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Allen-Bradley 20G1AJE460AN4NNNNN PowerFlex 755 AC Drive

1. Product Introduction

The Allen-Bradley 20G1AJE460AN4NNNNN is a high-power PowerFlex 755 AC Drive designed for demanding industrial motor-control applications.

It is a 600 VAC, three-phase, 460 A, Frame 8 air-cooled drive intended for large industrial motors and high-power machinery.

The drive provides three principal motor-duty classifications:

• 500 HP Light Duty
• 500 HP Normal Duty
• 400 HP Heavy Duty

The catalog configuration uses an 800 mm deep MCC-style enclosure, IP54 / NEMA Type 12 protection, forced-air cooling, embedded EtherNet/IP communication, AC input with precharge, no external DC terminals, filtering, and the AN4 human-interface configuration.

The 20G1AJE460AN4NNNNN is particularly suitable for large pumps, fans, blowers, compressors, conveyors, mining equipment, material-handling systems, process machinery, cement equipment, and other industrial applications requiring controlled operation of large AC motors.

This model belongs to the PowerFlex 755 family, which is intended for architecture-class industrial drive applications where the drive must do considerably more than basic speed control.

The requested AN4 catalog number is a discontinued configuration. The identified direct replacement is 20G1AJE460JN4NNNNN. For existing installations, the AN4 model remains relevant for equipment identification, maintenance, retrofit planning, and spare-parts management.

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2. Brand and Series

Item	Specification
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Product Type	Industrial AC Variable Frequency Drive
Catalog Number	20G1AJE460AN4NNNNN
Drive Class	Architecture-class AC drive
Configuration	Air-cooled AC drive
Frame	Frame 8
Voltage Class	600 VAC
Phase	Three-phase
Current Class	460 A
Light-Duty Rating	500 HP
Normal-Duty Rating	500 HP
Heavy-Duty Rating	400 HP
Enclosure	IP54 / NEMA Type 12
Construction	800 mm Deep MCC Style
Cooling	Forced Air
Network	Embedded EtherNet/IP
Input	AC Input with Precharge
DC Terminals	None
Filtering	Filtered
CM Capacitor Configuration	CM jumper removed
Dynamic Braking	None
HIM Configuration	Enhanced LCD / Full Numeric / IP66 NEMA Type 4X/12 HIM
Product Status	Discontinued
Direct Replacement	20G1AJE460JN4NNNNN

The AN4 suffix is particularly relevant because this configuration includes a more advanced operator-interface arrangement than the blank/no-HIM configuration used by some related catalog numbers.

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3. Detailed Product Parameters

Parameter	Specification
Product Name	PowerFlex 755 AC Drive
Catalog Number	20G1AJE460AN4NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Family	PowerFlex
Drive Type	AC Variable Frequency Drive
Voltage	600 VAC
Input Phase	3 Phase
Rated Current Class	460 A
Light-Duty Horsepower	500 HP
Normal-Duty Horsepower	500 HP
Heavy-Duty Horsepower	400 HP
Light-Duty Continuous Current	510 A
Light-Duty 1-Minute Current	561 A
Normal-Duty Continuous Current	460 A
Normal-Duty 1-Minute Current	506 A
Normal-Duty 3-Second Current	711 A
Heavy-Duty Continuous Current	395 A
Heavy-Duty 1-Minute Current	593 A
Heavy-Duty 3-Second Current	711 A
Frame Size	Frame 8
Cooling	Forced Air
Enclosure	Type 12
IP Rating	IP54
Construction	MCC Style
Cabinet Depth	800 mm
Overall Height	Configuration-dependent
Overall Width	Configuration-dependent
Weight	Approximately 79.38 kg reference drive-unit weight
Weight Unit	kg
Input Configuration	AC Input with Precharge
DC Bus Terminals	No external DC terminals
Filtering	Filtered
CM Jumper	Removed in AN4 configuration
Dynamic Braking	None
Communication	Embedded EtherNet/IP
Operator Interface	Enhanced LCD / Full Numeric HIM
HIM Protection	IP66 / NEMA Type 4X/12
Duty Modes	Light Duty / Normal Duty / Heavy Duty
Application Class	High-power industrial motor control
Product Status	Discontinued
Replacement	20G1AJE460JN4NNNNN

The current and horsepower figures should be interpreted according to the selected duty classification.

