Company Information
E-mail		[email protected]
Mobile		+8615980777398
Whatsapp		+8615980777398
WeChat		15980777398

Allen-Bradley 20G1ABF370AN0NNNNN PowerFlex 755 AC Drive

1. Product Introduction

The Allen-Bradley 20G1ABF370AN0NNNNN is a high-power PowerFlex 755 air-cooled AC drive designed for large industrial motor-control applications.

This model belongs to the PowerFlex 755 family and is configured for a 690 VAC, three-phase electrical system, with a rated output current of 370 A. It is a Frame 8 drive using forced-air cooling and an AC input with precharge. The configuration does not provide external DC terminals and is designed in a Type 1, IP20, 600 mm deep MCC-style enclosure arrangement. 

The 20G1ABF370AN0NNNNN is intended for large motors and high-capacity machinery where conventional compact variable-frequency drives are no longer suitable.

Its principal power ratings are 400 kW for light-duty operation, 355 kW for normal-duty operation, and 300 kW for heavy-duty operation. These three ratings are important because the correct drive selection depends not only on motor nameplate power but also on the mechanical load profile, overload requirements, acceleration characteristics, and operating duty.

The model also includes embedded EtherNet/IP, making it suitable for integration into larger industrial automation systems.

The catalog configuration specifies filtered operation with the CM jumper removed, no dynamic braking, and a blank configuration with no HIM. 

An important point for equipment selection is that 20G1ABF370AN0NNNNN is a discontinued configuration. Its discontinuation date was June 30, 2024, and the direct replacement is the 20G1ABF370JN0NNNNN. The older AN0 configuration therefore remains useful when identifying existing equipment, replacement parts, maintenance requirements, or legacy installations, while the JN0 configuration is the more relevant choice for a new equivalent installation. 

---

2. Brand and Series

Item	Specification
Brand	Allen-Bradley
Series	PowerFlex 755
Product Family	PowerFlex 750-Series
Product Type	Air-Cooled AC Drive
Drive Configuration	PowerFlex 755 AC Drive
Model / Catalog Number	20G1ABF370AN0NNNNN
Voltage Class	690 VAC
Phase	Three Phase
Output Current	370 A
Frame Size	Frame 8
Cooling	Forced Air
Input Configuration	AC Input with Precharge
DC Terminals	None
Enclosure	Type 1 / IP20
MCC Configuration	600 mm Deep MCC Style
Dynamic Braking	None
HIM	Blank / No HIM
Filtering	Filtered
CM Jumper	Removed
Communication	Embedded EtherNet/IP
Product Status	Discontinued
Direct Replacement	20G1ABF370JN0NNNNN

The PowerFlex 755 series is a high-capacity industrial AC-drive platform intended for applications ranging from pumps and fans to conveyors, process equipment, material handling, and other large motor-driven machinery.

The series supports a broad range of motor-control configurations and is particularly suitable when an application requires more flexibility and power than a compact machine-level drive can provide. The 690 VAC version covers a particularly high-power segment of the PowerFlex 755 range. 

---

3. Detailed Technical Specifications

Parameter	Specification
Catalog Number	20G1ABF370AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Drive Type	Air-Cooled AC Drive
Input Voltage	690 VAC
Input Phase	3 Phase
Rated Output Current	370 A
Light-Duty Rating	400 kW
Normal-Duty Rating	355 kW
Heavy-Duty Rating	300 kW
Frame	Frame 8
Cooling Method	Forced Air
Input Type	AC Input with Precharge
DC Input Terminals	None
Dynamic Braking	None
Communication	Embedded EtherNet/IP
Protection Configuration	Standard Protection
Filtering	Filtered
CM Jumper	Removed
HIM	Blank / No HIM
Enclosure	Type 1 / IP20
MCC Depth	600 mm
Installation Style	MCC Style
Motor-Control Application	Large Industrial AC Motors
Approx. Overall Installation Envelope	Approximately 2100 × 600 × 600 mm*
Approx. Weight	Approximately 79.4 kg for the drive-unit reference configuration*
Typical Duty	Large Industrial Continuous or Variable-Speed Loads
Product Status	Discontinued
Direct Replacement	20G1ABF370JN0NNNNN

*The dimensional and weight figures should be treated as preliminary engineering values rather than final fabrication dimensions. The exact mechanical arrangement, accessories, option bays, packaging, and installation method can affect the final envelope and shipping weight. For cabinet fabrication, lifting design, and floor-loading calculations, the dimensional drawing and actual equipment nameplate should take precedence.

