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Allen-Bradley 20G1AJE395AN4NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1AJE395AN4NNNNN is a large-frame, air-cooled industrial AC drive belonging to the PowerFlex 755 series.

It is designed for large motor applications where high current capacity, reliable variable-speed control, industrial enclosure protection, and integration with an automation system are required.

This configuration is intended for 600 VAC three-phase power systems and belongs to the high-power Frame 8 range of the PowerFlex 755 platform.

The drive provides a 395 A light-duty current rating, approximately 355 A normal-duty current, and approximately 295 A heavy-duty current.

Depending on the load-duty classification, the drive can be applied to motors in approximately the 450 HP light-duty, 400 HP normal-duty, and 350 HP heavy-duty ranges.

The product uses an air-cooled construction, IP54 / NEMA Type 12 enclosure, and an 800 mm deep MCC-style package.

One of the defining characteristics of the AN4 configuration is the Enhanced LCD Full Numeric HIM.

This gives maintenance and commissioning personnel a local operator interface for drive setup, parameter adjustment, monitoring, and troubleshooting.

The configuration also includes integrated filtering, CM jumper removed, AC input with precharge, and no DC input terminals.

The drive has no internal dynamic-braking transistor in this configuration.

For automation applications, the PowerFlex 755 platform provides embedded EtherNet/IP communication capability, allowing the drive to be integrated into a larger industrial control architecture.

The combination of high current, high motor-power capability, industrial enclosure protection, local operator interface, and network integration makes this model particularly suitable for large pumps, fans, blowers, conveyors, compressors, material-handling systems, water-treatment equipment, mining machinery, cement equipment, and other large process machines.

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2. Brand and Series Information

Item	Specification
Brand	Allen-Bradley
Product Family	PowerFlex
Series	PowerFlex 755
Product Type	Air-Cooled AC Drive
Product Category	Industrial Variable Frequency Drive
Catalog Number	20G1AJE395AN4NNNNN
Voltage Class	600 VAC
Phase	Three Phase
Frame	Frame 8
Cooling	Forced-Air / Air Cooled
Enclosure	NEMA Type 12
Protection	IP54
Package	800 mm Deep MCC Style
HIM Configuration	Enhanced LCD Full Numeric
Communication	Embedded EtherNet/IP
Input Configuration	AC Input with Precharge
DC Input Terminals	None
Filtering	Filtered
CM Jumper	Removed
Dynamic Braking	None
Internal Braking Transistor	None

The PowerFlex 755 series is intended for larger and more demanding industrial motor-control applications.

The 20G1AJE395AN4NNNNN is therefore positioned toward the high-power end of the industrial drive market rather than the compact machine-drive segment.

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3. Main Technical Parameters

Parameter	Specification
Model	20G1AJE395AN4NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product	Air-Cooled AC Drive
Input Voltage	600 VAC class
Input Phase	3 Phase
Light-Duty Current	395 A
Normal-Duty Current	Approx. 355 A
Heavy-Duty Current	Approx. 295 A
Light-Duty Motor Rating	450 HP
Normal-Duty Motor Rating	400 HP
Heavy-Duty Motor Rating	350 HP
Approximate Metric Power Class	300 kW class
Input Type	AC Input with Precharge
DC Input Terminals	None
Cooling	Air Cooled
Frame Size	Frame 8
Enclosure	NEMA Type 12
IP Rating	IP54
Package Style	800 mm Deep MCC Style
Filtering	Filtered
CM Jumper	Removed
Dynamic Braking	None
Internal Braking Transistor	None
HIM	Enhanced LCD Full Numeric
HIM Protection	IP66 / NEMA Type 4X/12 class
Communication	Embedded EtherNet/IP
Approx. Dimensions	2100–2500 × 600 × 800 mm
Approx. Weight	600–650 kg
Product Status	Discontinued
Direct Replacement	20G1AJE395JN4NNNNN

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4. Electrical Performance

The 20G1AJE395AN4NNNNN is designed for a 600 VAC class three-phase supply.

Its nominal light-duty current rating is 395 A.

