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Allen-Bradley 20G1ABC460JN0NNNNN PowerFlex 755 AC Drive – Detailed Product Specifications, Applications, Advantages and Related Models

The Allen-Bradley 20G1ABC460JN0NNNNN is a high-power PowerFlex 755 AC variable frequency drive designed for large three-phase industrial motor applications.

It is part of the PowerFlex 750-Series and belongs specifically to the PowerFlex 755 family. This model is an air-cooled, Frame 8 drive intended for demanding industrial installations where high motor current, controlled acceleration, variable-speed operation, advanced motor control, and industrial network integration are required.

The drive is rated for 460 A normal-duty continuous output, with a 250 kW normal-duty rating and a 200 kW heavy-duty rating. It is designed for 380–400 VAC three-phase input, uses an AC input with precharge and no DC terminals, and incorporates a filtered configuration with the CM jumper installed.

One particularly important characteristic of this model is its large mechanical size. It is a 600 mm deep MCC-style, IP20 / Type 1 configuration, with a Frame 8 construction. The approximate overall dimensions are 2102 mm high × 606 mm wide × 600 mm deep, with an approximate weight of 623 kg.

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1. Basic Product Information

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2. Product Introduction

The 20G1ABC460JN0NNNNN is a large-capacity industrial AC drive designed to provide variable-speed control for high-power three-phase motors.

Instead of operating a motor at a fixed speed, the drive regulates motor frequency and voltage so that motor speed can be adjusted according to the machine’s operating requirements.

This makes the drive particularly useful for large industrial machines where smooth starting, controlled acceleration, adjustable operating speed, controlled stopping, and process optimization are important.

The 460 A normal-duty rating makes this model suitable for large motors and heavy industrial equipment. The drive is considerably larger than conventional compact VFDs and is intended for permanent industrial installations rather than small standalone machinery.

The Frame 8 design provides the physical space necessary for high-power switching components, cooling equipment, power connections, control electronics, and associated drive hardware.

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3. Brand and Product Series

The PowerFlex 755 series is designed for applications that require considerably more control flexibility and power capacity than small general-purpose drives.

The 20G1ABC460JN0NNNNN is positioned within the large Frame 8 portion of this product family.

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4. Detailed Electrical Parameters

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5. Duty Ratings

The PowerFlex 755 uses different duty classifications because industrial motors can experience very different load profiles.

For this model, the principal ratings are:

The difference between these ratings is important.

A drive should not be selected solely by comparing the motor’s kW rating with the largest number printed in a product table.

The actual application should be evaluated according to motor current, starting torque, acceleration time, overload requirements, operating cycle, ambient temperature, motor speed, and load characteristics.

For example, a centrifugal pump and a heavily loaded conveyor may use motors of similar power but have very different drive requirements.

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6. Normal-Duty Performance

The normal-duty rating is 460 A / 250 kW.

This is the most important rating for general industrial applications using this model.

The drive can provide approximately:

• 460 A continuous normal-duty current
• 506 A for a 60-second normal-duty overload period
• 690 A for a 3-second normal-duty overload period

These overload capabilities are useful for industrial machinery that experiences temporary increases in load during acceleration or process changes.

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7. Heavy-Duty Performance

For heavy-duty operation, the drive is rated at approximately:

• 385 A continuous
• 578 A for 60 seconds
• 693 A for 3 seconds

The heavy-duty rating is lower in continuous current than the normal-duty rating because heavy-duty operation allows a greater overload capability.

This type of rating is particularly relevant for machines with high starting torque, high inertia, or significant short-duration load changes.

Typical examples include:

• Heavy conveyors
• Material-handling equipment
• Mixers
• High-inertia machinery
• Certain process machines
• Heavy mechanical production equipment

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8. Input Configuration

The 20G1ABC460JN0NNNNN uses an AC input with precharge and no DC terminals.

The precharge circuit is designed to manage the initial charging of the drive’s DC-link capacitors when the system is energized.

This is especially important for large drives because the DC bus contains substantial energy-storage components.

The absence of DC terminals is also an important configuration detail.

This model should therefore not automatically be substituted for a drive intended for a common DC-bus system or an external DC-bus architecture.

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9. Filtering and CM Jumper

The model uses a filtered configuration with the CM jumper installed.

This configuration is suitable for the intended electrical installation arrangement and helps address common-mode and electromagnetic-noise considerations.

The CM jumper configuration is important because the grounding and filtering arrangement can affect the way the drive interacts with the incoming power system.

When replacing another drive, the CM jumper position and filtering configuration should be checked carefully.