---

4. Electrical Rating

The most important characteristic of the 20G1ABF370AN0NNNNN is its 370 A, 690 VAC, three-phase configuration.

This puts the model firmly into the large industrial drive category.

The 690 VAC voltage class is particularly useful for high-power motors because a higher motor voltage allows the required motor power to be delivered with lower current than would be required at a lower voltage.

For example, a large process motor operating at several hundred kilowatts can require substantial current. Moving the motor system to the 690 VAC class can make high-power motor distribution more practical from the standpoint of conductors, switchgear, and overall electrical architecture.

The 370 A output rating also provides considerable capacity for large industrial motors.

However, the current rating should not be used alone when selecting the drive.

The motor’s actual full-load current, overload requirements, motor temperature, ambient conditions, acceleration time, operating speed range, and application torque must all be considered.

---

5. Power Ratings

The 20G1ABF370AN0NNNNN has three important power-duty ratings.

Duty	Power Rating
Light Duty	400 kW
Normal Duty	355 kW
Heavy Duty	300 kW

These values provide flexibility for different types of mechanical loads.

A large centrifugal pump or fan normally has a different load profile from a crusher, conveyor, mixer, or heavily loaded process machine.

For a variable-torque application with relatively smooth operation, the light-duty or normal-duty rating may be appropriate.

For a machine requiring greater overload capability and more demanding acceleration, the heavy-duty rating should be considered.

The 300 kW heavy-duty rating is particularly important for applications where the motor must handle high starting torque, cyclic loading, or substantial transient loading.

---

6. Product Configuration

The catalog description of the 20G1ABF370AN0NNNNN identifies the following configuration:

PowerFlex 755 AC Drive, embedded EtherNet/IP, standard protection, forced air, AC input with precharge, no DC terminals, Type 1/IP20, 600 mm deep MCC style, 370 A, 400 kW LD, 355 kW ND, 300 kW HD, 690 VAC, three phase, Frame 8, filtered, CM jumper removed, no dynamic braking, blank/no HIM. 

Each part of this configuration has practical significance.

The high-current rating determines the approximate motor capacity.

The 690 VAC rating determines the applicable electrical system.

The Frame 8 designation determines the general physical and power structure class.

The air-cooled construction determines the thermal-management requirements.

The no-HIM configuration indicates that local drive operation through a built-in keypad is not part of the standard catalog configuration.

The CM jumper setting affects the grounding and common-mode configuration.

The absence of dynamic braking is relevant when the driven machine has significant regenerative energy.

---

7. Embedded EtherNet/IP

The 20G1ABF370AN0NNNNN includes embedded EtherNet/IP.

This provides a practical method for integrating the drive into an industrial automation network.

A large motor drive is rarely an isolated piece of equipment in a modern production plant.

It normally communicates with a PLC, HMI, SCADA system, DCS, or other supervisory controller.

Through network integration, the control system can exchange information such as:

• Start commands.
• Stop commands.
• Speed reference.
• Output frequency.
• Motor current.
• Drive status.
• Fault status.
• Alarm information.
• Operating conditions.
• Diagnostic information.
• Parameter information.
• Reset commands.

For large facilities with many variable-speed motors, network integration can significantly simplify the control architecture.

Instead of running large numbers of individual hardwired signals from the drive to a control cabinet, many operating values can be exchanged over the industrial network.

---

8. No-HIM Configuration

The 20G1ABF370AN0NNNNN is specified as Blank / No HIM.

This means the drive does not have the local enhanced LCD operator interface included in the configuration.

This arrangement can be advantageous when the drive is intended to operate as part of a centralized automation system.

For example, a plant may use a PLC and HMI to control all major motor drives.

In that type of architecture, operators normally interact with the motor through the central HMI rather than directly through the drive.

A no-HIM configuration can therefore be appropriate for:

• Centralized control rooms.
• Automated pumping stations.
• Process plants.
• Large conveyor systems.
• Remote motor rooms.
• Distributed I/O architectures.
• PLC-controlled production equipment.

However, if local operator interaction is important, a related PowerFlex 755 configuration with a suitable HIM should be considered.