For normal-duty operation, the drive is approximately in the 355 A continuous class.

For heavy-duty operation, the continuous current capability is approximately 295 A.

The difference between these current ratings is important.

A drive should not be selected solely from the motor horsepower shown on the nameplate.

The actual motor full-load current, operating duty, overload requirements, acceleration torque, and mechanical load profile must all be considered.

Duty Classification	Continuous Current	Approx. 1-Minute Current	Approx. Short-Time Current	Motor Rating
Light Duty	395 A	435 A	—	450 HP
Normal Duty	355 A	391 A	533 A / 3 s	400 HP
Heavy Duty	295 A	443 A	533 A / 3 s	350 HP

The light-duty rating provides the highest horsepower capacity.

The normal-duty rating is appropriate for many general industrial applications.

The heavy-duty rating is intended for more demanding mechanical loads where overload performance is more important.

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5. Understanding the 395 A Rating

The 395 A designation is one of the key identifiers of this product.

It places the drive in a substantially higher power category than smaller PowerFlex 755 configurations.

For a large motor installation, current capacity is often more important than nominal horsepower alone.

Two motors with the same horsepower rating can have different current requirements because of differences in motor efficiency, power factor, voltage, service factor, and operating conditions.

For this reason, the 395 A current class provides a useful engineering margin for applications where the 355 A class may be too close to the motor’s operating current.

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6. PowerFlex 755 Architecture

The PowerFlex 755 series is designed around a modular industrial-drive concept.

It is intended to support large motor-control applications where communication, feedback, I/O, safety, diagnostics, and advanced motor-control functions may need to be integrated into a larger automation system.

The 20G1AJE395AN4NNNNN represents a high-power packaged configuration within this platform.

Its Frame 8 architecture is physically much larger than compact variable-frequency drives.

This makes it particularly suitable for large motors used in plant equipment.

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7. Enhanced LCD Full Numeric HIM

The AN4 configuration includes an Enhanced LCD Full Numeric HIM.

This is one of the main differences between the AN4 and AN0 versions of the same current class.

The local operator interface provides practical access to drive parameters and operating information.

Typical maintenance functions include:

• Parameter viewing
• Parameter adjustment
• Motor setup
• Drive status monitoring
• Fault monitoring
• Alarm monitoring
• Operating-value inspection
• Speed reference adjustment
• Frequency monitoring
• Current monitoring
• Basic commissioning

For large industrial equipment, this local interface can be valuable during commissioning and maintenance.

A technician can work directly with the drive without depending entirely on a remote control system.

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8. HIM Protection

The Enhanced LCD Full Numeric HIM configuration is associated with an IP66 / NEMA Type 4X/12 class operator-interface arrangement.

This is useful where the HIM is mounted on or associated with an industrial enclosure.

The HIM therefore provides a practical local control and diagnostic interface while the main drive remains integrated into the larger industrial electrical system.

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9. Enclosure and Environmental Protection

The drive uses an IP54 / NEMA Type 12 enclosure configuration.

This type of enclosure is appropriate for many indoor industrial environments where protection against dust, dirt, and common non-corrosive industrial contaminants is required.

The drive is supplied as an 800 mm deep MCC-style package.

This makes it suitable for large industrial electrical rooms, motor-control centers, drive cabinets, and packaged motor-control systems.

Mechanical Parameter	Specification
Model	20G1AJE395AN4NNNNN
Frame	Frame 8
Enclosure	NEMA Type 12
IP Rating	IP54
Package Style	800 mm Deep MCC Style
Cooling	Air Cooled
Approx. Height	2100–2500 mm
Approx. Width	600 mm
Approx. Depth	800 mm
Approx. Weight	600–650 kg
Installation	Industrial / MCC / Large Drive System
Service Access	Front service access recommended
Cooling Requirement	Adequate forced-air ventilation

The dimensions and weight above should be treated as planning values.

The exact mechanical drawing should be used before final cabinet fabrication, foundation design, lifting planning, shipping arrangements, or installation work.