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10. Dynamic Braking

The 20G1ABC460JN0NNNNN has no dynamic braking in its standard configuration.

This is suitable for many applications where the motor does not need rapid deceleration or where the mechanical system does not generate significant regenerative energy.

Typical applications that may operate successfully without dynamic braking include:

• Centrifugal pumps
• Large fans
• Blowers
• Some continuous process equipment
• Certain conveyors with gradual stopping requirements

Applications with frequent rapid stopping or large inertial loads should be evaluated separately.

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11. Mechanical Dimensions and Weight

The physical dimensions of this model are especially important because it is a large Frame 8 drive.

The approximate dimensions are:

2102 mm × 606 mm × 600 mm (H × W × D).

The approximate weight is:

623 kg.

This makes the 20G1ABC460JN0NNNNN a substantial piece of industrial electrical equipment.

Mechanical handling should therefore be considered during transportation, cabinet installation, maintenance, and replacement.

A cabinet supporting this drive must be appropriately designed for the equipment weight.

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12. Why the 623 kg Weight Matters

The weight of approximately 623 kg is not a minor consideration.

It affects:

• Cabinet structural design
• Transportation
• Floor loading
• Lifting arrangements
• Installation equipment
• Maintenance access
• Replacement procedures
• Service planning
• Shipping arrangements
• Equipment-room layout

A replacement project should therefore not treat this model like a conventional wall-mounted VFD.

The large mass also means that the drive may require appropriate lifting equipment during installation.

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13. Cooling System

The drive uses forced-air cooling.

High-power semiconductor devices generate substantial heat during normal operation.

The internal fan system moves air through the drive to remove heat from the power section.

For this reason, the installation should provide:

• Adequate airflow
• Proper ventilation
• Sufficient clearance
• Clean air passages
• Appropriate ambient temperature
• Proper cabinet design
• Reliable fan operation

Dust, dirt, oil mist, and other contaminants should be controlled because contamination can reduce cooling efficiency and affect long-term reliability.

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14. Communication Capability

The PowerFlex 755 architecture includes embedded EtherNet/IP capability.

This allows the drive to communicate directly with an industrial automation network.

Typical information exchanged through the network can include:

• Start commands
• Stop commands
• Speed references
• Motor current
• Output frequency
• Drive status
• Fault codes
• Warning conditions
• Operating parameters
• Diagnostic information

This capability is especially useful for large production systems where multiple drives need to be controlled and monitored from a central automation platform.

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15. Motor Control

The PowerFlex 755 platform is designed to support several motor-control strategies.

Depending on the application and selected configuration, the drive can support:

• V/Hz control
• Sensorless vector control
• Flux vector control
• Encoder-based control
• Induction motor control
• Permanent-magnet motor control in supported configurations

This flexibility allows the same basic drive family to be used across many different types of industrial machines.

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16. Main Product Applications

16.1 Large Conveyor Systems

Large conveyors are an important application for the 20G1ABC460JN0NNNNN.

Conveyors often have high inertia and may carry heavy materials.

Using variable-speed control allows the motor to accelerate smoothly instead of applying full starting torque instantaneously.

Typical applications include:

• Mining conveyors
• Cement conveyors
• Aggregate conveyors
• Steel-processing conveyors
• Bulk-material systems
• Port conveyors
• Warehouse handling systems
• Production-line conveyors

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16.2 Large Pumps

Large pumps can benefit significantly from variable-speed control.

Instead of running continuously at full speed, the motor speed can be adjusted according to process demand.

Applications include:

• Water treatment
• Wastewater treatment
• Industrial water circulation
• Cooling-water systems
• Process pumps
• Chemical process systems
• Irrigation systems
• Industrial fluid transfer

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16.3 Large Fans and Blowers

Large fans and blowers are another major application.

Variable-speed operation allows airflow to be adjusted to the actual requirement.

Applications include:

• Industrial ventilation
• Furnace ventilation
• Dust collection
• Exhaust systems
• Process-air systems
• Drying equipment
• Combustion systems
• Large HVAC equipment

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16.4 Compressors

Large compressors can require high motor current and carefully controlled acceleration.

The 460 A class provides the current capacity required for many large compressor applications.

The actual motor and compressor operating characteristics should be evaluated to ensure the selected duty rating is appropriate.

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16.5 Material Handling

The drive is suitable for large material-handling systems requiring controlled speed and acceleration.