---

9. CM Jumper Removed

The 20G1ABF370AN0NNNNN is configured with the CM jumper removed.

This is an important configuration detail when considering electromagnetic compatibility, common-mode behavior, and grounding.

The correct CM configuration should be evaluated together with:

• Facility grounding.
• Motor-frame grounding.
• Input power system.
• Motor cable construction.
• Cable length.
• Shielding.
• Cabinet bonding.
• EMC requirements.
• Installation environment.

The CM jumper configuration should not be changed simply as a matter of preference.

It should be coordinated with the overall electrical and EMC design.

---

10. Dynamic Braking

The 20G1ABF370AN0NNNNN is specified with no dynamic braking. 

This is important for applications where a large rotating machine needs to decelerate quickly.

Large motors and driven machines can store considerable kinetic energy.

During deceleration, that energy may be returned to the drive’s DC bus.

If the machine requires rapid stopping or repeated high-energy deceleration, the braking strategy should be evaluated during system design.

This is particularly relevant to:

• High-inertia fans.
• Large conveyors.
• Centrifuges.
• Hoisting systems.
• Large rotating process machinery.
• Crushers.
• Machines requiring frequent stopping.

A drive without dynamic braking should not automatically be assumed to be unsuitable.

The actual application determines whether braking hardware or another energy-management method is required.

---

11. Cooling System

The 20G1ABF370AN0NNNNN uses forced-air cooling.

At approximately 355 kW normal-duty operation, thermal management becomes an important engineering issue.

The drive generates heat during operation, and that heat must be removed from the electrical installation.

A suitable installation should provide adequate:

• Air circulation.
• Ventilation.
• Cabinet cooling.
• Temperature control.
• Service access.
• Fan maintenance.
• Heat dissipation.
• Clearance around ventilation areas.

High-power drives should not be installed in a poorly ventilated enclosure simply because the physical dimensions appear to fit.

The thermal load generated by the drive should be incorporated into the electrical-room or MCC heat-load calculation.

---

12. Type 1 / IP20 MCC-Style Construction

The model uses a Type 1 / IP20, 600 mm deep MCC-style configuration. 

This is intended for an industrial electrical installation rather than direct exposure to harsh outdoor conditions.

Type 1/IP20 equipment requires an appropriate installation environment.

If the drive is exposed to:

• Water.
• Oil mist.
• Excessive dust.
• Corrosive gases.
• Condensation.
• Outdoor weather.

additional enclosure or environmental protection may be required.

The surrounding MCC or electrical room should therefore be selected with the drive’s environmental limitations in mind.

---

13. Dimensions and Weight

The physical size of the 20G1ABF370AN0NNNNN is significantly larger than that of compact variable-frequency drives.

The catalog configuration identifies the unit as a 600 mm deep MCC-style Frame 8 drive. 

For preliminary planning, an approximate envelope of:

Height: approximately 2100 mm

Width: approximately 600 mm

Depth: approximately 600 mm

can be used as a planning reference.

A commonly published drive-unit reference weight is approximately 79.4 kg, but actual installation and shipping weight can differ depending on the exact assembly, option configuration, packaging, and associated MCC structure.

For a new cabinet design, the actual dimensional drawing should always be used.

The installation team should also consider:

• Lifting equipment.
• Floor loading.
• Cabinet base construction.
• Front service clearance.
• Cable-entry space.
• Cable-bending radius.
• Ventilation clearance.
• Maintenance access.
• Removal path for replacement.

For a large Frame 8 drive, the ability to physically remove and replace the equipment can be just as important as the initial installation.

---

14. Main Product Applications

14.1 Large Water Pumps

One of the most suitable applications for this drive is large-scale pumping.

Typical installations include:

• Municipal water transfer.
• Industrial water supply.
• Cooling-water circulation.
• Wastewater pumping.
• Process-water systems.
• Booster pumping.
• Irrigation.
• Large fluid-transfer systems.

The ability to vary motor speed can allow the pumping system to respond to changing process requirements.

Instead of operating a motor continuously at maximum speed, the drive can provide variable-speed operation when the pump and system are designed for it.

---

14.2 Cooling-Water Systems

Large industrial plants frequently use high-capacity cooling-water pumps.

These motors can operate continuously for long periods and may require precise control of flow according to plant load.

