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Allen-Bradley 20G1ABF330JN0NNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1ABF330JN0NNNNN is a high-power air-cooled AC variable frequency drive belonging to the PowerFlex 755 series and the broader PowerFlex 750-Series family.

It is designed for large industrial motor applications where high output power, high current capacity, reliable variable-speed operation, networked control, controlled acceleration, and centralized automation are required.

The 20G1ABF330JN0NNNNN is a 690 VAC, three-phase, 330 A drive using a Frame 8 mechanical platform.

Its principal power ratings are approximately 355 kW Low Duty, 315 kW Normal Duty, and 250 kW Heavy Duty.

The drive uses forced-air cooling, AC input with precharge, no DC terminals, filtered EMC configuration, CM jumper installed, embedded EtherNet/IP, and a blank/no-HIM configuration. 

This model is particularly appropriate for large industrial machinery rather than compact equipment.

Typical applications include large pumps, fans, blowers, conveyors, crushers, material-handling equipment, mining machinery, cement equipment, water-treatment systems, and large process machines.

The JN0 configuration is also attractive for centralized automation systems because the drive is supplied without a local HIM.

In a typical installation, the operator interface can instead be provided by a PLC, HMI, SCADA system, DCS, or other plant-level control system through the integrated EtherNet/IP connection.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Product Type	High-Power AC Variable Frequency Drive
Catalog Number	20G1ABF330JN0NNNNN
Product Configuration	Air-Cooled PowerFlex 755 AC Drive
Voltage Class	690 VAC
Phase	3 Phase
Output Current	330 A
Frame Size	Frame 8
Cooling	Forced Air
Mechanical Style	600 mm Deep MCC Style
Enclosure	Type 1
Protection	IP20
Communication	Embedded EtherNet/IP
Input Type	AC Input with Precharge
DC Terminals	None
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
HIM	Blank / No HIM
Lifecycle Status	Active

The current product description identifies the 20G1ABF330JN0NNNNN as an active PowerFlex 755 air-cooled drive with embedded EtherNet/IP, 690 VAC three-phase operation, 330 A output, Frame 8 construction, 600 mm deep MCC-style mechanical construction, filtered configuration, CM jumper installed, no dynamic braking, and no HIM. 

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3. Main Technical Specifications

Parameter	Specification
Model / Catalog Number	20G1ABF330JN0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Drive Type	AC Variable Frequency Drive
Rated Voltage	690 VAC
Input Phase	3 Phase
Output Current	330 A
Low Duty Rating	355 kW
Normal Duty Rating	315 kW
Heavy Duty Rating	250 kW
Approx. Low Duty Horsepower	476 HP
Approx. Normal Duty Horsepower	422 HP
Approx. Heavy Duty Horsepower	335 HP
Frame	Frame 8
Cooling	Forced Air
Input Configuration	AC Input with Precharge
DC Terminals	None
EMC Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
Communication	Embedded EtherNet/IP
HIM	Blank / No HIM
Enclosure	Type 1
Protection Rating	IP20
Mechanical Style	600 mm Deep MCC Style
Approx. Height	~2100 mm
Approx. Width	~610 mm
Approx. Depth	~600 mm
Approx. Overall Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg
Main Application	Large Industrial Motor Control
Typical Loads	Pumps, Fans, Blowers, Conveyors, Crushers, Process Machinery

The core electrical configuration is 330 A at 690 VAC, with 355 kW Low Duty, 315 kW Normal Duty, and 250 kW Heavy Duty ratings. The current catalog configuration is identified as Frame 8 with forced-air cooling and no dynamic braking. 

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4. Product Introduction

The 20G1ABF330JN0NNNNN is a large industrial variable frequency drive designed to control high-power three-phase AC motors.

Compared with compact drives intended for small machinery, this model is physically large and electrically substantial.

Its 330 A output capability makes it suitable for motors that require considerably more current than typical compact or mid-size variable frequency drives can provide.

The 690 VAC voltage class further positions the model toward large industrial installations.

Typical installations can include centralized electrical rooms, motor control centers, large process plants, mining facilities, water-treatment plants, cement facilities, manufacturing plants, and large material-handling systems.

The PowerFlex 755 architecture is intended to provide a combination of motor-control capability, communication, application flexibility, and industrial installation options.

The 20G1ABF330JN0NNNNN is particularly suitable where the drive needs to become part of a larger automated system rather than operating as an isolated motor controller.

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5. 690 VAC Voltage Class

The 690 VAC rating is one of the most important characteristics of this drive.

Large industrial motors require substantial electrical power.

As motor power increases, electrical current also becomes an important design consideration.

A higher motor voltage can reduce the current required for a given power level compared with a lower-voltage motor system.

This can influence the design of:

• Motor cables.
• Switchgear.
• Protection equipment.
• Transformers.
• Bus systems.
• MCC equipment.
• Motor feeders.
• Electrical distribution systems.

The 690 VAC class therefore makes the 20G1ABF330JN0NNNNN particularly suitable for large industrial motors.

It is not normally selected simply because a project requires variable-speed operation.

It is selected when the motor, voltage system, current requirement, and application profile all correspond to the capabilities of the drive.