The 460 A value represents the normal-duty current class. The drive can provide a higher continuous current under light-duty operation, while the heavy-duty classification uses a lower continuous current rating to provide additional overload capability for demanding loads.

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4. Electrical Rating and Duty Information

The 20G1AJE460AN4NNNNN is a flexible high-power drive because its capacity can be considered according to three different duty classifications.

Duty	Continuous Current	1-Minute Current	3-Second Current	Horsepower
Light Duty	510 A	561 A	—	500 HP
Normal Duty	460 A	506 A	711 A	500 HP
Heavy Duty	395 A	593 A	711 A	400 HP

Light Duty

The light-duty rating is intended for applications where the motor generally operates with relatively stable loading and where severe overload demand is not frequent.

Under this classification, the drive provides a 510 A continuous rating and is associated with a 500 HP motor rating.

Typical applications include large fans, pumps, and other variable-torque machinery.

Normal Duty

Normal Duty provides a 460 A continuous rating and a 500 HP motor rating.

This is a useful operating class for many industrial process applications where the motor load can vary but does not require the same overload characteristics as a severe heavy-duty application.

Heavy Duty

Heavy Duty is intended for more demanding mechanical loads.

The continuous rating decreases to 395 A, but the drive provides substantially greater overload capability.

This makes the heavy-duty classification more appropriate for applications involving high starting torque, repeated acceleration, high-inertia loads, or significant short-duration overload requirements.

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5. 600 VAC Three-Phase Design

The drive is designed for 600 VAC three-phase systems.

This voltage class is particularly useful in large industrial installations because higher motor voltage can reduce current for a given motor power level compared with lower-voltage motor systems.

The drive is therefore well suited to large industrial motors where power levels can reach hundreds of horsepower.

The 600 VAC configuration should not be confused with related PowerFlex 755 models using different voltage classes.

Catalog-number differences within the PowerFlex 755 family can represent major changes in electrical characteristics.

For this reason, the complete catalog number should always be checked when selecting a replacement.

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6. Frame 8 Architecture

The 20G1AJE460AN4NNNNN is a Frame 8 drive.

Frame 8 is designed for high-power applications and is substantially larger than small and medium PowerFlex drive frames.

The frame size affects:

• Mechanical installation
• Cabinet depth
• Cable routing
• Cooling
• Service access
• Lifting and handling
• Maintenance procedures
• Electrical clearances
• Cabinet ventilation

The 800 mm deep MCC-style construction is an important part of the installation design.

The drive should be installed with sufficient space for power-cable connection, airflow, maintenance, inspection, and safe service access.

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7. IP54 / NEMA Type 12 Enclosure

The 20G1AJE460AN4NNNNN uses an IP54 / NEMA Type 12 enclosure configuration.

This enclosure provides substantially more protection than an open-type drive.

It is suitable for many indoor industrial environments where the equipment may be exposed to:

• Dust
• Dirt
• Airborne industrial contaminants
• Moisture from normal industrial operation
• Production-floor contamination
• Electrical-room environmental conditions

The enclosure is not intended to be treated as a fully waterproof washdown enclosure.

Where direct water spray, outdoor exposure, corrosive chemicals, or severe contamination are present, the complete installation environment should be evaluated separately.

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8. 800 mm Deep MCC-Style Construction

The catalog configuration is described as an 800 mm deep MCC-style drive.

This construction is particularly useful for industrial electrical systems where the drive is integrated into a larger motor-control-center-style installation.

The 800 mm depth provides the physical space required for high-power components, bus structures, power connections, cooling equipment, and service access.

The exact overall height and width should be taken from the applicable mechanical drawing for the specific configuration.

It would not be good engineering practice to assume a universal height and width simply from the catalog number because packaged and MCC-style configurations can have different mechanical arrangements.

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9. Dimensions and Weight

Mechanical information is especially important for a Frame 8 high-power drive.