Applications include:

• Feeders
• Transfer systems
• Conveyor systems
• Bulk-material equipment
• Production transfer machines
• Large mechanical handling equipment

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16.6 Process Machinery

The drive can also be used for process machinery requiring variable-speed motor operation.

Examples include:

• Mixers
• Agitators
• Extruders
• Rollers
• Winding systems
• Processing machines
• Production machinery
• Industrial mechanical equipment

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17. Product Advantages

17.1 High Current Capacity

The 460 A normal-duty current rating allows this model to control large industrial motors.

This is one of its primary advantages compared with smaller VFDs.

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17.2 High-Power Capability

With a 250 kW normal-duty rating, the drive can be used in substantial industrial machinery.

The 200 kW heavy-duty rating provides a useful option for applications where higher overload performance is required.

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17.3 Advanced Motor Control

The PowerFlex 755 platform provides more advanced motor-control capability than basic variable-frequency drives.

This can improve:

• Speed regulation
• Torque control
• Acceleration
• Deceleration
• Process stability
• Motor performance

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17.4 Industrial Network Integration

Embedded EtherNet/IP allows the drive to become part of a larger automation system.

This reduces dependence on individual hardwired control signals and makes drive status and diagnostic information easier to integrate into the control architecture.

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17.5 Large Frame Construction

Frame 8 construction is intended for high-power industrial applications.

It provides the physical architecture required for high-current power electronics and forced-air cooling.

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17.6 EMC Filtering

The filtered configuration provides additional support for managing electrical interference.

This is particularly useful in installations with sensitive control and communication equipment.

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17.7 Flexible Duty Selection

The LD, ND, and HD classifications allow engineers to match the drive to the actual machine load.

This provides greater flexibility when selecting a drive for different types of machinery.

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17.8 Suitable for Centralized Monitoring

The network capability allows operating conditions and faults to be monitored centrally.

This can improve maintenance efficiency and reduce troubleshooting time.

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18. Five Related PowerFlex 755 Models

The following five models are closely related to the 20G1ABC460JN0NNNNN and are useful for selection and comparison.

These models are particularly useful when the motor current requirement is higher than 460 A.

The 540 A and 567 A versions provide a moderate increase in capacity, while the 650 A, 750 A, and 770 A models are intended for substantially larger motor applications.

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19. Five Same-Brand Popular Models

For broader comparison within the same brand and high-power drive range, the following models are useful reference points.

These models create a useful progression from approximately 460 A through 750 A, allowing engineers to select a larger drive without moving to an entirely different product architecture.

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20. Detailed Comparison of Related Models

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21. Mechanical Installation

The 20G1ABC460JN0NNNNN requires substantially more installation space than a conventional compact drive.

The nominal dimensions of approximately:

2102 mm height × 606 mm width × 600 mm depth

should be taken into account during cabinet design.

The approximate weight of:

623 kg

also requires appropriate mechanical support.

Important installation considerations include:

• Floor loading
• Cabinet structural strength
• Lifting equipment
• Service clearance
• Cable access
• Cooling airflow
• Ventilation
• Grounding
• Power-cable routing
• Control-cable separation

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22. Cabinet Design Considerations

The drive is designed for an MCC-style installation.

The cabinet should provide adequate room for:

• Incoming power connections
• Motor output cables
• Control wiring
• Network connections
• Ventilation
• Cooling airflow
• Service access
• Protective equipment
• Grounding connections

Because the equipment is approximately 2.1 m high, cabinet height and room clearance should be evaluated before installation.

The 623 kg equipment weight also means that the cabinet base and floor structure should be capable of supporting the drive safely.

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23. Thermal Management

Thermal design is especially important with this model.

The drive has significant internal power losses, and the forced-air cooling system must remove this heat continuously.

The published power-loss figure for this class of drive is approximately 5.9 kW, which means cabinet thermal calculations should not ignore the heat contribution of the drive.

If several drives or other high-power electrical components are installed in the same room or cabinet, their combined heat generation should be considered.

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24. Energy and Process Advantages

Variable-speed drives can provide significant process benefits when applied to suitable loads.

For variable-torque equipment such as pumps and fans, reducing motor speed can reduce power consumption substantially.

For conveyor systems, controlled acceleration can reduce mechanical shock.

For process equipment, variable-speed operation can provide more precise control of production conditions.

For large industrial motors, the ability to control speed electronically can also reduce dependence on mechanical throttling or other inefficient control methods.

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25. Maintenance Advantages

The networked architecture of the PowerFlex 755 platform can make maintenance easier.

Operating information can be monitored through the control system.