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6. 330 A Output Current

The drive provides a 330 A output current rating.

This places the unit in the high-power industrial drive category.

A 330 A drive can be used with substantial motors, but final selection should always be based on actual motor current rather than horsepower alone.

Important selection parameters include:

• Motor nameplate current.
• Motor rated voltage.
• Motor rated frequency.
• Motor power.
• Continuous torque.
• Starting torque.
• Acceleration torque.
• Load inertia.
• Operating speed range.
• Overload requirements.
• Duty cycle.
• Ambient temperature.
• Installation altitude.

A motor that appears to be within the kW rating may still require a different drive if its actual current or overload characteristics are outside the intended range.

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7. Power Ratings

The model provides three important power classifications.

Duty Classification	Power Rating	Approx. Horsepower
Low Duty	355 kW	~476 HP
Normal Duty	315 kW	~422 HP
Heavy Duty	250 kW	~335 HP

These ratings allow the drive to be matched to different load characteristics.

The largest kW number should not automatically be used as the motor rating for every application.

The correct rating depends on the motor duty and the mechanical load.

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8. Low Duty – 355 kW

The 355 kW Low Duty rating represents the highest listed power rating for this drive configuration.

Low Duty operation is generally associated with applications where the load does not require the same level of overload capability as a heavy industrial constant-torque application.

Typical examples include:

• Large centrifugal pumps.
• Large fans.
• Ventilation systems.
• Certain blowers.
• Variable-torque machinery.

The 355 kW rating provides considerable capacity for these applications.

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9. Normal Duty – 315 kW

The 315 kW Normal Duty rating is appropriate for many conventional industrial motor applications.

It can be considered for:

• Pumps.
• Conveyors.
• Fans.
• Blowers.
• Process machinery.
• Material-handling equipment.
• General industrial rotating equipment.

The Normal Duty rating is often a useful reference when evaluating a continuously operating motor with a relatively predictable load profile.

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10. Heavy Duty – 250 kW

The 250 kW Heavy Duty rating is intended for more demanding applications.

Heavy Duty applications may involve:

• High starting torque.
• High acceleration torque.
• Frequent load changes.
• High mechanical inertia.
• Repeated acceleration and deceleration.
• Constant-torque loads.

Typical examples may include:

• Crushers.
• Heavy conveyors.
• Mixers.
• Certain process machines.
• High-inertia rotating equipment.

The actual application must be checked against the specified overload and duty requirements before selecting the drive.

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11. Frame 8 Construction

The 20G1ABF330JN0NNNNN uses a Frame 8 construction.

Frame 8 is intended for high-power industrial applications.

The physical dimensions are substantially larger than those of compact variable frequency drives.

For preliminary engineering purposes, the approximate equipment envelope can be considered:

2100 mm × 610 mm × 600 mm

with an approximate complete-drive weight of:

634 kg.

These figures should be treated as approximate engineering values.

The final installation should use the dimensional drawings and equipment documentation corresponding to the actual configuration.

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12. Dimensions and Weight

Mechanical Parameter	Approximate Specification
Model	20G1ABF330JN0NNNNN
Frame	Frame 8
Height	~2100 mm
Width	~610 mm
Depth	~600 mm
Overall Dimensions	~2100 × 610 × 600 mm
Approximate Weight	~634 kg
Mechanical Style	600 mm Deep MCC Style
Cooling	Forced Air
Enclosure	Type 1
Protection	IP20

The product is specifically identified as a 600 mm deep MCC-style Frame 8 drive. 

For final structural design, transportation, lifting, and floor-loading calculations, the actual equipment drawing and shipment configuration should be used instead of relying only on the approximate dimensions above.

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13. Air-Cooled / Forced-Air Design

The drive uses forced-air cooling.

At a power level of several hundred kilowatts, thermal management is a major engineering consideration.

The forced-air design provides a practical method of removing heat from the drive.

One major advantage is that a separate liquid-cooling loop is not required for normal operation.

There is no dedicated external coolant pump.

There is no external coolant reservoir.

There is no separate liquid heat exchanger required for standard drive cooling.

This can simplify installation and maintenance.

However, forced-air cooling means that the electrical room or cabinet environment must provide sufficient ventilation.

The cooling-air intake and exhaust paths should remain unobstructed.

Hot air should not be allowed to circulate back into the drive intake.

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14. AC Input With Precharge

The 20G1ABF330JN0NNNNN uses an AC input with precharge configuration.

A high-power AC drive contains significant DC-bus capacitance.

When the drive is initially energized, the internal DC bus must be charged.

The precharge system controls this charging process.

This helps avoid an uncontrolled initial charging event and supports reliable energization of the drive.

For a 330 A high-power drive, controlled precharge is an important part of the input architecture.

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15. No DC Terminals

The standard catalog configuration specifies:

No DC terminals

This means that the standard model is configured around conventional AC input operation.

It should not automatically be treated as a universal common-DC-bus drive.

Applications involving:

• Shared DC buses.
• Regenerative DC systems.
• External DC power.
• Multi-drive DC coupling.
• Specialized energy-storage systems.

require separate engineering evaluation.