Mechanical Item	Specification
Catalog Number	20G1AJE460AN4NNNNN
Frame	Frame 8
Enclosure	NEMA Type 12 / IP54
Construction	MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Reference Drive Weight	Approximately 79.38 kg
Weight	79.38 kg
Complete Packaged Assembly Weight	May be higher depending on enclosure/package configuration
Cooling Arrangement	Forced Air
Installation	Vertical industrial cabinet installation
Service Access	Required
Cable Access	Must follow applicable mechanical layout

The 79.38 kg figure should be treated as a reference drive-unit weight rather than automatically assuming that it represents the shipping weight of the entire packaged MCC assembly.

For structural calculations, transportation, lifting, cabinet installation, and shipping documentation, the actual assembled equipment weight should be confirmed from the final mechanical configuration.

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10. Forced-Air Cooling

The drive uses forced-air cooling.

At this power level, thermal management is an important part of system reliability.

The power section produces heat during normal operation, particularly when the motor is heavily loaded or operating continuously at high current.

The forced-air system removes heat from the drive enclosure and power components.

Installation should therefore provide adequate ventilation and should prevent hot exhaust air from being recirculated into the drive intake.

Routine maintenance should include inspection of:

• Cooling fans
• Air passages
• Cabinet ventilation
• Dust accumulation
• Abnormal fan noise
• Signs of overheating

A high-power drive operating in a dusty environment should receive particular attention to cooling-system cleanliness.

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11. Embedded EtherNet/IP

The 20G1AJE460AN4NNNNN includes embedded EtherNet/IP.

This is a major advantage for industrial automation systems.

Instead of treating the drive as an isolated motor controller, EtherNet/IP allows the drive to become part of a larger control system.

Typical information exchanged through the network can include:

• Start and stop commands
• Speed references
• Drive status
• Fault status
• Alarm information
• Motor operating information
• Parameter information
• Diagnostic data
• Process commands

This makes the drive well suited to PLC-controlled production systems.

Large motors can therefore be controlled from a centralized automation system while drive status and diagnostics can be made available to operators and maintenance personnel.

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12. Enhanced LCD / Full Numeric HIM

One of the key differences between the AN4 and AN0 configurations is the operator-interface arrangement.

The AN4 version is associated with an Enhanced LCD, Full Numeric HIM configuration with IP66 / NEMA Type 4X/12 protection.

This provides a more complete local operator interface than a blank/no-HIM configuration.

A local HIM can be useful during:

• Commissioning
• Parameter setup
• Troubleshooting
• Maintenance
• Local status checking
• Fault investigation
• Drive diagnostics

For a large industrial drive, having a local interface can significantly simplify commissioning and service work.

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13. AC Input with Precharge

The drive uses an AC input with precharge.

The precharge circuit controls the initial charging of the internal DC-link capacitors.

This is particularly important in high-power drive systems because the internal DC bus contains substantial stored electrical energy.

The precharge arrangement helps manage the initial energization process.

The catalog configuration does not provide external DC terminals.

This means the drive should not automatically be treated as a common-DC-bus configuration.

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14. Filtering

The 20G1AJE460AN4NNNNN is configured as a filtered drive.

Filtering is important in industrial drive systems because variable-frequency drives generate switching-related electrical noise.

A suitable filtering configuration can help improve system electromagnetic compatibility when combined with proper installation practices.

Overall EMC performance also depends on:

• Motor cable construction
• Cable length
• Shielding
• Grounding
• Bonding
• Cabinet construction
• Control wiring
• Installation layout
• Motor grounding

The filter should therefore be regarded as one part of the overall EMC design rather than a complete substitute for correct installation practices.

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15. CM Jumper Configuration

The AN4 catalog configuration specifies the corresponding common-mode capacitor jumper arrangement.

This is relevant to the grounding architecture of the drive.

The CM configuration should be selected according to the electrical distribution system and grounding arrangement.

It should not be changed simply because another PowerFlex 755 catalog number uses a different configuration.

When replacing an installed unit, the existing power-system grounding arrangement should be checked carefully before changing this configuration.