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10. Dimensions and Weight

The 20G1AJE395AN4NNNNN is a substantial Frame 8 drive.

For preliminary engineering purposes, the physical envelope can be considered approximately:

2100–2500 mm high × 600 mm wide × 800 mm deep

The approximate equipment weight is:

600–650 kg

Because this is a large packaged drive, transportation and installation require more planning than for a compact VFD.

The equipment should be evaluated for:

• Floor loading
• Lifting access
• Forklift access
• Crane requirements
• Door clearance
• Service clearance
• Cable routing
• Cooling airflow
• Maintenance access

Physical Parameter	Approximate Value
Model	20G1AJE395AN4NNNNN
Height	2100–2500 mm
Width	600 mm
Depth	800 mm
Weight	600–650 kg
Frame	8
Enclosure	NEMA Type 12
IP Rating	IP54
Package	800 mm Deep MCC Style

For a final installation, the approximate values above should be replaced by the exact mechanical drawing for the specific configuration.

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11. AC Input with Precharge

The drive uses an AC input with precharge.

There are no DC input terminals in this configuration.

The precharge arrangement manages the initial charging of the drive’s DC bus when the drive is energized.

This configuration is well suited to direct connection to an appropriate three-phase AC supply.

However, it should be taken into account when designing a common DC bus or when replacing a drive that previously used a different DC-bus arrangement.

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12. Filtering

The 20G1AJE395AN4NNNNN uses a filtered configuration.

Filtering can be important in industrial installations containing several variable-frequency drives, PLC systems, instrumentation, sensors, communication networks, and other electrically sensitive equipment.

The drive’s filtering arrangement should be considered together with:

• Grounding
• Motor cable construction
• Cable length
• Cable routing
• Shielding
• Cabinet layout
• Other drives
• Sensitive instrumentation

A well-designed installation is essential to obtain good EMC performance.

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13. CM Jumper Removed

The catalog configuration specifies the CM jumper as removed.

This is a specific electrical configuration rather than a cosmetic catalog-number difference.

The CM configuration should be considered during system grounding and EMC design.

When replacing a drive, the replacement unit should be checked carefully to ensure that its CM configuration is appropriate for the existing electrical system.

This is especially important in large plants where long motor cables, multiple drives, transformers, and sensitive instrumentation may coexist.

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14. Dynamic Braking

The 20G1AJE395AN4NNNNN is specified with no internal dynamic-braking transistor.

This is an important consideration for applications with high-inertia loads or rapid deceleration requirements.

Examples include:

• Large conveyors
• Hoisting-related machinery
• High-inertia fans
• Centrifuges
• Large rotating machinery
• Certain material-handling systems

If rapid deceleration or regenerative energy management is required, the braking architecture must be evaluated separately.

The absence of an internal braking transistor does not mean the drive cannot be used in a demanding application.

It means the braking strategy needs to be engineered according to the mechanical load and system requirements.

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15. Embedded EtherNet/IP

The PowerFlex 755 platform supports embedded EtherNet/IP communication.

This is one of the most useful features for plant-level automation.

The drive can exchange information with a PLC or other control system through the industrial network.

Typical data may include:

• Start command
• Stop command
• Speed reference
• Frequency reference
• Motor current
• Drive status
• Fault status
• Warning status
• Output frequency
• Operating condition
• Diagnostic information

This architecture allows the drive to become part of a coordinated production system rather than functioning as an isolated motor controller.

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16. Industrial Automation Integration

The 20G1AJE395AN4NNNNN is particularly suitable for automation systems where the drive is controlled from a central PLC or HMI.

A typical architecture may include:

PLC → EtherNet/IP Network → PowerFlex 755 Drive → Large AC Motor → Mechanical Process

The operator may control the process from a plant HMI while the drive handles the actual motor-speed control.

The drive can return operational and diagnostic information to the control system.

This approach can simplify centralized monitoring and reduce the amount of hardwired control wiring required.

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17. Applications

17.1 Large Pump Systems

Large pumps are one of the most suitable applications for this drive.