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16. Filtered Configuration

The 20G1ABF330JN0NNNNN is supplied with a filtered configuration.

Modern variable frequency drives use high-frequency switching devices.

The switching process creates high-frequency electrical components.

Filtering helps manage electromagnetic interference and contributes to the overall EMC performance of the installation.

However, the drive’s internal filtering is only one part of the complete EMC solution.

The system design should also consider:

• Grounding.
• Shielding.
• Motor-cable construction.
• Motor-cable length.
• Cabinet bonding.
• Cable separation.
• Network cable routing.
• Motor-frame grounding.
• Control-cable routing.

A properly engineered installation is therefore still required.

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17. CM Jumper Installed

The JN0 configuration specifies:

CM Jumper Installed

This is an important distinction between the newer J-series configuration and the older A-series configuration.

A simplified comparison is:

Configuration	CM Jumper
AN0	Removed
JN0	Installed

The J-series configuration is identified as the preferred CM jumper arrangement in the current product description. 

This distinction is particularly important when replacing an older AN-series drive.

A replacement project should review the grounding and EMC arrangement instead of assuming that the new drive is electrically identical in every configuration detail.

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18. Dynamic Braking

The standard configuration specifies:

Dynamic Braking: None

This means the catalog configuration does not include a dynamic braking system.

For many applications, this is not a problem.

Typical examples include:

• Centrifugal pumps.
• Large fans.
• Blowers.
• Certain process pumps.
• Continuous-duty variable-torque equipment.

However, applications requiring rapid stopping or handling significant rotating inertia may require additional braking engineering.

Examples include:

• Crushers.
• Large conveyors.
• Centrifuges.
• Mixers.
• Certain hoisting systems.
• High-inertia machines.

The drive should therefore be selected according to the complete mechanical stopping requirement.

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19. No HIM Configuration

The JN0 suffix corresponds to the no-HIM configuration.

The catalog description identifies the HIM as:

Blank / No HIM

This is particularly suitable for centralized control architectures.

Instead of operating the drive through a local keypad, the plant may use:

• PLC.
• HMI.
• SCADA.
• DCS.
• EtherNet/IP.
• Central control-room equipment.

This configuration is particularly appropriate for large industrial plants where the drive is installed inside an electrical room and operators normally control the process remotely.

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20. Embedded EtherNet/IP

The drive incorporates embedded EtherNet/IP.

This is one of the most important features for modern automation systems.

The drive can communicate operating information with a control system.

Typical information can include:

Data	Typical Function
Start Command	Motor starting
Stop Command	Motor stopping
Speed Reference	Desired motor speed
Actual Speed	Motor feedback
Output Frequency	Operating monitoring
Output Current	Load monitoring
Drive Status	Operating condition
Fault Status	Fault indication
Warning Status	Maintenance indication
Diagnostic Information	Troubleshooting
Command Feedback	Control confirmation

This allows the drive to operate as an integrated component of the plant automation system.

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21. Typical Automation Architecture

A typical installation can be structured as:

PLC

↓

EtherNet/IP Network

↓

20G1ABF330JN0NNNNN

↓

690 VAC Motor

↓

Mechanical Load

The drive can receive commands and speed references from the control system.

It can return status, operating data, warnings, and fault information.

This arrangement is particularly useful in large facilities where several high-power motors are controlled from a central automation system.

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22. Product Applications

22.1 Large Pump Systems

Large pumps are among the most suitable applications for this drive.

Potential applications include:

• Water transfer.
• Process-water circulation.
• Cooling-water systems.
• Wastewater pumping.
• Mining dewatering.
• Industrial fluid transfer.
• Booster pumping.
• Utility pumping.

Variable-speed control allows the pump motor to operate according to the actual process requirement.

This can be preferable to operating the motor continuously at full speed and regulating the process entirely through mechanical throttling.

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23. Large Fan Systems

Large fans can require hundreds of kilowatts.

Potential applications include:

• Furnace fans.
• Exhaust fans.
• Combustion-air fans.
• Cooling fans.
• Dust-collection systems.
• Industrial ventilation.
• Tunnel ventilation.
• Process-air systems.

The drive can adjust fan speed according to the required airflow.

This provides greater process flexibility than fixed-speed operation.

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24. Large Blower Systems

Large blowers can also benefit from variable-speed motor control.

Applications include:

• Wastewater aeration.
• Process-air systems.
• Pneumatic conveying.
• Industrial ventilation.
• Combustion systems.
• Process gas movement.

The 330 A current rating provides considerable capacity for large blower motors.

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25. Conveyor Applications

Large conveyors often require substantial starting torque.

Direct-on-line starting can produce a sudden mechanical load.

A variable frequency drive can accelerate the motor progressively.

Potential benefits include:

• Reduced belt shock.
• Reduced gearbox stress.
• Reduced coupling stress.
• Reduced shaft stress.
• Controlled startup.
• Adjustable conveyor speed.
• Improved process coordination.

This makes the PowerFlex 755 platform particularly suitable for large material-handling systems.

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26. Mining Applications

Mining operations frequently use large motors.