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16. Dynamic Braking

The catalog configuration specifies no dynamic braking.

This is an important consideration for applications involving high-inertia loads.

When a motor is rapidly decelerated, the mechanical energy stored in the rotating load can return to the drive’s DC bus.

If the application requires frequent or rapid deceleration, the braking requirements should be evaluated.

Applications that may require special attention include:

• High-inertia conveyors
• Centrifuges
• Hoists
• Cranes
• Unwinders
• Winders
• Large rotating machinery
• High-speed fans with rapid stopping
• Material-handling equipment

The absence of integrated dynamic braking in this catalog configuration does not prevent the drive from being used in these applications, but the complete braking strategy must be engineered appropriately.

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17. Main Product Applications

17.1 Large Industrial Pumps

Large pumps are one of the strongest application areas for the 20G1AJE460AN4NNNNN.

Variable-speed control allows the motor to operate according to process demand instead of running continuously at a fixed speed.

Applications include:

• Water circulation
• Industrial water systems
• Cooling-water systems
• Process pumping
• Wastewater systems
• Mining slurry systems
• Chemical process pumping
• Large irrigation systems

The drive can provide controlled acceleration and speed adjustment while allowing the automation system to monitor operating status.

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18. Large Fans and Blowers

Large fans can consume substantial amounts of power, especially when operating continuously.

The drive can adjust fan speed according to process requirements.

Potential applications include:

• Furnace fans
• Industrial exhaust fans
• Dust collection systems
• Combustion-air fans
• Cooling systems
• Ventilation systems
• Process blowers

The variable-speed approach can also reduce mechanical stress compared with repeatedly starting and stopping a large motor across the line.

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19. Compressors

Large compressors often require substantial motor power and careful control during starting and acceleration.

The 20G1AJE460AN4NNNNN provides a high-current platform for large compressor motors.

Possible applications include:

• Industrial air compressors
• Process compressors
• Gas-handling systems
• Refrigeration-related machinery
• Production plant compressor systems

The exact suitability depends on compressor characteristics, motor current, acceleration requirements, and process control strategy.

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20. Conveyor Systems

Large conveyor systems frequently use high-power motors.

The drive can provide controlled acceleration and deceleration, reducing sudden mechanical loading on:

• Belts
• Gearboxes
• Couplings
• Shafts
• Bearings
• Chains
• Conveyor structures

For large material-handling systems, coordinated network control can also be useful when multiple conveyors must operate together.

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21. Mining Applications

The high-current characteristics of the drive make it suitable for many mining-related applications.

Typical examples include:

• Large conveyors
• Crushers
• Feeders
• Pumps
• Ventilation systems
• Material-handling equipment
• Processing machinery

Mining environments can be demanding, so enclosure protection, cooling, cable routing, grounding, and maintenance requirements must be evaluated carefully.

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22. Cement and Aggregate Processing

Cement and aggregate facilities frequently use large motors for continuous production equipment.

The drive can be applied to:

• Crushers
• Fans
• Conveyors
• Feeders
• Process pumps
• Mixers
• Material-processing equipment

The high-power rating is particularly useful when the motor operates continuously and requires controlled acceleration or variable-speed process control.

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23. Mixers and Agitators

Large industrial mixers and agitators may require significant starting torque.

The PowerFlex 755 platform is suitable for applications where motor speed needs to be controlled according to the process.

Examples include:

• Chemical mixing
• Material blending
• Industrial slurry mixing
• Processing tanks
• Large production mixers

For these applications, the heavy-duty current rating should be evaluated against the actual motor nameplate current and torque requirements.

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24. Material-Handling Systems

Large material-handling systems benefit from controlled motor acceleration and deceleration.

The drive can be used in:

• Conveyor systems
• Bulk material systems
• Industrial feeders
• Transfer equipment
• Production-line handling
• Mining material transport
• Warehouse and industrial material systems

The integrated EtherNet/IP capability can also support centralized control and monitoring.

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25. Process Machinery

The drive is suitable for large process machines requiring adjustable motor speed.