Examples include:

• Raw-water pumps
• Process-water pumps
• Cooling-water pumps
• Transfer pumps
• Industrial circulation pumps
• Wastewater pumps
• Water-treatment pumps
• Large irrigation pumps

Variable-speed operation can allow the pump to respond to changing process demand.

This can improve flow and pressure control and may reduce unnecessary motor operation at full speed.

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18. Fan Applications

Large industrial fans can require several hundred horsepower.

The drive can control fan speed according to airflow requirements.

Potential applications include:

• Industrial ventilation
• Furnace ventilation
• Exhaust systems
• Forced-draft fans
• Induced-draft fans
• Large process fans
• Dust-collection systems
• Industrial air-handling equipment

For fan applications, the light-duty rating can be particularly useful when the load profile is appropriate.

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19. Blower Applications

Large blowers are commonly used in water-treatment plants, process industries, chemical systems, pneumatic conveying systems, and industrial ventilation.

The drive can provide variable-speed control and network integration.

Typical benefits include:

• Adjustable airflow
• Controlled acceleration
• Centralized monitoring
• Process integration
• Reduced mechanical shock
• Improved operating flexibility

The exact motor rating must still be checked against the appropriate duty classification.

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20. Conveyor Applications

Large conveyor systems can require substantial motor current.

The drive can provide controlled acceleration and deceleration.

This can help reduce mechanical shock to:

• Belts
• Gearboxes
• Couplings
• Bearings
• Material-handling equipment

The drive is particularly suitable for large industrial conveyor systems where the motor is too large for compact VFD platforms.

Potential applications include:

• Mining conveyors
• Cement conveyors
• Aggregate conveyors
• Port conveyors
• Bulk-material conveyors
• Heavy manufacturing conveyors

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21. Mining Applications

Mining equipment often uses large motors for:

• Conveyors
• Crushers
• Pumps
• Ventilation fans
• Blowers
• Processing machinery

The 395 A class provides sufficient capacity for many large mining motors, subject to the actual motor current and duty profile.

The industrial enclosure and large-frame architecture are also appropriate for large electrical rooms and motor-control systems.

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22. Cement and Aggregate Applications

Cement and aggregate facilities commonly contain high-power motor systems.

Typical applications include:

• Crushers
• Large fans
• Conveyors
• Material feeders
• Pumps
• Blowers
• Processing equipment

For heavy mechanical loads, the heavy-duty current rating must be checked carefully.

A crusher or similar machine should not be selected based solely on the light-duty horsepower rating.

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23. Water and Wastewater Applications

The drive is suitable for large water and wastewater systems.

Potential applications include:

• Raw-water pumping
• Wastewater pumping
• Aeration blowers
• Transfer stations
• Filtration systems
• Process-water circulation
• Cooling-water systems

The ability to integrate the drive into a networked automation system is particularly useful in water-treatment facilities where many motors are supervised from a central control system.

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24. Compressor Applications

Large compressors can also use variable-speed AC drives.

The drive can provide controlled motor speed while the automation system supervises process pressure, flow, temperature, and other variables.

Before applying the drive to a compressor, the motor and compressor load profile should be checked carefully.

Important considerations include:

• Starting torque
• Speed range
• Continuous load
• Overload
• Acceleration time
• Deceleration requirements
• Motor cooling

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25. Process Machinery

The drive can also be used for large process machines.

Examples include:

• Large mixers
• Material-processing machines
• Industrial blowers
• Large production equipment
• Heavy material-handling machinery
• Large rotating equipment

The main advantage is the ability to combine high-power motor control with industrial network integration.

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26. Major Product Advantages

26.1 High Current Capacity

The 395 A light-duty current rating makes this drive suitable for large industrial motors.

The normal-duty capacity of approximately 355 A provides substantial continuous operating capability.

This is one of the primary reasons to select this model over smaller PowerFlex configurations.

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26.2 400 HP Normal-Duty Capability

The approximately 400 HP normal-duty rating provides a useful operating range for large industrial motors.

This makes the drive appropriate for many high-power pumps, fans, conveyors, blowers, and process machines.