Potential applications include:

• Ore conveyors.
• Crushers.
• Dewatering pumps.
• Ventilation fans.
• Material-handling systems.
• Processing machinery.
• Bulk-material transport.

The combination of 690 VAC operation, high current capacity, network communication, and Frame 8 construction makes this type of drive well suited to large mining equipment.

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27. Cement Applications

Cement plants typically contain a large number of high-power motors.

Potential applications include:

• Crushers.
• Process fans.
• Blowers.
• Conveyors.
• Pumps.
• Feeders.
• Material-handling equipment.
• Cooling systems.

The drive can be integrated into a centralized plant automation network.

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28. Aggregate Applications

Aggregate processing plants often use large motors for:

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

Variable-speed operation can help coordinate material flow through the plant.

The drive’s high-current capacity makes it suitable for large equipment rather than compact processing machinery.

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29. Steel and Metals Applications

Large metal-processing facilities often use high-power motors.

Potential applications include:

• Large pumps.
• Cooling fans.
• Conveyors.
• Material-handling systems.
• Process machinery.
• Ventilation systems.
• Auxiliary equipment.

The 690 VAC configuration is suitable for many large motor installations in these environments.

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30. Water and Wastewater Applications

Large water and wastewater plants can require substantial pump and blower capacity.

Potential applications include:

• Raw-water pumps.
• Transfer pumps.
• Booster pumps.
• Aeration blowers.
• Process pumps.
• Large ventilation equipment.

Variable-speed operation can allow the motor to respond to changing flow and pressure requirements.

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31. Process Machinery

The PowerFlex 755 platform can be used with large process machinery such as:

• Mixers.
• Agitators.
• Large rotating machines.
• Process pumps.
• Blowers.
• Material-processing equipment.
• Large production machinery.

The actual application should be evaluated according to the motor’s torque-speed characteristics and operating cycle.

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32. Main Product Advantages

32.1 High-Voltage 690 VAC Operation

The 690 VAC class makes the drive appropriate for large industrial motor systems.

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32.2 High 330 A Output

The 330 A rating provides substantial motor-control capacity.

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32.3 355 kW Low Duty Capacity

The Low Duty rating supports large variable-torque applications.

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32.4 315 kW Normal Duty Capacity

The Normal Duty rating covers a wide range of large industrial applications.

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32.5 250 kW Heavy Duty Capacity

The Heavy Duty rating provides useful capacity for more demanding load profiles.

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32.6 Frame 8 Construction

Frame 8 provides the physical and thermal platform needed for high-power operation.

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32.7 Embedded EtherNet/IP

Integrated network communication makes centralized automation straightforward.

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32.8 Forced-Air Cooling

The air-cooled architecture avoids the complexity of a dedicated liquid-cooling system.

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32.9 Filtered Configuration

The integrated filtering supports an EMC-conscious installation.

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32.10 No-HIM Configuration

For centralized PLC/HMI/SCADA applications, the no-HIM configuration can be practical and clean.

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33. Mechanical Specifications

Mechanical Parameter	Specification
Model	20G1ABF330JN0NNNNN
Frame	Frame 8
Mechanical Style	600 mm Deep MCC Style
Enclosure	Type 1
Protection	IP20
Cooling	Forced Air
Approx. Height	~2100 mm
Approx. Width	~610 mm
Approx. Depth	~600 mm
Approx. Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg

The catalog description confirms the 600 mm deep MCC-style Frame 8 construction and Type 1/IP20 configuration. 

The dimensions and weight above should be regarded as approximate planning values. The actual mechanical drawing should be used for final installation engineering.

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34. Electrical Specifications

Electrical Parameter	Specification
Model	20G1ABF330JN0NNNNN
Voltage	690 VAC
Phase	3 Phase
Output Current	330 A
Low Duty	355 kW
Normal Duty	315 kW
Heavy Duty	250 kW
Input	AC Input with Precharge
DC Terminals	None
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
Communication	Embedded EtherNet/IP
HIM	Blank / No HIM
Cooling	Forced Air
Frame	Frame 8
Enclosure	Type 1
Protection	IP20

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35. Installation Requirements

The physical size of the drive means installation planning is important.

Before delivery, the following should be considered:

• Electrical-room access.
• Equipment-door dimensions.
• Transportation route.
• Floor loading.
• Lifting equipment.
• Service clearance.
• Cable routing.
• Ventilation.
• Maintenance access.
• Grounding.
• EMC bonding.

The approximate 634 kg equipment weight should also be included in the mechanical installation plan.

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36. Ventilation and Thermal Management

The forced-air cooling system requires adequate airflow.

The installation should prevent:

• Blocked air inlets.
• Blocked air outlets.
• Excessive dust accumulation.
• Hot-air recirculation.
• Excessively high ambient temperature.
• Contaminated cooling air.

The electrical room HVAC system should account for the heat produced by the drive and the other equipment installed nearby.

This is particularly important when multiple Frame 8 drives are installed in the same room.

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37. EMC and Grounding Considerations

The drive’s filtered configuration helps with electromagnetic compatibility, but the overall installation still requires proper engineering.

