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20G1F3E760LNDNNNNN — Detailed Product Introduction, Specifications, Applications, Advantages and Related Models

1. Product Overview

Model: 20G1F3E760LNDNNNNN

Brand: Allen-Bradley

Series: PowerFlex 755

Product Type: Air-cooled AC packaged variable frequency drive

Drive Class: High-power industrial AC drive

Frame: Frame 9

Input: 600 VAC class, three-phase AC

Rated Normal-Duty Current: approximately 760 A

Normal-Duty Power: approximately 800 HP

Light-Duty Rating: approximately 900 HP / 825 A

Heavy-Duty Rating: approximately 700 HP / 690 A

Enclosure / Installation Style: Floor-mounted, Type 1 / IP21 style packaged configuration

Cooling Method: Forced-air / air-cooled

Control Platform: PowerFlex 755 architecture

Human-Machine Interface: Door-mounted HIM configuration

The 20G1F3E760LNDNNNNN is a high-power variable frequency drive intended for large industrial motor applications where conventional low-power VFDs are not sufficient. It belongs to the PowerFlex 755 family and uses a large Frame 9 construction for high-current motor control.

The model is designed around a 600 VAC three-phase electrical system and provides a normal-duty current rating of approximately 760 A. In its normal-duty configuration, it corresponds to approximately 800 HP, while its duty-class ratings allow different motor-loading requirements to be accommodated.

This type of drive is typically used where the motor requires substantial starting torque, controlled acceleration and deceleration, adjustable operating speed, process control, or energy management. Typical installations include pumps, fans, compressors, conveyors, large process machinery, mixers, extruders, material-handling equipment and other high-power rotating machinery.

The large Frame 9 construction is particularly suited to centralized industrial installations. Unlike compact wall-mounted drives used for smaller motors, this type of equipment is normally installed as part of a larger electrical cabinet, MCC-style lineup, drive room, or dedicated motor-control system.

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2. Basic Technical Parameters

Parameter	Specification
Model	20G1F3E760LNDNNNNN
Brand	Allen-Bradley
Product family	PowerFlex 755
Product type	Air-cooled AC packaged drive
Drive application	Variable frequency motor control
Input voltage	600 VAC class
Input phase	Three-phase
Frequency	50/60 Hz industrial AC supply
Normal-duty current	760 A
Normal-duty power	Approx. 800 HP
Light-duty current	Approx. 825 A
Light-duty power	Approx. 900 HP
Heavy-duty current	Approx. 690 A
Heavy-duty power	Approx. 700 HP
Frame size	Frame 9
Cooling	Forced-air / air-cooled
Mounting	Floor-mounted
Enclosure style	Type 1 / IP21 style packaged configuration
HIM	Door-mounted HIM
Motor control	Adjustable-speed AC motor control
Intended motor type	Industrial AC motors
Installation environment	Industrial electrical room / MCC / dedicated drive area
Construction	High-power modular cabinet construction
Approx. cabinet height	2453 mm
Approx. cabinet width	1200 mm
Approx. cabinet depth	600 or 800 mm, depending on configuration
Approx. weight	1246 kg
Approx. shipping/installation weight	Can be substantially higher when option cabinets are included
Cooling requirement	High-capacity forced-air ventilation
Application class	Large industrial machinery
Control purpose	Speed, torque and process control

The published Frame 9 cabinet data gives an approximate height of 2453 mm, width of 1200 mm, and depth of either 600 or 800 mm for the IP20/NEMA Type 1 MCC-style cabinet configuration. The approximate weight is 1246 kg. Actual dimensions and mass can change with cabinet options, disconnects, filters, input arrangements, and other factory-installed equipment.

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3. Detailed Explanation of the Model Number

The catalog number 20G1F3E760LNDNNNNN contains configuration information associated with the PowerFlex 755 product family.

The most useful portion for identifying the main electrical capability is the 760 rating designation, which corresponds to approximately 760 A in the normal-duty configuration.