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26.3 600 VAC Class Operation

The 600 VAC class is useful for high-power industrial installations.

Higher-voltage motor systems can be advantageous for large motors because the same power can be transferred at lower current than would be required at lower voltage.

The actual facility voltage must always be verified before selecting the drive.

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26.4 Large Frame 8 Platform

The Frame 8 architecture provides a robust mechanical and electrical platform for large motor control.

This makes it suitable for plant-level equipment rather than small machine applications.

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26.5 Enhanced Local Operator Interface

The AN4 configuration provides the Enhanced LCD Full Numeric HIM.

This is a practical advantage for:

• Commissioning
• Troubleshooting
• Maintenance
• Parameter adjustment
• Local monitoring

It is particularly useful where technicians need direct access to the drive.

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26.6 Embedded EtherNet/IP

Network communication allows the drive to become part of a larger automation system.

This can reduce hardwired control requirements and simplify centralized monitoring.

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26.7 Industrial Enclosure Protection

The IP54 / NEMA Type 12 enclosure provides protection suitable for many indoor industrial environments.

It is particularly useful for installations where a basic open-frame drive would not provide sufficient enclosure protection.

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26.8 Filtered Configuration

The filtered electrical configuration supports EMC-oriented system design.

This can be valuable in facilities containing multiple drives and sensitive automation equipment.

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26.9 Flexible Duty Ratings

The three duty classifications allow engineers to match the drive to different load profiles.

This is important because a pump, fan, conveyor, and crusher do not place identical demands on the drive.

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27. Product Advantages Summary

Advantage	Description
High Current	395 A light-duty class
Normal-Duty Capacity	Approx. 355 A
Normal-Duty Motor Rating	Approx. 400 HP
Voltage	600 VAC class
Frame	8
Enclosure	IP54 / NEMA Type 12
Cooling	Air Cooled
Local Interface	Enhanced LCD Full Numeric HIM
Communication	Embedded EtherNet/IP
Filtering	Integrated filtered configuration
Input	AC with Precharge
CM Configuration	Jumper Removed
Braking	No Internal Dynamic-Braking Transistor
Package	800 mm Deep MCC Style
Application Range	Large Industrial Motors

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28. Installation Requirements

Because of the physical size and weight of the drive, installation should be planned carefully.

The approximate weight of 600–650 kg means that normal manual handling is not appropriate.

The installation should provide suitable lifting and transportation equipment.

The installation area should also provide sufficient clearance for cooling airflow.

Important installation considerations include:

• Floor loading
• Equipment access
• Cable entry
• Motor cable routing
• Grounding
• Cooling airflow
• Maintenance access
• Door clearance
• Lifting clearance
• Electrical isolation
• Service access

The final dimensions should be verified against the exact mechanical drawing before construction.

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29. Cooling Considerations

The drive uses forced-air cooling.

Large power components generate significant heat during operation.

The installation therefore needs sufficient ventilation and appropriate ambient conditions.

The cooling system should be inspected during preventive maintenance.

Typical maintenance checks include:

• Fan operation
• Airflow
• Dust accumulation
• Ventilation openings
• Cooling-path obstruction
• Drive temperature
• Cabinet temperature

A clean cooling path can help maintain reliable operation and reduce thermal stress.

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30. Motor Selection

When selecting a motor for this drive, the following parameters should be checked:

Motor Parameter	Importance
Rated Voltage	Must match the drive system
Full-Load Current	Must remain within applicable drive rating
Horsepower	Compare with LD / ND / HD rating
Frequency	Verify operating requirements
Speed	Verify required process range
Starting Torque	Important for heavy machinery
Overload	Determine required duty
Acceleration	Verify motor and load requirements
Deceleration	Determine braking requirements
Cable Length	Check installation requirements
Motor Insulation	Important for VFD operation
Environment	Verify motor cooling and enclosure

The motor’s actual current should be used as a primary selection criterion.

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31. Maintenance and Service

The drive is intended for industrial service and should be incorporated into a preventive-maintenance program.