Important considerations include:

• Protective grounding.
• Motor-frame grounding.
• Cabinet bonding.
• Motor-cable shielding.
• Power/control cable separation.
• Network cable routing.
• Cable termination.
• Motor cable length.
• Electrical-room grounding.

The CM jumper configuration should also be considered when replacing an older A-series drive.

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38. JN0 Configuration Characteristics

The catalog number can be understood as a configuration rather than simply a random sequence of characters.

The important practical characteristics of the JN0 configuration include:

• PowerFlex 755.
• Air cooled.
• 690 VAC.
• 330 A.
• Frame 8.
• Filtered.
• CM jumper installed.
• No dynamic braking.
• No HIM.
• AC input with precharge.
• No DC terminals.

This combination makes the model particularly suitable for large centralized motor-control systems.

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39. JN0 Compared With JN2

Parameter	20G1ABF330JN0NNNNN	20G1ABF330JN2NNNNN
Voltage	690 VAC	690 VAC
Current	330 A	330 A
Low Duty	355 kW	355 kW
Normal Duty	315 kW	315 kW
Heavy Duty	250 kW	250 kW
Frame	8	8
Cooling	Forced Air	Forced Air
EtherNet/IP	Embedded	Embedded
CM Jumper	Installed	Installed
Dynamic Braking	None	None
HIM	No HIM	Enhanced LCD Handheld / Local
Approx. Dimensions	~2100 × 610 × 600 mm	~2100 × 610 × 600 mm
Approx. Weight	~634 kg	~634 kg
Best Application	Centralized Control	Local + Centralized Control

The JN0 version is best suited to installations where local operator access is not necessary.

The JN2 version is more suitable where maintenance technicians need a local interface at the drive.

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40. JN0 Compared With JN4

Parameter	20G1ABF330JN0NNNNN	20G1ABF330JN4NNNNN
Voltage	690 VAC	690 VAC
Current	330 A	330 A
Low Duty	355 kW	355 kW
Normal Duty	315 kW	315 kW
Heavy Duty	250 kW	250 kW
Frame	8	8
Cooling	Forced Air	Forced Air
CM Jumper	Installed	Installed
Dynamic Braking	None	None
HIM	No HIM	Door-Mounted LCD
Approx. Dimensions	~2100 × 610 × 600 mm	~2100 × 610 × 600 mm
Approx. Weight	~634 kg	~634 kg
Main Advantage	Centralized Automation	Permanent Local Interface

The JN4 configuration is particularly useful when operators require a permanent display interface at the front of the equipment.

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41. Recommended Related Model 1 – 20G1ABF330JN2NNNNN

The 20G1ABF330JN2NNNNN is one of the closest alternatives.

It keeps the same fundamental 690 VAC, 330 A electrical platform.

The major difference is the addition of an Enhanced LCD full numeric handheld/local HIM.

Parameter	Specification
Model	20G1ABF330JN2NNNNN
Voltage	690 VAC
Current	330 A
Low Duty	355 kW
Normal Duty	315 kW
Heavy Duty	250 kW
Frame	8
Cooling	Forced Air
HIM	Enhanced LCD Handheld / Local
EtherNet/IP	Embedded
CM Jumper	Installed
Dynamic Braking	None
Approx. Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg

This is the preferred related configuration when local commissioning and maintenance access are important.

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42. Recommended Related Model 2 – 20G1ABF330JN4NNNNN

The 20G1ABF330JN4NNNNN provides the same fundamental electrical rating but uses a door-mounted HIM.

Parameter	Specification
Model	20G1ABF330JN4NNNNN
Voltage	690 VAC
Current	330 A
Low Duty	355 kW
Normal Duty	315 kW
Heavy Duty	250 kW
Frame	8
Cooling	Forced Air
HIM	Door-Mounted LCD
EtherNet/IP	Embedded
CM Jumper	Installed
Dynamic Braking	None
Approx. Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg

This configuration is useful when operators need permanent access to the drive interface.

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43. Recommended Related Model 3 – 20G1ABF265JN0NNNNN

The 20G1ABF265JN0NNNNN is the smaller-current version of the same general 690 VAC family.

Parameter	Specification
Model	20G1ABF265JN0NNNNN
Voltage	690 VAC
Current	265 A
Low Duty	315 kW
Normal Duty	250 kW
Heavy Duty	200 kW
Frame	8
Cooling	Forced Air
HIM	No HIM
EtherNet/IP	Embedded
CM Jumper	Installed
Dynamic Braking	None
Approx. Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg

This model is appropriate when the motor current requirement is lower than the 330 A configuration.

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44. Recommended Related Model 4 – 20G1ABF370JN0NNNNN

The 20G1ABF370JN0NNNNN provides additional current capacity.

Parameter	Specification
Model	20G1ABF370JN0NNNNN
Voltage	690 VAC
Current	370 A
Low Duty	400 kW
Normal Duty	355 kW
Heavy Duty	300 kW
Frame	8
Cooling	Forced Air
HIM	No HIM
EtherNet/IP	Embedded
CM Jumper	Installed
Dynamic Braking	None
Approx. Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg

This is a logical choice when the motor requires more than 330 A.