The 20G1ABF370AN0NNNNN is well suited to this class of application when the motor current and duty requirements fall within its ratings.

Typical installations include:

• Power-generation auxiliary systems.
• Industrial cooling systems.
• Steel-process cooling.
• Cement-plant cooling.
• Large process-water loops.
• Central cooling-water systems.

---

14.3 Large Fans

Large fans and blowers are another important application area.

Examples include:

• Exhaust fans.
• Combustion-air fans.
• Cooling fans.
• Ventilation systems.
• Process-air blowers.
• Dust-collection fans.
• Tunnel ventilation.
• Industrial air-handling equipment.

Fan systems often benefit from variable-speed control because airflow demand changes according to process conditions.

---

14.4 Mining Conveyors

The high-current and high-power characteristics of the PowerFlex 755 make this model suitable for large conveyor applications where the motor operates in a demanding industrial environment.

Possible applications include:

• Ore conveyors.
• Bulk-material conveyors.
• Coal conveyors.
• Aggregate conveyors.
• Transfer conveyors.
• Long-distance material handling.

Large conveyors can have substantial mechanical inertia.

Controlled acceleration can therefore be important to prevent excessive mechanical shock to belts, couplings, gearboxes, and other mechanical components.

---

14.5 Cement Plants

Cement production involves many large motors.

The PowerFlex 755 family can be used in applications such as:

• Conveyor drives.
• Large fans.
• Dust-extraction systems.
• Material-handling equipment.
• Process pumps.
• Feed systems.
• Auxiliary machinery.

The 370 A configuration provides considerably more capacity than compact drives used on small machinery.

---

14.6 Aggregate Processing

Aggregate plants commonly use large motors for:

• Crushers.
• Conveyors.
• Screens.
• Feeders.
• Fans.
• Pumps.

These applications can have highly variable mechanical loads.

The heavy-duty rating of the drive should therefore be considered carefully when selecting a model for crusher or high-torque applications.

---

14.7 Mining Equipment

Large mining equipment can require high-power motor control with reliable speed regulation and centralized automation.

Potential applications include:

• Conveyors.
• Pumps.
• Ventilation fans.
• Processing equipment.
• Material handling.
• Auxiliary machinery.

The 690 VAC class is particularly relevant to large mining installations where motors operate at several hundred kilowatts.

---

14.8 Steel and Metals Processing

Large steel and metals plants use many high-power motor systems.

The 20G1ABF370AN0NNNNN can be considered for applications such as:

• Cooling systems.
• Large pumps.
• Fans.
• Conveyors.
• Material handling.
• Auxiliary process machinery.
• Large rotating equipment.

The actual motor-control requirements should be checked carefully because steel-processing machinery may involve rapid speed changes, high torque, or frequent acceleration and deceleration.

---

15. Main Advantages

15.1 High-Power 690 VAC Operation

The 690 VAC rating is one of the primary advantages of this configuration.

It places the drive in a voltage class commonly associated with large industrial motors.

For several-hundred-kilowatt motors, this can be advantageous for reducing current compared with lower-voltage motor systems.

---

15.2 370 A Output Capacity

The 370 A output rating provides substantial motor-control capability.

This makes the drive appropriate for large pumps, fans, conveyors, and process machinery.

The relatively high current rating also provides flexibility when matching the drive to different motor sizes within the applicable duty requirements.

---

15.3 400 kW Light-Duty Rating

The 400 kW light-duty rating makes the model suitable for appropriate variable-torque applications where the motor operates under a relatively favorable load profile.

This is particularly relevant to certain fan and pump applications.

---

15.4 355 kW Normal-Duty Rating

The 355 kW normal-duty rating provides a useful capacity for continuous industrial machinery.

For many large process applications, the normal-duty value is the most relevant figure for initial drive selection.

---

15.5 300 kW Heavy-Duty Rating

The 300 kW heavy-duty rating is important for applications involving greater overload requirements.

This can be relevant to:

• Conveyors.
• Material handling.
• Certain process machines.
• High-torque machinery.
• Machines with demanding acceleration.

---

15.6 Embedded EtherNet/IP

Network communication is a major advantage for automated facilities.

It allows the drive to become part of a larger control system rather than operating as a standalone component.