The 600 V-class three-phase configuration and Frame 9 construction place this model in the high-power end of the PowerFlex 755 range. The same family contains numerous current and voltage combinations, allowing the basic PowerFlex 755 platform to be matched to different motor ratings and industrial applications.

The final LNDNNNNN portion represents a particular factory configuration rather than a generic 755 drive. For purchasing or replacement purposes, the complete catalog number should therefore be retained rather than replacing it with only the family name.

This is especially important for high-power drives because two drives that appear similar by horsepower can differ in voltage class, current rating, enclosure construction, input configuration, options, communications and control hardware.

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4. Product Description

The 20G1F3E760LNDNNNNN is a large industrial AC variable frequency drive designed to regulate the speed and torque of high-power three-phase motors.

Instead of operating a motor directly from a fixed-frequency electrical supply, the drive controls the electrical power delivered to the motor. By adjusting output frequency and voltage according to the selected control method, the drive can regulate motor speed and provide controlled acceleration and deceleration.

For a large motor, this provides several practical benefits.

A motor can be accelerated gradually instead of being connected directly to the supply at full starting conditions. This can reduce mechanical shock to couplings, gearboxes, shafts, belts and driven machinery.

The drive can also reduce motor operating speed when the process does not require full capacity. For applications such as centrifugal pumps and fans, this can provide significant operating flexibility and may reduce energy consumption compared with continuously operating the motor at full speed.

The PowerFlex 755 architecture is intended for demanding industrial applications and is available across a broad range of power ratings. The 760 A Frame 9 configuration is positioned toward the high-power end of this product family.

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5. Main Product Features

5.1 High-Power Motor Control

The principal characteristic of 20G1F3E760LNDNNNNN is its high-current capability.

With a normal-duty current rating of approximately 760 A, it is designed for very large AC motors. The corresponding normal-duty rating is approximately 800 HP.

The available duty ratings also allow the drive to be applied to different types of industrial loads. The published configuration identifies approximately 900 HP / 825 A for light duty, 800 HP / 760 A for normal duty, and 700 HP / 690 A for heavy duty.

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5.2 Adjustable Motor Speed

A major advantage of a variable frequency drive is the ability to adjust motor speed according to the process requirement.

For example, a pump does not necessarily need to run at full speed continuously. A conveyor may need different speeds during different production stages. A fan may require different airflow depending on production demand.

The drive provides the electrical control necessary to vary motor operating speed without relying exclusively on mechanical transmission changes.

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5.3 Controlled Acceleration and Deceleration

Large motors can create significant mechanical stress when started or stopped abruptly.

The drive can provide controlled acceleration and deceleration profiles, allowing the motor to ramp toward its target speed rather than immediately reaching full operating speed.

This can help reduce stress on:

• Motor shafts
• Gearboxes
• Couplings
• Conveyor belts
• Pumps
• Fans
• Compressors
• Production machinery
• Mechanical transmission components

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5.4 High-Power Industrial Construction

The Frame 9 design is substantially larger than the smaller PowerFlex 755 frames.

The approximate IP20/NEMA Type 1 Frame 9 cabinet dimensions are around 2453 mm high, 1200 mm wide and 600 or 800 mm deep, with an approximate weight of 1246 kg.

Because of this size and weight, installation normally requires appropriate floor loading, lifting equipment, electrical clearances, ventilation and dedicated installation planning.

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5.5 Door-Mounted Operator Interface

The specified configuration includes a door-mounted human-machine interface.

This arrangement allows operators or maintenance personnel to access drive information without necessarily opening the main electrical cabinet.

Depending on the configured control system, the operator interface can be used for monitoring, parameter adjustment, fault diagnosis and drive status information.

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6. Product Applications

6.1 Large Pump Systems

The model is suitable for high-power pump applications where the required motor rating falls within the drive’s voltage and current range.

