RPM AC Inverter Duty

The ABB Baldor-Reliance® RPM AC Inverter Duty motor delivers high torque density in a compact, laminated steel frame—ideal for precise, variable speed control.

Designed for power. Refined for performance.

When space is limited, the ABB Baldor-Reliance® RPM AC motor delivers. Built with a laminated steel frame, RPM AC motors offer high torque density and custom power/speed ratings to meet the demands of variable speed applications.

 

Designed to fit where traditional motors can’t, RPM AC motors can be up to three frame sizes smaller than standard NEMA or IEC motors—without compromising performance. Multiple enclosure options ensure flexibility across diverse environments.

 

Drawing on decades of experience in variable speed DC technology, the RPM AC motor features a square laminated frame, optimized cooling and premium insulation for exceptional torque performance in a compact, efficient design.

Technical data

RPM AC motor is a must when your application demands high torque in a compact footprint with precise, reliable variable speed performance.

Up to 2250Hp

Power range 5 - 2250Hp (3.7 - 1678kW).

Protection Class H

Insulation system for maximum reliability and inverter use.

Torque range 1000:1

Constant torque from 0 to base; 150% available torque.

Frame RL5035Z

Frame size FL1838C (TENV) to RL5035Z (DPG-FV).

Ingress protection IP23 | IP55

DPG-FV is IP23 for indoor use, Enclosed is IP55 for outdoor harsh environment.

Rotor option IPM

Interior salient pole permanent magnet rotor for torque density and higher efficiency.

Explore the key features and benefits

The ABB Baldor-Reliance® RPM AC Inverter Duty motor delivers high torque density in a compact, laminated steel frame—ideal for precise, variable speed control.

Synchronous speed

Operates at true synchronous speed regardless of loads. Constant‑torque performance rated 1000:1 from zero to base speed.

Space-saving

Extremely power dense square laminated frame design (up to 3 frame sizes smaller than standard NEMA frame).

Inverter Duty

For use on inverters only. Includes integral shaft grounding brush as standard to mitigate against bearing currents.

DC retrofit

Drop-in design to modernize your applications: Ideal for constant power processes like winders, extruders and more.

Optimum pole design

Enables smoother, more efficient torque at low speeds for precise control in variable speed applications.

Protection

Three thermostats—one per phase—provide built-in thermal protection to prevent motor damage from overheating.

Premium features

Available with induction or caged IPM rotors, open or enclosed enclosures, PLS™ bearing system, and condition monitoring provisions.

Discover ABB's Innovative Software and Tools

Unlock the power of ABB's cutting-edge software and tools designed to simplify your industrial electric motor journey. Whether you're selecting, configuring, replacing, or upgrading, our intuitive tools are here to guide you every step of the way. With ABB, finding the perfect match for your motor needs has never been easier. Explore now and make the most informed choice for your operations.

Select your motor

Search our comprehensive list of ABB Baldor-Reliance® motors and gain access to detailed product specifications, technical data and product documentation.

Configure your motor

ABB’s Motor Connector is an online tool that allows experienced users to select, customize and configure motors to exactly match their performance and application needs. 

Replace your motor

Have an existing motor you’d like to convert to ABB? Use this tool to find your ABB motor.

Upgrade your motor

Use ABB's Energy Savings Calculator to estimate your energy savings and CO2 reduction – switch to a more sustainable motor solution today. 

Related Documents

RPM AC DPFV variable speed AC motor

ABB Baldor-Reliance®

RPM AC Drip-proof guarded force ventilated (DPFV) designs are ideal for compactness in relatively dry and clean environments.

RPM AC Totally enclosed variable speed AC motors

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RPM AC totally enclosed motors provide the highest level of performance and additional protection from harsh environments.

RPM AC and V*S Master

Technical Catalog

ABB Baldor-Reliance® is the widest, most comprehensive product line of motors designed specifically for variable speed control.

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