This can simplify:

• PLC integration.
• HMI monitoring.
• Alarm management.
• Drive diagnostics.
• Process control.
• Remote operation.
• Maintenance.

---

15.7 No-HIM Architecture

Although the absence of a local HIM may initially appear to be a limitation, it can be an advantage in a centralized-control architecture.

A plant may intentionally want all operator interaction to occur through a central HMI or control room.

In such a system, the no-HIM configuration can help maintain a clean and standardized operator architecture.

---

15.8 MCC-Style Installation

The 600 mm deep MCC-style configuration is well suited to industrial electrical installations.

It allows the drive to be integrated into a larger electrical distribution or motor-control structure.

This is particularly useful for large plants with standardized MCC rooms.

---

16. Product Applications by Industry

Industry	Typical Application	Suitability
Water Treatment	Large pumps	Excellent
Wastewater	Pumping systems	Excellent
Mining	Conveyors and pumps	Excellent
Cement	Fans, conveyors, process equipment	Excellent
Steel	Pumps, fans, material handling	Very Good
Metals	Large process motors	Very Good
Aggregate	Crushers, conveyors, screens	Very Good
Manufacturing	Large process machines	Very Good
Power Utilities	Auxiliary pumps and fans	Very Good
Chemical Processing	Pumps and process equipment	Very Good
Material Handling	Large conveyors	Excellent
Industrial Ventilation	Large fans and blowers	Excellent

---

17. Related PowerFlex 755 Models

The following models are useful comparisons within the same general PowerFlex 755 690 VAC family.

Model	Voltage	Current	LD / ND / HD Rating	Frame	HIM	Configuration
20G1ABF330AN0NNNNN	690 VAC	330 A	355 / 315 / 250 kW	Frame 8	No HIM	Similar 600 mm MCC configuration
20G1ABF370JN0NNNNN	690 VAC	370 A	400 / 355 / 300 kW	Frame 8	No HIM	Direct replacement configuration
20G1ABF415AN0NNNNN	690 VAC	415 A	450 / 400 / 355 kW	Frame 8	No HIM	Higher-current alternative
20G1ABF460AN0NNNNN	690 VAC	460 A	500 / 450 / 375 kW	Frame 8	No HIM	Higher-power alternative
20G1ABF500AN0NNNNN	690 VAC	500 A	530 / 500 / 400 kW	Frame 8	No HIM	Higher-power alternative

The selection table for the 690 VAC PowerFlex 755 family places the 370 A configuration at 400 kW light duty, 355 kW normal duty, and 300 kW heavy duty, with the 415 A, 460 A, and 500 A configurations providing progressively higher power capability. 

---

18. Direct Replacement

The most important related model for the 20G1ABF370AN0NNNNN is:

20G1ABF370JN0NNNNN

This is the direct replacement identified for the discontinued AN0 model. 

The electrical rating remains centered on the same 370 A, 690 VAC, Frame 8 PowerFlex 755 platform.

The major configuration difference is the CM-jumper configuration.

The older AN0 model is configured with the CM jumper removed, while the replacement JN0 model is configured with the CM jumper installed. 

For a new installation, the replacement catalog number should therefore be evaluated instead of assuming that the older AN0 catalog number remains available.

---

19. Comparison With Direct Replacement

Parameter	20G1ABF370AN0NNNNN	20G1ABF370JN0NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	690 VAC	690 VAC
Phase	3 Phase	3 Phase
Current	370 A	370 A
Light Duty	400 kW	400 kW
Normal Duty	355 kW	355 kW
Heavy Duty	300 kW	300 kW
Frame	Frame 8	Frame 8
Cooling	Air Cooled	Air Cooled
Input	AC with Precharge	AC with Precharge
DC Terminals	None	None
Dynamic Braking	None	None
HIM	No HIM	No HIM
Filtering	Filtered	Filtered
CM Jumper	Removed	Installed
Enclosure	Type 1 / IP20	Type 1 / IP20
MCC Style	600 mm Deep	600 mm Deep
EtherNet/IP	Embedded	Embedded
Product Status	Discontinued	Current replacement configuration

The two models are very closely related electrically.

The CM jumper configuration is the most obvious configuration-level difference relevant to system design.

When replacing an existing AN0 drive, the electrical and EMC installation should therefore be reviewed rather than simply treating the replacement as a physically identical component.