Potential applications include:

• Industrial processing equipment
• Large mixers
• Pumps
• Fans
• Blowers
• Production machinery
• Material-processing equipment
• Continuous-process machinery

The PowerFlex 755 platform is particularly useful where the drive needs to exchange operating information with the plant control system.

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26. Main Product Advantages

High Power Capacity

The 20G1AJE460AN4NNNNN provides a 500 HP light-duty and normal-duty rating.

This places it firmly in the high-power industrial-drive category.

It is intended for large motors rather than general-purpose small machinery.

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High Current Capability

The 460 A normal-duty rating provides substantial current capacity.

The drive also provides higher light-duty current capability and substantial overload capability under the heavy-duty classification.

This makes it flexible for different mechanical load profiles.

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600 VAC Architecture

The 600 VAC class makes the drive appropriate for large industrial motor systems.

Higher motor voltage can be advantageous for high-power equipment because it can reduce motor current compared with equivalent lower-voltage power systems.

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PowerFlex 755 Platform

The PowerFlex 755 platform provides an extensive industrial motor-control architecture.

This makes the drive suitable for integrated automation systems rather than simple standalone speed control.

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Embedded EtherNet/IP

Integrated EtherNet/IP provides convenient connection to networked automation systems.

This can simplify drive control, diagnostics, and status monitoring.

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IP54 / NEMA Type 12 Protection

The enclosure provides useful protection for indoor industrial installations.

It is particularly valuable where an open drive would require additional cabinet protection.

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Enhanced Local Operator Interface

The AN4 configuration provides an enhanced LCD/full-numeric HIM.

This can be useful during commissioning and maintenance because technicians can interact with the drive locally.

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Forced-Air Cooling

The forced-air system supports thermal management for the high-power drive.

Proper airflow and maintenance are essential to long-term reliability.

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Flexible Duty Ratings

The Light Duty, Normal Duty, and Heavy Duty ratings allow engineers to evaluate the drive against different load profiles.

This is particularly useful when selecting a drive for equipment with high starting torque or intermittent overloads.

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27. Recommended Five Same-Series / Related Models

The following models are useful comparison choices within the PowerFlex 755 family and the same general 600 VAC high-power range.

Model	Voltage	Current	LD Rating	ND Rating	HD Rating	Frame	Enclosure
20G1AJE355AN4NNNNN	600 VAC, 3PH	355 A	400 HP	350 HP	300 HP	8	IP54 / Type 12
20G1AJE395AN4NNNNN	600 VAC, 3PH	395 A	450 HP	400 HP	350 HP	8	IP54 / Type 12
20G1AJE435AN4NNNNN	600 VAC, 3PH	435 A	500 HP	450 HP	350 HP	8	IP54 / Type 12
20G1AJE460JN4NNNNN	600 VAC, 3PH	460 A	500 HP	500 HP	400 HP	8	IP54 / Type 12
20G1AJE510AN4NNNNN	600 VAC, 3PH	510 A	550 HP	500 HP	450 HP	8	IP54 / Type 12

These models provide a practical progression around the 460 A model.

The 20G1AJE460JN4NNNNN is the most important comparison because it is the direct replacement configuration for the requested AN4 model.

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28. Same-Series Model Comparison

Model	Current	Light Duty	Normal Duty	Heavy Duty	Relative Position
20G1AJE355AN4NNNNN	355 A	400 HP	350 HP	300 HP	Lower capacity
20G1AJE395AN4NNNNN	395 A	450 HP	400 HP	350 HP	Lower-mid capacity
20G1AJE435AN4NNNNN	435 A	500 HP	450 HP	350 HP	Near-equivalent
20G1AJE460AN4NNNNN	460 A	500 HP	500 HP	400 HP	Requested model
20G1AJE510AN4NNNNN	510 A	550 HP	500 HP	450 HP	Higher capacity

The progression illustrates why current rating is more useful than horsepower alone when selecting a high-power drive.

For example, two drives may both carry a 500 HP light-duty designation while having different current capabilities and different heavy-duty performance.