Examples include:

• Water-treatment pumping
• Industrial water circulation
• Cooling-water systems
• Process-water systems
• Large-scale irrigation
• Mining water systems
• Chemical process pumping
• Industrial utility systems

Variable-speed control can allow pump output to follow actual process requirements instead of keeping the motor at maximum speed continuously.

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6.2 Large Fans and Blowers

Large industrial fans and blowers often use substantial motors.

Typical applications include:

• Industrial ventilation
• Furnace air systems
• Dust collection
• Exhaust systems
• Process ventilation
• Mining ventilation
• Cement production
• Steel production
• Chemical processing

The ability to vary fan speed provides process flexibility and can help avoid unnecessary full-speed operation.

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6.3 Conveyors

High-power conveyors are another important application.

Examples include:

• Mining conveyors
• Bulk-material handling
• Aggregate handling
• Cement plants
• Ports and terminals
• Steel plants
• Warehouse material systems
• Heavy manufacturing

Controlled acceleration is particularly useful on long conveyors because starting a heavily loaded conveyor directly from the power supply can place significant stress on the mechanical transmission.

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6.4 Compressors

Large compressors require substantial motor power and can have demanding starting and operating characteristics.

A high-power AC drive can provide adjustable-speed control for certain compressor applications, allowing the compressor motor to operate according to process demand.

Applications may include:

• Industrial compressed air
• Process gas systems
• Manufacturing plants
• Chemical processing
• Utility systems
• Large refrigeration or process equipment

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6.5 Industrial Process Machinery

The PowerFlex 755 family can also be used for large production machinery.

Potential applications include:

• Extrusion machinery
• Mixers
• Crushers
• Mills
• Process lines
• Material-handling equipment
• Large machine tools
• Production equipment
• Industrial mechanical systems

The exact suitability depends on motor type, load characteristics, starting torque requirements, duty cycle and the selected control configuration.

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7. Product Advantages

7.1 High Current Capacity

The approximately 760 A normal-duty rating allows the model to control very large motors.

This makes it fundamentally different from compact VFD products designed for small and medium-sized motors.

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7.2 Suitable for Large Industrial Loads

The 800 HP normal-duty rating places the model into a range commonly associated with large industrial equipment.

This allows one drive platform to be applied to substantial machinery without requiring a collection of smaller drives.

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7.3 Flexible Speed Regulation

Variable-speed operation allows the motor to be matched more closely to the actual process requirement.

This can be particularly useful in pump and fan applications where process demand varies throughout the operating cycle.

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7.4 Reduced Mechanical Shock

Controlled acceleration and deceleration can help reduce sudden mechanical loading.

This can be valuable for equipment containing:

• Long conveyor belts
• Large fans
• Pumps
• Gearboxes
• Couplings
• Heavy rotating machinery

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7.5 Large-Scale Industrial Integration

The PowerFlex 755 architecture is intended for integration into industrial control environments.

This makes the product suitable for systems where the drive needs to interact with a larger automation architecture rather than operating as an isolated motor controller.

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7.6 Maintenance and Diagnostics

The operator interface and drive control architecture provide useful access to operating information, faults and configuration parameters.

For large industrial installations, diagnostic capability can be particularly important because unexpected downtime on an 800 HP-class motor can have a significant impact on the overall process.

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8. Installation Considerations

Because 20G1F3E760LNDNNNNN is a Frame 9 high-power drive, installation should not be treated like the installation of a small wall-mounted VFD.

The approximate cabinet dimensions are already in the range of 2.45 m in height and 1.2 m in width, while the approximate cabinet weight is around 1246 kg.

The installation area should therefore be evaluated for:

• Floor loading capacity
• Cabinet access
• Lifting access
• Electrical clearances
• Cable routing
• Cooling-air requirements
• Maintenance access
• Heat dissipation
• Incoming power configuration
• Motor cable routing
• Grounding
• Short-circuit protection
• Environmental conditions

For large-frame equipment, the installation design is often as important as the electrical rating of the drive itself.