---

20. Five Recommended Same-Series or Related Models

20G1ABF330AN0NNNNN

This is a lower-current 690 VAC PowerFlex 755 configuration.

Its 330 A rating makes it suitable when the motor requirement is below the 370 A class.

The associated duty ratings are approximately 355 kW light duty, 315 kW normal duty, and 250 kW heavy duty.

It is a useful choice when the 370 A capacity is unnecessary.

---

20G1ABF370JN0NNNNN

This is the most important alternative because it is the direct replacement for the 20G1ABF370AN0NNNNN.

It maintains the same basic 370 A, 690 VAC PowerFlex 755 platform while changing the CM jumper configuration.

For new projects, this is the first model that should be evaluated when the original AN0 catalog number is specified by an existing design.

---

20G1ABF415AN0NNNNN

The 415 A version provides a larger current capability than the 370 A model.

Its power ratings are approximately:

• 450 kW light duty.
• 400 kW normal duty.
• 355 kW heavy duty.

This makes it suitable when the motor’s current or overload requirements exceed the 370 A configuration.

---

20G1ABF460AN0NNNNN

The 460 A configuration provides another step upward in drive capacity.

It is appropriate for larger motors and applications requiring more current.

Its approximate duty ratings are:

• 500 kW light duty.
• 450 kW normal duty.
• 375 kW heavy duty.

---

20G1ABF500AN0NNNNN

The 500 A version represents an even higher-capacity 690 VAC PowerFlex 755 configuration.

Its approximate duty ratings are:

• 530 kW light duty.
• 500 kW normal duty.
• 400 kW heavy duty.

This model can be considered for applications where the 370 A or 415 A drive does not provide sufficient current capacity.

---

21. Five Popular Allen-Bradley Models for Broader Comparison

Model	Series	Voltage Class	Current Class	Typical Application	General Position
25B-D030N114	PowerFlex 525	480 VAC class	30 A class	General machinery	Compact general-purpose drive
25C-D030N114	PowerFlex 523	480 VAC class	30 A class	Compact machine applications	Compact drive
20G1ABC302JN4NNNNN	PowerFlex 755	480 VAC class	302 A class	Large industrial motors	High-power PowerFlex 755
20G1ABC460JN4NNNNN	PowerFlex 755	480 VAC class	460 A class	Large process machinery	High-current PowerFlex 755
20G1ABC650JN4NNNNN	PowerFlex 755	480 VAC class	650 A class	Very large motors	Very high-current PowerFlex 755

These five models cover a much wider range of drive sizes.

The PowerFlex 525 and PowerFlex 523 are more compact products and are generally intended for considerably smaller motors than the 20G1ABF370AN0NNNNN.

The 20G1ABC302JN4NNNNN, 20G1ABC460JN4NNNNN, and 20G1ABC650JN4NNNNN remain within the PowerFlex 755 family but represent 480 VAC-class configurations with different current capacities.

---

22. Detailed Application Selection

Application	Recommended Consideration	Important Selection Factor
Large centrifugal pump	20G1ABF370AN0NNNNN class	Variable-torque duty
Large cooling pump	20G1ABF370AN0NNNNN class	Continuous operation
Large ventilation fan	20G1ABF370AN0NNNNN class	Variable-speed operation
Dust collector fan	20G1ABF370AN0NNNNN class	Airflow and motor current
Long conveyor	20G1ABF370AN0NNNNN class	Starting torque and inertia
Mining conveyor	20G1ABF370AN0NNNNN class	Heavy-duty requirements
Cement conveyor	20G1ABF370AN0NNNNN class	Acceleration profile
Crusher	Evaluate carefully	Heavy-duty current and torque
Process pump	Excellent candidate	Motor current and process control
Large blower	Excellent candidate	Variable-torque operation
Material handling	Very suitable	Torque and acceleration
Steel-process auxiliary equipment	Very suitable	Motor duty and environment

---

23. Advantages in Water and Wastewater Applications

For large pumping systems, the 20G1ABF370AN0NNNNN offers several practical benefits.

The 690 VAC class is appropriate for large pump motors.

The 370 A current rating provides substantial capacity.

The 400 kW light-duty rating is particularly useful for suitable variable-torque applications.

EtherNet/IP allows the drive to be integrated into a centralized pumping-control system.