Maintenance personnel can review:

• Drive status
• Motor current
• Output frequency
• Fault conditions
• Warning conditions
• Operating parameters
• Diagnostic information

This can reduce the time required to identify problems.

Predictive diagnostic functions can also help maintenance teams identify abnormal operating conditions before they become serious failures.

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26. Typical Industries

The 20G1ABC460JN0NNNNN can be considered for a broad range of industries.

Mining

Suitable for conveyors, pumps, ventilation systems, and material-handling equipment.

Cement

Suitable for fans, conveyors, pumps, crushers, and processing machinery.

Steel

Suitable for large rollers, conveyors, fans, pumps, and process equipment.

Water Treatment

Suitable for high-capacity pumps, blowers, and water-circulation equipment.

Chemical Processing

Suitable for pumps, compressors, mixers, agitators, and process machinery.

Manufacturing

Suitable for large production lines, conveyors, material-handling equipment, and process machines.

Energy and Utilities

Suitable for large pumps, fans, blowers, and auxiliary motor systems.

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27. Application Selection Guide

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28. Main Product Advantages at a Glance

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29. Important Selection Considerations

Before using the 20G1ABC460JN0NNNNN in a new installation or as a replacement, several factors should be checked.

Motor Current

The motor’s full-load current should be compared against the appropriate drive duty rating.

Motor Power

Motor kW should be evaluated together with current and duty rather than used as the only selection criterion.

Load Type

A pump, fan, conveyor, compressor, mixer, and crusher can have very different torque requirements.

Starting Requirement

High-inertia machines may require additional acceleration capability.

Braking

Because this model has no dynamic braking configuration, applications requiring rapid deceleration should be evaluated separately.

Input System

The existing electrical system must be compatible with the 380–400 VAC three-phase input configuration.

Cabinet Space

The approximately 2102 × 606 × 600 mm physical envelope must be accommodated.

Equipment Weight

The approximately 623 kg mass must be considered for transportation, lifting, and cabinet support.

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30. Final Technical Specification Table

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31. Overall Product Assessment

The Allen-Bradley 20G1ABC460JN0NNNNN is a high-capacity industrial variable frequency drive designed for large motor applications where both power capability and control flexibility are important.

Its 460 A normal-duty current rating, 250 kW normal-duty capacity, 200 kW heavy-duty capacity, and 315 kW light-duty class provide a broad operating range for different industrial loads.

The PowerFlex 755 architecture makes the drive particularly suitable for applications requiring more than basic speed control.

Its embedded EtherNet/IP capability supports integration into larger industrial automation systems, while its advanced motor-control functions provide flexibility for applications involving variable speed, torque management, acceleration, and process control.

The mechanical construction is equally important.

At approximately 2102 mm high, 606 mm wide, and 600 mm deep, with an approximate weight of 623 kg, this is a substantial industrial drive rather than a compact VFD.

The large Frame 8 design is appropriate for high-power applications, but it also means that installation, transportation, cabinet support, ventilation, and maintenance access must be planned carefully.

The AC input with precharge, no DC terminals, filtered configuration, and CM jumper installed define an important part of the electrical configuration and should be considered when selecting a replacement or designing a new system.

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32. Recommended Related Models

For applications close to the 460 A range, the following models are useful alternatives:

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33. Conclusion

The Allen-Bradley 20G1ABC460JN0NNNNN PowerFlex 755 AC Drive is a high-power, air-cooled industrial VFD designed for large three-phase motor applications.

Its principal specifications include 460 A normal-duty output current, 250 kW normal-duty power, 385 A heavy-duty current, 200 kW heavy-duty power, 380–400 VAC three-phase input, Frame 8 construction, IP20 / Type 1 protection, 600 mm MCC-style installation, embedded EtherNet/IP, EMC filtering, AC input with precharge, and no dynamic braking.

The physical size is approximately 2102 mm × 606 mm × 600 mm, and the approximate equipment weight is 623 kg.

The drive is particularly well suited to large pumps, fans, blowers, conveyors, compressors, material-handling systems, mixers, process machinery, and other high-power industrial equipment.

Its strongest advantages are its high current capacity, flexible duty ratings, advanced motor-control capability, industrial network integration, large-frame construction, forced-air cooling, and suitability for demanding automated production environments.

For applications that require a higher current rating while retaining the same general PowerFlex 755 architecture, the 20G1ABC540JN0NNNNN, 20G1ABC567JN0NNNNN, 20G1ABC650JN0NNNNN, and 20G1ABC750JN0NNNNN provide a logical progression toward larger motor applications.