Recommended inspection items include:

• Cooling fans
• Air passages
• Power terminals
• Grounding connections
• Motor cables
• Input cables
• Enclosure condition
• HIM operation
• Fault history
• Alarm history
• Network communication
• Operating temperature
• Mechanical connections

The Enhanced LCD HIM can be especially useful during maintenance.

Technicians can inspect drive status and parameters directly at the equipment.

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32. Replacement Considerations

The original 20G1AJE395AN4NNNNN configuration is discontinued.

The listed direct replacement is:

20G1AJE395JN4NNNNN

The replacement should be evaluated against the existing installation before ordering.

The main items to compare are:

• Input voltage
• Motor current
• Duty rating
• Horsepower
• Frame size
• Enclosure
• HIM configuration
• CM jumper
• Filtering
• Braking
• Network configuration
• Physical dimensions
• Cable connections

A catalog-number replacement should therefore be treated as an engineering replacement exercise rather than simply a part-number substitution.

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33. Five Recommended Related PowerFlex 755 Models

The following models are closely related to the 20G1AJE395AN4NNNNN.

Model	Series	Voltage	Current Class	LD / ND / HD Motor Rating	HIM	CM Jumper
20G1AJE295AN4NNNNN	PowerFlex 755	600 VAC	295 A	350 / 300 / 250 HP	Enhanced LCD Full Numeric	Removed
20G1AJE355AN4NNNNN	PowerFlex 755	600 VAC	355 A	400 / 350 / 300 HP	Enhanced LCD Full Numeric	Removed
20G1AJE395AN4NNNNN	PowerFlex 755	600 VAC	395 A	450 / 400 / 350 HP	Enhanced LCD Full Numeric	Removed
20G1AJE435AN4NNNNN	PowerFlex 755	600 VAC	435 A class	Higher-power 600 V class	Enhanced LCD Full Numeric	Removed
20G1AJE460AN4NNNNN	PowerFlex 755	600 VAC	460 A class	Higher-power 600 V class	Enhanced LCD Full Numeric	Removed

These models provide a useful progression around the 395 A configuration.

The 295 A and 355 A models can be considered when the motor current requirement is lower.

The 435 A and 460 A configurations provide additional current capacity for larger motors.

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34. Five Closely Related Configuration Variants

For replacement and engineering comparison, the same current class can also be evaluated using different suffix configurations.

Model	Voltage	Current Class	HIM	CM Jumper	Main Configuration Difference
20G1AJE395AN0NNNNN	600 VAC	395 A	No HIM	Removed	No local HIM
20G1AJE395AN4NNNNN	600 VAC	395 A	Enhanced LCD Full Numeric	Removed	Subject configuration
20G1AJE395JN0NNNNN	600 VAC	395 A	No HIM	Installed	Alternate CM configuration
20G1AJE395JN4NNNNN	600 VAC	395 A	Enhanced LCD Full Numeric	Installed	Replacement-oriented configuration

The difference between AN0 and AN4 is primarily the operator-interface arrangement.

The difference between A and J configurations relates to the CM-jumper configuration.

These differences can become important when replacing an existing drive.

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35. Five Popular Allen-Bradley Models for Comparison

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

Model	Product Family	Voltage Class	Approx. Power Class	Product Type	Typical Application
25B-D030N114	PowerFlex 525	480 VAC class	30 HP class	Compact AC Drive	Pumps, conveyors, machines
25C-D030N114	PowerFlex 527	480 VAC class	30 HP class	AC Drive	Machine automation
20G1AGC260JN0NNNNN	PowerFlex 755	480 VAC class	Large motor	Air-Cooled AC Drive	Pumps, fans, conveyors
20G1AGC302JA0NNNNN	PowerFlex 755	480 VAC class	Large motor	Air-Cooled AC Drive	Heavy industrial machinery
20G1AGE053JA0NNNNN	PowerFlex 755	600 VAC class	Medium/high power	Air-Cooled AC Drive	Industrial process equipment

The first two models are considerably smaller than the 20G1AJE395AN4NNNNN.