A PLC can manage pump sequencing, pressure control, level control, flow control, and operating schedules while the drive handles motor-speed regulation.

The no-HIM configuration can also fit installations where the pump station is operated from a central control panel rather than locally at each drive.

---

24. Advantages in Conveyor Applications

Large conveyor systems require careful control during acceleration and deceleration.

A direct-on-line starter can apply full motor torque almost immediately.

A variable-frequency drive provides the possibility of controlled acceleration.

This can reduce mechanical stress on:

• Belts.
• Gearboxes.
• Couplings.
• Shafts.
• Bearings.
• Drive pulleys.
• Mechanical structures.

For long conveyors, acceleration behavior can have a significant influence on mechanical reliability.

The PowerFlex 755 platform can therefore be attractive when the conveyor requires controlled variable-speed operation.

The application should still be evaluated for regeneration, braking requirements, and heavy-duty current demand.

---

25. Advantages in Fan Applications

Fans are often excellent candidates for variable-speed operation.

A fan system may not require maximum airflow at all times.

Reducing motor speed can allow the airflow to be matched more closely to actual process requirements.

For large industrial fans, the energy impact can be significant.

The 400 kW light-duty rating makes this model particularly relevant to large fan applications where the motor operates under a suitable variable-torque profile.

---

26. Advantages in Process Automation

A major strength of the PowerFlex 755 platform is the ability to combine motor control with industrial automation.

The drive can exchange information with the control system while independently managing motor operation.

This makes it possible to create systems in which:

• The PLC manages machine logic.
• The drive manages motor speed.
• The HMI displays process information.
• The SCADA system records operating data.
• The maintenance system monitors faults and alarms.

This architecture is especially useful in large production facilities containing many high-power motors.

---

27. Maintenance Considerations

Because the 20G1ABF370AN0NNNNN is a high-power Frame 8 drive, maintenance planning is important.

Recommended maintenance planning should include inspection of:

• Cooling fans.
• Air passages.
• Electrical connections.
• Grounding connections.
• Motor cables.
• Cabinet ventilation.
• Network connections.
• Input power connections.
• Signs of overheating.
• Signs of contamination.
• Drive fault history.

The surrounding electrical room should also be kept clean and appropriately ventilated.

Dust accumulation can interfere with cooling and may reduce the reliability of high-power electrical equipment.

---

28. Installation Planning

A large Frame 8 drive should be considered during the early stages of plant layout.

The designer should allocate enough space for:

• Installation.
• Cable routing.
• Maintenance.
• Ventilation.
• Component replacement.
• Testing.
• Lifting.
• Inspection.

The drive should not be placed in a location where other equipment blocks access to its service areas.

The cabinet arrangement should also allow technicians to safely isolate the equipment before maintenance.

---

29. Motor Matching

The most important step when matching the 20G1ABF370AN0NNNNN to a motor is to compare the motor nameplate current with the drive’s actual duty rating.

For example, a motor may have a nominal power rating that appears compatible with the drive, but its full-load current may be higher than expected.

This can occur because motor efficiency, power factor, voltage, design class, and operating conditions affect current.

Therefore, motor kW alone should never be the only selection criterion.

The following motor information should be collected:

• Rated voltage.
• Rated current.
• Rated frequency.
• Rated power.
• Rated speed.
• Power factor.
• Efficiency.
• Service factor.
• Starting requirements.
• Overload requirement.
• Application torque.

---

30. Heavy-Duty Application Considerations

The 300 kW heavy-duty rating should be given particular attention when the driven machine experiences high torque.

Examples include:

• Crushers.
• Certain conveyors.
• Mixers.
• High-inertia machinery.
• Material-handling systems.
• Machines with repeated acceleration.

Heavy-duty applications can produce substantially different electrical loading from continuous variable-torque loads.

The drive should therefore be selected according to the actual load profile.

---

31. Why the 370 A Version Is Significant

The 370 A configuration occupies an important position within the 690 VAC PowerFlex 755 range.

It is larger than the 330 A class while remaining below the 415 A and larger configurations.

This makes it useful for applications where a 330 A drive is too small but the additional capacity of a 415 A drive is unnecessary.

For system designers, this can provide a better match between motor current and drive capacity.

Properly sizing the drive can avoid both undersizing and unnecessary oversizing.