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29. Direct Replacement

The direct replacement for the requested catalog number is:

20G1AJE460JN4NNNNN

The replacement retains the essential high-power characteristics:

Parameter	AN4 Model	JN4 Replacement
Catalog Number	20G1AJE460AN4NNNNN	20G1AJE460JN4NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	600 VAC	600 VAC
Phase	3 Phase	3 Phase
Current	460 A	460 A
Light Duty	500 HP	500 HP
Normal Duty	500 HP	500 HP
Heavy Duty	400 HP	400 HP
Frame	8	8
Enclosure	IP54 / Type 12	IP54 / Type 12
Depth	800 mm	800 mm
Cooling	Forced Air	Forced Air
EtherNet/IP	Embedded	Embedded
Input	AC with Precharge	AC with Precharge
DC Terminals	None	None
Filtering	Filtered	Filtered
HIM	Enhanced LCD / Full Numeric	Enhanced LCD / Full Numeric
Lifecycle	Discontinued	Active

The key point is that the J-version should be treated as the replacement catalog configuration, rather than simply purchasing an older AN4 unit for a new installation.

Existing equipment should still be checked for firmware, parameters, physical installation, grounding configuration, network settings, and application-specific requirements before substitution.

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30. Five Same-Brand Popular Models

The following five models provide useful comparison points across the broader Allen-Bradley drive range.

Model	Series	Voltage Class	Current / Power Class	Typical Application
25B-D030N114	PowerFlex 525	480 VAC class	30 A class	General-purpose machine control
25C-D030N114	PowerFlex 527	480 VAC class	30 A class	Networked machine automation
20G1AGC260JN0NNNNN	PowerFlex 755	480 VAC class	260 A class	Large industrial motor control
20G1AGC302JA0NNNNN	PowerFlex 755	480 VAC class	302 A class	High-power industrial equipment
20G1AGE053JA0NNNNN	PowerFlex 755	690 VAC class	53 A class	Higher-voltage industrial applications

These models should not be regarded as direct substitutes for the 20G1AJE460AN4NNNNN.

They are useful reference models when selecting a drive for a different motor size, voltage system, or machine architecture.

For a direct replacement of the requested 460 A, 600 VAC configuration, the 20G1AJE460JN4NNNNN is the much more relevant comparison.

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31. Application Selection Guide

Application	Recommended Duty Consideration	Main Reason
Large centrifugal pump	Light / Normal Duty	Variable-speed process control
Large fan	Light Duty	Variable torque
Large blower	Light / Normal Duty	Airflow control
Compressor	Normal / Heavy Duty	Higher mechanical loading
Conveyor	Normal / Heavy Duty	Acceleration and torque
Crusher	Heavy Duty	High torque and overload
Mining conveyor	Normal / Heavy Duty	High-power material handling
Cement machinery	Normal / Heavy Duty	Continuous industrial loading
Large mixer	Heavy Duty	Starting torque
Process pump	Normal Duty	Continuous process control
Hoist	Heavy Duty	High torque and braking considerations
Centrifuge	Heavy Duty	High inertia and acceleration/deceleration
Material handling	Normal / Heavy Duty	Controlled acceleration
Large industrial fan	Light Duty	Variable-speed operation

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32. Installation Considerations

The 20G1AJE460AN4NNNNN is a high-power industrial drive and should be installed as part of a properly engineered electrical system.

Important installation factors include:

• Correct incoming voltage
• Proper upstream protection
• Appropriate grounding
• Correct motor cable selection
• Motor cable routing
• Control cable separation
• Adequate ventilation
• Correct cabinet clearances
• Proper network wiring
• Suitable environmental conditions
• Correct CM capacitor configuration
• Correct motor parameters
• Correct acceleration and deceleration settings
• Correct overload settings

The 800 mm depth should be considered during cabinet design.

The complete mechanical drawing should be used for exact dimensions, mounting arrangements, cable-entry locations, service clearance, and lifting requirements.

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33. Motor Selection

The motor should be selected based on actual electrical and mechanical requirements.

Important parameters include:

• Motor rated voltage
• Motor rated current
• Motor horsepower
• Motor frequency
• Motor speed
• Motor torque
• Motor service factor
• Starting torque
• Continuous torque
• Load inertia
• Acceleration time
• Deceleration time
• Duty cycle

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

Horsepower alone should not be used as the only selection criterion.