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9. Dimensions and Weight

The following figures represent the applicable Frame 9 cabinet-level dimensions for the relevant large-frame configuration.

Physical Parameter	Approximate Value
Model	20G1F3E760LNDNNNNN
Frame	9
Height	2453 mm
Width	1200 mm
Depth	600 or 800 mm
Weight	1246 kg
Height in inches	Approx. 96.6 in
Width in inches	Approx. 47.2 in
Depth in inches	Approx. 23.6 or 31.5 in
Weight in pounds	Approx. 2748 lb
Mounting	Floor-mounted
Cooling	Forced-air
Cabinet style	MCC-style / Type 1 configuration

These figures should be treated as planning values. A complete installation containing option cabinets can be considerably larger and heavier. Published information gives approximately 2290 kg for a Frame 9 installation with drive and option cabinets in the relevant MCC-style configuration.

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10. Five Related Models from the Same PowerFlex 755 Series

The following models are closely related PowerFlex 755 catalog configurations. They are useful when selecting an alternative based on current, motor power or load-duty requirements.

Model	Series	Approx. Current / Rating	Voltage Class	Frame	Typical Configuration	Approx. Dimensions	Approx. Weight
20G1F3E690LNDNNNNN	PowerFlex 755	690 A	600 V class	Frame 9	Air-cooled packaged drive	2453 × 1200 × 600/800 mm*	1246 kg*
20G1F3E760LNDNNNNN	PowerFlex 755	760 A	600 V class	Frame 9	Air-cooled packaged drive	2453 × 1200 × 600/800 mm*	1246 kg*
20G1F3E825LNDNNNNN	PowerFlex 755	825 A	600 V class	Frame 9	Air-cooled packaged drive	2453 × 1200 × 600/800 mm*	1246 kg*
20G1F3E980LNDNNNNN	PowerFlex 755	980 A class	600 V class	Large-frame configuration	Air-cooled packaged drive	Configuration dependent	Configuration dependent
20G1F3E545LNDNNNNN	PowerFlex 755	545 A	600 V class	Large-frame configuration	Air-cooled packaged drive	Configuration dependent	Configuration dependent

*The Frame 9 cabinet figures are approximate and apply to the corresponding large-frame cabinet construction; exact physical dimensions can vary with factory-installed options.

These catalog numbers are part of the same broad PowerFlex 755 product family, which contains numerous combinations of voltage, current, frame and option configurations.

10.1 20G1F3E690LNDNNNNN

This model is a lower-current configuration compared with the 760 A model.

It can be considered where the connected motor and application have a lower current requirement. The 690 A configuration is also significant because the 690 A figure corresponds to the heavy-duty rating associated with the 760 A configuration.

This makes the model relevant when evaluating applications where the motor rating, overload requirement and duty class are different from the original 760 A selection.

10.2 20G1F3E760LNDNNNNN

This is the specified reference model.

It provides approximately 760 A normal-duty capacity and approximately 800 HP normal-duty capability at the 600 V class.

It represents a substantial high-power drive configuration for large industrial motors.

10.3 20G1F3E825LNDNNNNN

The 825 A configuration provides a higher current capacity within the same general voltage and product family.

It can be considered where the motor’s full-load current or the application’s duty requirements are above the 760 A configuration.

10.4 20G1F3E980LNDNNNNN

The 980 A configuration represents a still larger current capability within the same general PowerFlex 755 family.

This type of model is relevant to very high-power motor installations where the electrical and mechanical system has been designed for a higher current requirement.

10.5 20G1F3E545LNDNNNNN

The 545 A configuration provides a lower-current alternative.

It can be useful when the application belongs to the same general PowerFlex 755 platform but does not require the full current capacity of the 760 A model.