---

32. Product Selection Summary

Selection Requirement	20G1ABF370AN0NNNNN
690 VAC system	Yes
Three-phase supply	Yes
Large motor	Yes
370 A drive class	Yes
400 kW light-duty class	Yes
355 kW normal-duty class	Yes
300 kW heavy-duty class	Yes
Air-cooled installation	Yes
Embedded EtherNet/IP	Yes
Local HIM included	No
Dynamic braking included	No
DC terminals	No
Filtered configuration	Yes
CM jumper installed	No
CM jumper removed	Yes
MCC-style installation	Yes
600 mm deep configuration	Yes
Frame 8	Yes
New-project status	Use replacement model

---

33. Overall Product Evaluation

The Allen-Bradley 20G1ABF370AN0NNNNN is a high-power industrial AC drive belonging to the PowerFlex 755 series.

Its most important specifications are its 690 VAC three-phase rating, 370 A output capability, Frame 8 construction, 400 kW light-duty rating, 355 kW normal-duty rating, and 300 kW heavy-duty rating.

The combination makes it suitable for large pumps, fans, conveyors, material-handling equipment, process machinery, mining equipment, cement machinery, and other high-power motor applications.

The embedded EtherNet/IP interface makes it particularly appropriate for centralized automation architectures.

The no-HIM configuration is suitable for applications in which operators normally work through a central HMI or control system.

The air-cooled design is practical for industrial electrical rooms and MCC installations, provided adequate thermal management is provided.

The CM jumper removed configuration is another important detail and should be considered during EMC and grounding design.

The lack of dynamic braking means that applications involving rapid deceleration or high regenerative energy require additional engineering review.

---

34. Important Status Consideration

The 20G1ABF370AN0NNNNN is a discontinued catalog configuration.

The discontinuation date is June 30, 2024.

The direct replacement is 20G1ABF370JN0NNNNN. 

For an existing machine, the AN0 catalog number remains important because it identifies the equipment originally installed.

For a new machine, however, the replacement JN0 configuration should normally be evaluated first.

This is especially important for procurement, spare-parts planning, engineering documentation, and future maintenance.

---

35. Quick Technical Reference

Parameter	20G1ABF370AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	Air-Cooled AC Drive
Voltage	690 VAC
Phase	3 Phase
Output Current	370 A
Light Duty	400 kW
Normal Duty	355 kW
Heavy Duty	300 kW
Frame	Frame 8
Cooling	Forced Air
Input	AC Input with Precharge
DC Terminals	None
Dynamic Braking	None
EtherNet/IP	Embedded
Filtering	Filtered
CM Jumper	Removed
HIM	Blank / No HIM
Enclosure	Type 1 / IP20
MCC Style	600 mm Deep
Approx. Dimensions	2100 × 600 × 600 mm
Approx. Weight	79.4 kg*
Typical Applications	Pumps, Fans, Conveyors, Mining, Cement, Process Machinery
Product Status	Discontinued
Direct Replacement	20G1ABF370JN0NNNNN

*Approximate planning/reference value; confirm the exact dimensional drawing and equipment weight before final mechanical design.

---

36. Final Recommendation

The 20G1ABF370AN0NNNNN is best understood as a high-power, 690 VAC, 370 A configuration of the PowerFlex 755 family.

For an existing installation, it is a strong reference model for identifying the original drive, determining its power class, planning maintenance, and identifying compatible replacement configurations.

For new installations, the 20G1ABF370JN0NNNNN should be evaluated as the direct replacement.

When the motor load is below the 370 A requirement, the 330 A PowerFlex 755 configuration may provide a more economical match.

When the application requires greater current or overload capacity, the 415 A, 460 A, or 500 A versions provide logical alternatives.

From an application standpoint, the 20G1ABF370AN0NNNNN is particularly well matched to large pumps, industrial fans, conveyors, mining equipment, cement machinery, material-handling systems, and other high-power variable-speed motor applications.

Its combination of 690 VAC operation, 370 A output, 400/355/300 kW duty ratings, Frame 8 construction, air cooling, embedded EtherNet/IP, and MCC-style installation makes it a substantial industrial motor-control platform.

For new projects, however, its discontinued status should be taken seriously. The correct approach is to use the original AN0 catalog number for identification of existing equipment while evaluating the current replacement configuration for new procurement.