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45. Recommended Related Model 5 – 20G1ABF415JN0NNNNN

The 20G1ABF415JN0NNNNN provides another step upward in current and power capacity.

Parameter	Specification
Model	20G1ABF415JN0NNNNN
Voltage	690 VAC
Current	415 A
Low Duty	450 kW
Normal Duty	400 kW
Heavy Duty	355 kW
Frame	8
Cooling	Forced Air
HIM	No HIM
EtherNet/IP	Embedded
CM Jumper	Installed
Dynamic Braking	None
Approx. Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg

This model is suitable for applications that exceed the 330 A and 370 A current range.

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46. Five Closely Related Models Comparison

Model	Voltage	Current	LD	ND	HD	Frame	HIM	CM Jumper	Approx. Dimensions	Approx. Weight
20G1ABF265JN0NNNNN	690 VAC	265 A	315 kW	250 kW	200 kW	8	No HIM	Installed	~2100 × 610 × 600 mm	~634 kg
20G1ABF330JN0NNNNN	690 VAC	330 A	355 kW	315 kW	250 kW	8	No HIM	Installed	~2100 × 610 × 600 mm	~634 kg
20G1ABF330JN2NNNNN	690 VAC	330 A	355 kW	315 kW	250 kW	8	Local LCD	Installed	~2100 × 610 × 600 mm	~634 kg
20G1ABF370JN0NNNNN	690 VAC	370 A	400 kW	355 kW	300 kW	8	No HIM	Installed	~2100 × 610 × 600 mm	~634 kg
20G1ABF415JN0NNNNN	690 VAC	415 A	450 kW	400 kW	355 kW	8	No HIM	Installed	~2100 × 610 × 600 mm	~634 kg

These models provide a useful progression around the 330 A configuration.

The 265 A version is the lower-current option.

The 330 A version is the main reference model.

The 370 A and 415 A versions provide additional capacity.

The JN2 version changes the operator-interface arrangement without changing the basic 330 A power platform.

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47. Five Same-Brand Popular Models

The following models provide a broader comparison across the Allen-Bradley variable frequency drive range.

Model	Series	Voltage Class	Current Class	Typical Application	HIM / Interface	Approx. Dimensions	Approx. Weight
25B-D030N114	PowerFlex 525	480 VAC Class	~30 A Class	General Industrial Machinery	Local / Integrated	Compact	Several kg
25C-D030N114	PowerFlex 523	480 VAC Class	~30 A Class	Compact Machinery	Local / Integrated	Compact	Several kg
20G1ABC302JN4NNNNN	PowerFlex 755	480 VAC Class	~302 A	Large Industrial Motors	Door LCD	~2100 × 610 × 600 mm	~600+ kg
20G1ABC460JN4NNNNN	PowerFlex 755	480 VAC Class	~460 A	Large Process Equipment	Door LCD	~2100 × 610 × 600 mm	~600+ kg
20G1ABC650JN4NNNNN	PowerFlex 755	480 VAC Class	~650 A	Heavy Industrial Motors	Door LCD	Large Frame	~600+ kg

The PowerFlex 523 and PowerFlex 525 models are much smaller than the 20G1ABF330JN0NNNNN and are more appropriate for compact machinery.

The PowerFlex 755 models are more closely related in architecture and intended application.

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48. Same-Brand Model Selection Guide

Requirement	Recommended Model
690 VAC, 330 A, no local HIM	20G1ABF330JN0NNNNN
690 VAC, 330 A, handheld/local HIM	20G1ABF330JN2NNNNN
690 VAC, 330 A, door-mounted HIM	20G1ABF330JN4NNNNN
690 VAC, lower current	20G1ABF265JN0NNNNN
690 VAC, 370 A	20G1ABF370JN0NNNNN
690 VAC, 415 A	20G1ABF415JN0NNNNN
Compact 480 VAC drive	25B-D030N114
Compact industrial machine	25C-D030N114
Large 480 VAC motor	20G1ABC302JN4NNNNN
Higher-current 480 VAC motor	20G1ABC460JN4NNNNN
Very large industrial motor	20G1ABC650JN4NNNNN

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49. Comparison With the 265 A Model

Parameter	20G1ABF265JN0NNNNN	20G1ABF330JN0NNNNN
Voltage	690 VAC	690 VAC
Current	265 A	330 A
Low Duty	315 kW	355 kW
Normal Duty	250 kW	315 kW
Heavy Duty	200 kW	250 kW
Frame	8	8
Cooling	Forced Air	Forced Air
HIM	No HIM	No HIM
CM Jumper	Installed	Installed
Dynamic Braking	None	None
EtherNet/IP	Embedded	Embedded
Approx. Dimensions	~2100 × 610 × 600 mm	~2100 × 610 × 600 mm
Approx. Weight	~634 kg	~634 kg

The 330 A model provides a meaningful increase in available current and power compared with the 265 A model.