They are more appropriate for compact machinery and lower-power motors.

The PowerFlex 755 models are more appropriate for larger motors and demanding industrial applications.

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36. Application Comparison Table

Application	Typical Requirement	Suitability
Large Pump	Variable speed / high power	Excellent
Cooling-Water Pump	Continuous high-power operation	Excellent
Wastewater Pump	High motor current	Excellent
Large Fan	Variable airflow	Excellent
Industrial Blower	Variable speed	Excellent
Conveyor	Controlled acceleration	Very Good
Mining Conveyor	High motor power	Very Good
Cement Conveyor	Large motor control	Very Good
Crusher	High torque / overload	Requires duty verification
Compressor	Variable-speed operation	Very Good
Material Handling	Controlled motor operation	Excellent
Process Machine	PLC-integrated control	Excellent
Large Mixer	High current	Very Good
Industrial Ventilation	Variable airflow	Excellent

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37. Comparison with the 355 A Model

The 20G1AJE395AN4NNNNN is a higher-current model than the 20G1AJE355AN4NNNNN.

Parameter	20G1AJE355AN4NNNNN	20G1AJE395AN4NNNNN
Model	20G1AJE355AN4NNNNN	20G1AJE395AN4NNNNN
Voltage	600 VAC	600 VAC
Light-Duty Current	355 A	395 A
Normal-Duty Current	Approx. 295 A	Approx. 355 A
Heavy-Duty Current	Approx. 272 A	Approx. 295 A
Light-Duty HP	400 HP	450 HP
Normal-Duty HP	350 HP	400 HP
Heavy-Duty HP	300 HP	350 HP
Frame	8	8
Enclosure	IP54 / NEMA 12	IP54 / NEMA 12
HIM	Enhanced LCD Full Numeric	Enhanced LCD Full Numeric
CM Jumper	Removed	Removed
Filtering	Filtered	Filtered
Braking	None	None

The 395 A configuration therefore provides a higher current and horsepower range while retaining the same general product architecture.

It is a logical choice when the 355 A class does not provide sufficient motor-current margin.

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38. Comparison with the 395 A AN0 Configuration

The AN0 and AN4 versions have the same basic power class.

The primary difference is the HIM configuration.

Parameter	20G1AJE395AN0NNNNN	20G1AJE395AN4NNNNN
Model	20G1AJE395AN0NNNNN	20G1AJE395AN4NNNNN
Voltage	600 VAC	600 VAC
Light-Duty Current	395 A	395 A
Normal-Duty Current	Approx. 355 A	Approx. 355 A
Heavy-Duty Current	Approx. 295 A	Approx. 295 A
Light-Duty HP	450 HP	450 HP
Normal-Duty HP	400 HP	400 HP
Heavy-Duty HP	350 HP	350 HP
HIM	No HIM	Enhanced LCD Full Numeric
CM Jumper	Removed	Removed
Filtering	Filtered	Filtered
Frame	8	8
Enclosure	IP54 / NEMA 12	IP54 / NEMA 12

The AN4 version is more appropriate when local drive operation and diagnostics are required.

The AN0 version is useful when the drive is intended to be operated mainly through a PLC, HMI, SCADA system, or centralized control station.

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39. Engineering Advantages of the AN4 Configuration

The AN4 configuration provides several practical benefits compared with a no-HIM configuration.

Local Commissioning

A technician can work directly with the drive during commissioning.

Local Diagnostics

Faults, alarms, and operating values can be checked at the equipment.

Parameter Access

Drive parameters can be reviewed and adjusted locally.

Maintenance Convenience

Maintenance personnel do not always need to access a remote control station for basic drive information.

Reduced Dependence on External Tools

Basic drive operation and diagnostic functions can be accessed through the local HIM.

For large industrial facilities, these advantages can reduce troubleshooting time.

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40. Recommended Application Strategy

For a new installation, the drive should be selected using the following sequence:

Motor Voltage → Motor Current → Load Duty → Horsepower → Overload → Acceleration → Deceleration → Braking → Communication → Enclosure → Mechanical Installation

This sequence helps prevent selecting a drive simply from the motor horsepower.