This is particularly important for heavy-duty applications.

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34. Maintenance Advantages

The enhanced HIM configuration provides a practical advantage during maintenance.

Technicians can use the local interface for:

• Parameter inspection
• Fault identification
• Drive status
• Operating-value monitoring
• Commissioning
• Troubleshooting
• Local adjustments

The embedded network can also provide additional information to the plant control system.

A combination of local and network-based diagnostics can make troubleshooting considerably easier in large installations.

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35. Retrofit Value

Although the 20G1AJE460AN4NNNNN is discontinued, it remains an important catalog number for existing installations.

Industrial facilities often keep large drive systems in service for many years.

In these environments, the original catalog number may still appear on:

• Electrical drawings
• Spare-parts lists
• Maintenance records
• Equipment tags
• PLC configurations
• Panel documentation
• Procurement records

Knowing the exact catalog number is therefore essential when planning replacement work.

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36. Important Difference Between AN4 and Other Configurations

The final catalog characters should not be ignored.

For example, a similar 460 A PowerFlex 755 model may have:

• Different HIM configuration
• Different CM jumper configuration
• Different filtering
• Different voltage class
• Different enclosure
• Different braking configuration
• Different input arrangement

The AN4 configuration is therefore not interchangeable with every other 460 A PowerFlex 755 catalog number.

This is especially important when replacing a drive in an existing MCC.

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37. Overall Product Advantages

Advantage	Practical Benefit
460 A Class	Suitable for large motors
500 HP LD	High-power variable-torque applications
500 HP ND	Strong normal-duty capacity
400 HP HD	Useful for demanding torque applications
600 VAC	High-voltage industrial motor systems
Frame 8	Large industrial motor capacity
IP54 / Type 12	Enhanced enclosure protection
800 mm MCC Style	Suitable for industrial cabinet integration
Forced Air	High-power thermal management
Embedded EtherNet/IP	Networked automation
Enhanced LCD HIM	Convenient local commissioning and diagnostics
Filtered	Supports EMC-conscious installations
AC Precharge	Controlled input energization
No External DC Terminals	Defined AC-input architecture
PowerFlex 755	Architecture-class industrial control
Multi-Duty Ratings	Flexible application selection

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38. Final Technical Assessment

The Allen-Bradley 20G1AJE460AN4NNNNN is a high-power PowerFlex 755 AC drive intended for large industrial motor applications.

Its combination of 600 VAC three-phase operation, 460 A current class, 500 HP light-duty capability, 500 HP normal-duty capability, 400 HP heavy-duty capability, Frame 8 construction, forced-air cooling, IP54 / NEMA Type 12 protection, 800 mm deep MCC-style construction, embedded EtherNet/IP, AC input with precharge, filtered configuration, and enhanced local operator interface makes it suitable for demanding industrial installations.

The model is especially appropriate for large pumps, fans, blowers, compressors, conveyors, mining machinery, cement and aggregate equipment, material-handling systems, process machinery, and other high-power applications.

The enhanced HIM configuration is one of the practical advantages of the AN4 version.

Compared with configurations that are supplied without a HIM, the enhanced LCD/full-numeric interface provides a more convenient local method for commissioning, diagnostics, parameter inspection, and maintenance.

The model is now a discontinued catalog configuration, so its greatest current relevance is in existing installations and retrofit applications.

For new equipment, the direct replacement 20G1AJE460JN4NNNNN should be considered.

For replacement projects, however, the complete application should be reviewed before installation.

The motor current, duty classification, voltage, braking requirements, grounding arrangement, CM configuration, network requirements, enclosure requirements, physical dimensions, and HIM requirements should all be checked.

From an engineering standpoint, the 20G1AJE460AN4NNNNN can be regarded as a large-frame, high-current, 600 VAC PowerFlex 755 industrial AC drive designed for large motors and demanding automation systems.

Its strongest application value comes from situations where high motor power, controlled acceleration, variable-speed operation, industrial enclosure protection, local operator access, and networked automation need to be combined in one drive platform.