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50. Comparison With the 370 A Model

Parameter	20G1ABF330JN0NNNNN	20G1ABF370JN0NNNNN
Voltage	690 VAC	690 VAC
Current	330 A	370 A
Low Duty	355 kW	400 kW
Normal Duty	315 kW	355 kW
Heavy Duty	250 kW	300 kW
Frame	8	8
Cooling	Forced Air	Forced Air
HIM	No HIM	No HIM
CM Jumper	Installed	Installed
Dynamic Braking	None	None
EtherNet/IP	Embedded	Embedded
Approx. Dimensions	~2100 × 610 × 600 mm	~2100 × 610 × 600 mm
Approx. Weight	~634 kg	~634 kg

The 370 A version becomes attractive when the actual motor current requirement approaches or exceeds the practical limit of the 330 A model.

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51. Pump Application Advantages

For large pumps, the drive can provide:

• Adjustable motor speed.
• Controlled acceleration.
• Controlled deceleration.
• Flow regulation.
• Pressure regulation.
• Centralized control.
• Current monitoring.
• Fault monitoring.
• Remote operation.
• Process coordination.

The drive can therefore become part of a complete pumping-control system rather than simply acting as an electronic motor starter.

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52. Fan Application Advantages

For large fans, variable-speed control can provide:

• Adjustable airflow.
• Controlled startup.
• Reduced mechanical shock.
• Process optimization.
• Centralized monitoring.
• Remote control.
• Adjustable operating speed.

This makes the drive particularly useful for large industrial ventilation and process-air systems.

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53. Conveyor Application Advantages

For large conveyors, controlled acceleration can reduce mechanical stress.

Potential benefits include:

• Reduced belt shock.
• Reduced gearbox stress.
• Reduced coupling stress.
• Reduced shaft loading.
• Adjustable speed.
• Controlled startup.
• Improved coordination.

These characteristics can be especially useful in mining, cement, aggregate, and bulk-material systems.

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54. Crusher Application Advantages

Crushers can have demanding mechanical load profiles.

The Heavy Duty rating should therefore be carefully evaluated.

The drive’s 250 kW Heavy Duty capability may be suitable for certain crusher applications, provided the actual motor current, overload profile, acceleration requirements, and mechanical cycle remain within the specified operating limits.

Stopping requirements should also be evaluated because the standard configuration has no dynamic braking.

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55. Mining Application Advantages

Mining equipment frequently requires high-power motor control.

The 20G1ABF330JN0NNNNN offers:

• High current capacity.
• 690 VAC operation.
• Variable-speed control.
• Network communication.
• Centralized automation.
• Forced-air cooling.
• Large-frame construction.

These characteristics make it suitable for large mining motor systems.

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56. Cement Plant Application Advantages

Cement plants frequently have large continuous-duty motors.

The drive can be considered for:

• Crushers.
• Conveyors.
• Process fans.
• Blowers.
• Pumps.
• Feeders.
• Material-handling systems.

The embedded network interface can also simplify integration into centralized plant control.

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57. Water and Wastewater Application Advantages

Water and wastewater facilities often need flexible control of large pumps and blowers.

The drive can support:

• Flow control.
• Pressure control.
• Pump speed control.
• Aeration control.
• Soft starting.
• Centralized monitoring.
• Fault indication.

The 690 VAC platform is suitable for large motor installations where substantial power is required.

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58. Maintenance Considerations

The forced-air cooling system should be maintained properly.

Maintenance inspections can include:

• Cooling fans.
• Air passages.
• Ventilation openings.
• Dust accumulation.
• Electrical connections.
• Grounding.
• Network connections.
• Abnormal noise.
• Abnormal vibration.
• Thermal conditions.

Dusty industrial environments deserve particular attention because accumulated contamination can restrict airflow.

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59. Electrical Room Planning

Because the drive is approximately:

2100 mm high × 610 mm wide × 600 mm deep

and weighs approximately:

634 kg

the electrical-room layout should be planned carefully.

Important considerations include:

• Floor loading.
• Equipment access.
• Service clearance.
• Lifting access.
• Ventilation.
• Cable routing.
• Maintenance access.
• Heat dissipation.
• Adjacent equipment clearance.
• Transportation route.

This is especially important when several Frame 8 drives are installed in the same facility.

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60. Why Choose the 330 A Version?

The 330 A configuration occupies a useful position in the 690 VAC PowerFlex 755 range.

It provides more capacity than the 265 A configuration without moving immediately to the larger 370 A or 415 A configurations.

The principal ratings are:

330 A

355 kW Low Duty

315 kW Normal Duty

250 kW Heavy Duty

This makes the model suitable for a broad range of large industrial motors.

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61. Why Choose JN0?

The JN0 configuration is particularly suitable when local operator access is not required.

The control system can manage the drive through EtherNet/IP.

This can be useful when the plant has:

• Central control rooms.
• PLC-based automation.
• SCADA systems.
• DCS systems.
• Remote operator stations.
• Multiple networked drives.

In these installations, a local HIM may not be necessary.

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62. Centralized Automation Advantage

A no-HIM drive can be integrated into a centralized architecture.

For example:

Operator HMI

↓

PLC

↓

EtherNet/IP

↓

PowerFlex 755

↓

Motor

This architecture is common in larger industrial plants because it allows many motors to be supervised from one control system.

The drive can report operating conditions and faults back to the control system.