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11. Five Popular Models Under the Same Brand

The following models represent commonly encountered members of the same broad industrial drive portfolio. They serve different power ranges and application requirements and should not be considered direct electrical replacements for the 20G1F3E760LNDNNNNN.

Model	Product Family	Typical Voltage Class	Approx. Current / Power Range	Frame / Size	Typical Application	Approx. Dimensions	Approx. Weight
20G1F3E760LNDNNNNN	PowerFlex 755	600 V class	760 A / approx. 800 HP ND	Frame 9	Large pumps, fans, conveyors, compressors	2453 × 1200 × 600/800 mm	1246 kg
20G1F3C460LNDNNNNN	PowerFlex 755	480 V class	460 A class	Large frame	Large industrial motors	Frame-dependent	Frame-dependent
20G1F3C650LNDNNNNN	PowerFlex 755	480 V class	650 A class	Large frame	Heavy industrial equipment	Frame-dependent	Frame-dependent
20G1F3D710LNDNNNNN	PowerFlex 755	600 V class	710 A class	Large frame	Large industrial machinery	Frame-dependent	Frame-dependent
20G1F3F650LNDNNNNN	PowerFlex 755	High-voltage-class configuration	650 A class	Large frame	High-power industrial motor control	Frame-dependent	Frame-dependent

The catalog listings show a broad range of PowerFlex 755 configurations covering different current ratings and voltage arrangements.

Because the physical construction of these large-frame models depends heavily on the exact cabinet and factory options, it is preferable to use the complete catalog number when preparing an installation drawing or shipping plan rather than assuming that two models with similar current ratings have identical dimensions.

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12. Comparison of the Main Models

Comparison Item	20G1F3E690LNDNNNNN	20G1F3E760LNDNNNNN	20G1F3E825LNDNNNNN	20G1F3E980LNDNNNNN	20G1F3E545LNDNNNNN
Series	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755
Voltage class	600 V	600 V	600 V	600 V	600 V
Approx. current	690 A	760 A	825 A	980 A	545 A
Relative capacity	High	Very high	Very high	Extremely high	High
Frame class	Large	Frame 9	Frame 9	Large	Large
Cooling	Air-cooled	Air-cooled	Air-cooled	Air-cooled	Air-cooled
Intended use	Large motor	Very large motor	Very large motor	Extremely large motor	Large motor
Approx. cabinet size	Configuration dependent	2453 × 1200 × 600/800 mm	2453 × 1200 × 600/800 mm	Configuration dependent	Configuration dependent
Approx. weight	Configuration dependent	1246 kg	1246 kg	Configuration dependent	Configuration dependent

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13. Selection Guide

When selecting a replacement or alternative for 20G1F3E760LNDNNNNN, horsepower alone should not be used as the selection criterion.

The following factors should be checked.

Motor voltage

The drive voltage class must match the electrical system and the motor requirements.

Motor full-load current

This is one of the most important selection parameters.

The actual motor current should be compared with the drive’s continuous output current for the required duty class.

Duty cycle

A motor running continuously at a relatively stable load has different requirements from a machine that repeatedly accelerates heavy loads or experiences high torque.

Overload requirement

The application may require a particular overload capacity.

This is especially important for crushers, conveyors, mixers, compressors and other high-inertia or high-torque machinery.

Starting torque

The required starting torque should be evaluated before selecting a drive.

Cooling and environment

A large-frame air-cooled drive requires adequate ventilation and heat removal.

Cabinet configuration

The physical configuration should be checked carefully because the presence of disconnects, filters, input components, bypass equipment or option cabinets can substantially change the final footprint and weight.

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14. Why the 20G1F3E760LNDNNNNN Is Used for Large Industrial Systems

The key characteristic of this model is not simply its horsepower rating.

Its value comes from combining high-current motor control with a large industrial drive architecture.

For a large manufacturing plant, replacing direct-on-line motor starting with controlled variable-speed operation can change the way the motor interacts with the entire mechanical system.

