhancements – Includes integral grounding brushes, ABB Ability™ Smart Sensor readiness, oversized conduit boxes, and up to 1750 HP capacity
  • Durable & Reliable – Features Class H insulation, premium enclosures (IP44–IP56), insulated bearings, and Positive Lubrication System for extended motor life
  • Quick Ship Program – Select RPM AC motors with configurable options ship in as little as 3–4 weeks from Gainesville, Georgia
  • Wide Range & Flexibility – From 1 to 1750 HP with customizable speed ranges, constant torque down to zero speed, and high efficiency options
  • Optimized for Variable Speed – 1000:1 constant torque, low rotor inertia, flexible base speed/power combinations, and continuous operation without derating
  • Application Versatility – Ideal for extruders, paper, metals, tire & rubber, machine tools, cooling towers, drilling rigs, and harsh industrial environments