For example, a 400 HP motor operating a heavily loaded conveyor may require a different drive evaluation than a 400 HP motor operating a relatively stable fan.

The mechanical load profile is therefore just as important as the motor nameplate.

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41. Important Engineering Considerations

The following points deserve special attention when using the 20G1AJE395AN4NNNNN:

1. High-Power Installation

This is a large industrial drive and requires appropriate electrical and mechanical infrastructure.

2. Cooling

The forced-air cooling system must have adequate ventilation.

3. Weight

The approximate 600–650 kg equipment weight requires proper lifting and transportation planning.

4. Motor Current

The actual motor full-load current should be checked against the selected duty rating.

5. Braking

There is no internal dynamic-braking transistor in this configuration.

6. HIM

The AN4 configuration includes an enhanced numeric HIM.

7. CM Jumper

The CM jumper is removed and should be considered during grounding and EMC design.

8. DC Terminals

The catalog configuration does not provide DC input terminals.

9. Network

Embedded EtherNet/IP can be used for industrial automation integration.

10. Lifecycle

The original catalog configuration is discontinued and should be evaluated carefully for new projects.

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42. Final Technical Summary

Category	Specification
Model	20G1AJE395AN4NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	Air-Cooled AC Drive
Input Voltage	600 VAC class
Input Phase	3 Phase
Light-Duty Current	395 A
Normal-Duty Current	Approx. 355 A
Heavy-Duty Current	Approx. 295 A
Light-Duty Rating	450 HP
Normal-Duty Rating	400 HP
Heavy-Duty Rating	350 HP
Approx. Metric Power Class	300 kW class
Frame	8
Enclosure	NEMA Type 12
Protection	IP54
Package	800 mm Deep MCC Style
Cooling	Air Cooled
Input Type	AC Input with Precharge
DC Terminals	None
Filtering	Filtered
CM Jumper	Removed
Dynamic Braking	None
Internal Braking Transistor	None
Communication	Embedded EtherNet/IP
HIM	Enhanced LCD Full Numeric
HIM Protection	IP66 / NEMA Type 4X/12 class
Approx. Height	2100–2500 mm
Approx. Width	600 mm
Approx. Depth	800 mm
Approx. Weight	600–650 kg
Product Status	Discontinued
Direct Replacement	20G1AJE395JN4NNNNN
Main Applications	Pumps, fans, blowers, conveyors, compressors, water systems, mining, cement, process machinery

43. Overall Product Assessment

The Allen-Bradley 20G1AJE395AN4NNNNN is a large-frame PowerFlex 755 air-cooled AC drive intended for high-power industrial motor control.

Its 600 VAC three-phase input, 395 A light-duty rating, approximately 355 A normal-duty rating, and approximately 295 A heavy-duty rating provide a wide operating range for large industrial motors.

The corresponding approximately 450 HP light-duty, 400 HP normal-duty, and 350 HP heavy-duty ratings make the drive suitable for a broad range of large mechanical systems.

The Frame 8, IP54 / NEMA Type 12, and 800 mm deep MCC-style package provide a substantial industrial platform for plant-level motor control.

The Enhanced LCD Full Numeric HIM is a major practical advantage of the AN4 configuration, particularly for commissioning and maintenance.

The embedded EtherNet/IP capability makes the drive suitable for centralized PLC and HMI control.

The filtered input, removed CM jumper, AC precharge, and no internal dynamic-braking transistor define important electrical characteristics that must be considered during system design.

For large pumps, fans, blowers, conveyors, compressors, water-treatment systems, mining equipment, cement equipment, and other high-power process machinery, this drive provides a strong combination of current capacity, industrial enclosure protection, local operator access, and automation-system integration.

For existing equipment, the catalog number remains useful for identification and replacement planning.

For new installations, the direct replacement 20G1AJE395JN4NNNNN should be evaluated, with the complete electrical, mechanical, HIM, grounding, communication, and enclosure configuration checked before final selection.