For a pump, the drive can regulate flow by changing motor speed.

For a fan, the drive can regulate airflow.

For a conveyor, it can provide controlled acceleration.

For process machinery, it can provide adjustable operating speed.

For large rotating equipment, controlled acceleration and deceleration can also reduce the mechanical shock associated with starting and stopping.

This makes the PowerFlex 755 platform suitable for applications where motor control is part of the overall process-control strategy rather than simply an on/off function.

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15. Maintenance Considerations

Large-frame drives should be maintained as part of a planned industrial maintenance program.

Important inspection areas include:

• Cooling-air passages
• Cooling fans
• Electrical connections
• Power terminals
• Control wiring
• Grounding connections
• Cabinet ventilation
• Internal contamination
• Heat accumulation
• Operator interface
• Fault history
• Motor cable connections
• External disconnect equipment

Because the equipment operates at high voltage and high current, maintenance should be performed by appropriately qualified personnel using the applicable site safety procedures.

For an approximately 1246 kg Frame 9 cabinet, mechanical handling should also be planned carefully during installation and replacement.

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16. Overall Product Positioning

The 20G1F3E760LNDNNNNN can be summarized as a high-power, 600 V-class, three-phase, air-cooled PowerFlex 755 AC drive designed for large industrial motors.

Its approximately 760 A normal-duty capacity and approximately 800 HP normal-duty rating place it in the high-power segment of the family. The associated Frame 9 construction also means that the product is physically large and should normally be installed in a dedicated industrial electrical environment.

The model is particularly relevant to applications where adjustable speed, controlled acceleration, process control and high-power motor operation are required.

For purchasing, replacement or engineering purposes, the complete catalog number 20G1F3E760LNDNNNNN should be retained because small changes in the catalog-number suffix can represent meaningful changes in factory configuration or installed options.

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17. Quick Reference Table

Item	Details
Model	20G1F3E760LNDNNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product	AC variable frequency drive
Configuration	Air-cooled packaged drive
Input	600 VAC class, 3-phase
Normal-duty current	760 A
Normal-duty power	Approx. 800 HP
Light-duty rating	Approx. 900 HP / 825 A
Heavy-duty rating	Approx. 700 HP / 690 A
Frame	Frame 9
Mounting	Floor-mounted
Enclosure style	Type 1 / IP21-style configuration
Cooling	Forced-air
Operator interface	Door-mounted HIM
Approx. height	2453 mm
Approx. width	1200 mm
Approx. depth	600 or 800 mm
Approx. weight	1246 kg
Main applications	Pumps, fans, conveyors, compressors, process machinery
Main function	Adjustable-speed AC motor control
Application level	Large industrial machinery
Product family	PowerFlex 755

18. Final Summary

20G1F3E760LNDNNNNN is a high-capacity PowerFlex 755 AC drive configured for large industrial motor applications.

Its key electrical characteristics are a 600 V-class three-phase input system, approximately 760 A normal-duty output capability and approximately 800 HP normal-duty motor capacity. The model is built in a large Frame 9 configuration with forced-air cooling and a floor-mounted industrial cabinet arrangement.

Its approximate Frame 9 cabinet dimensions are 2453 mm high, 1200 mm wide and 600 or 800 mm deep, with an approximate weight of 1246 kg for the applicable MCC-style cabinet configuration. Actual system dimensions and weight can increase when additional option cabinets and accessories are included.

The product is intended for demanding industrial applications where large motors require controlled speed and torque. Typical applications include large pumps, fans, conveyors, compressors, material-handling systems and heavy process machinery.

When selecting an alternative, the most important factors are not only horsepower but also motor voltage, full-load current, duty class, overload requirement, starting torque, operating environment, cooling requirements and cabinet configuration.

For a direct replacement, the complete catalog number should be checked carefully. For a new installation, the motor nameplate current and application duty should be used together with the required voltage and control requirements to determine the appropriate drive configuration.