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63. Local HIM Versus No HIM

Requirement	No HIM	Handheld HIM	Door-Mounted HIM
Central PLC Control	Excellent	Excellent	Excellent
Local Parameter Access	Limited	Excellent	Excellent
Local Troubleshooting	Limited	Excellent	Excellent
Permanent Operator Interface	No	No	Yes
Maintenance Access	Remote Tools	Very Good	Very Good
Typical Model	20G1ABF330JN0NNNNN	20G1ABF330JN2NNNNN	20G1ABF330JN4NNNNN

The JN0 configuration is therefore best suited to centralized automation.

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64. Complete Electrical Parameter Table

Parameter	Detailed Specification
Catalog Number	20G1ABF330JN0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Drive Type	AC Variable Frequency Drive
Voltage	690 VAC
Phase	3 Phase
Output Current	330 A
Low Duty	355 kW
Normal Duty	315 kW
Heavy Duty	250 kW
Approx. LD	476 HP
Approx. ND	422 HP
Approx. HD	335 HP
Input	AC Input with Precharge
DC Terminals	None
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
Communication	Embedded EtherNet/IP
HIM	Blank / No HIM
Cooling	Forced Air
Frame	Frame 8
Enclosure	Type 1
Protection	IP20

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65. Complete Mechanical Parameter Table

Parameter	Specification
Model	20G1ABF330JN0NNNNN
Frame	Frame 8
Mechanical Style	600 mm Deep MCC Style
Cooling	Forced Air
Enclosure	Type 1
Protection	IP20
Approx. Height	~2100 mm
Approx. Width	~610 mm
Approx. Depth	~600 mm
Approx. Overall Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg
Installation Type	Large Industrial / MCC-Oriented Installation
Service Requirement	Adequate Front and Maintenance Clearance
Thermal Requirement	Suitable Forced-Air Ventilation

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66. Final Product Parameter Summary

Category	Specification
Model	20G1ABF330JN0NNNNN
Brand	Allen-Bradley
Family	PowerFlex 750-Series
Series	PowerFlex 755
Voltage	690 VAC
Phase	3 Phase
Current	330 A
LD Power	355 kW
ND Power	315 kW
HD Power	250 kW
Frame	8
Cooling	Forced Air
Input	AC with Precharge
DC Terminals	None
Filter	Filtered
CM Jumper	Installed
Dynamic Braking	None
Communication	Embedded EtherNet/IP
HIM	No HIM
Enclosure	Type 1
IP Rating	IP20
Mechanical Style	600 mm Deep MCC Style
Approx. Dimensions	~2100 × 610 × 600 mm
Approx. Weight	~634 kg
Typical Applications	Pumps, Fans, Blowers, Conveyors, Crushers, Mining, Cement, Water, Process Machinery
Lifecycle	Active

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67. Overall Product Advantages

The Allen-Bradley 20G1ABF330JN0NNNNN is a high-capacity industrial AC drive designed for large motor systems.

Its 690 VAC voltage class allows it to serve high-power motor installations.

Its 330 A output rating provides substantial current capability.

The 355 kW Low Duty, 315 kW Normal Duty, and 250 kW Heavy Duty ratings allow the drive to be matched to different industrial load profiles.

The Frame 8 architecture provides the physical and thermal platform necessary for this power range.

The forced-air cooling system offers a practical high-power cooling arrangement without the additional complexity of a dedicated liquid-cooling system.

The embedded EtherNet/IP interface makes the drive well suited to centralized industrial automation.

The no-HIM configuration is especially useful when the drive is controlled through a PLC, HMI, SCADA, or DCS system.

The filtered configuration supports EMC-conscious installations.

The CM jumper installed configuration corresponds to the preferred J-series arrangement.

The AC input with precharge provides a controlled input architecture suitable for a large industrial AC drive.

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68. Overall Application Suitability

Application	Suitability
Large Centrifugal Pumps	Excellent
Large Industrial Fans	Excellent
Large Blowers	Excellent
Water Treatment Pumps	Excellent
Wastewater Systems	Excellent
Mining Conveyors	Excellent
Cement Conveyors	Excellent
Aggregate Equipment	Excellent
Large Process Pumps	Excellent
Material Handling	Excellent
Large Process Machinery	Excellent
Crushers	Suitable with duty and braking analysis
High-Inertia Machines	Requires application review
Compact Machinery	Generally Excessive
Small Motor Applications	Not Economical

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69. Final Summary

The Allen-Bradley 20G1ABF330JN0NNNNN is a high-power PowerFlex 755 AC variable frequency drive belonging to the PowerFlex 750-Series.

Its main electrical rating is 690 VAC, three-phase, 330 A, with approximately 355 kW Low Duty, 315 kW Normal Duty, and 250 kW Heavy Duty capability. 

The drive uses a Frame 8, 600 mm deep MCC-style construction with forced-air cooling.

Its standard configuration includes embedded EtherNet/IP, AC input with precharge, no DC terminals, filtered EMC configuration, CM jumper installed, no dynamic braking, and no HIM. 

For preliminary mechanical planning, the approximate dimensions are 2100 × 610 × 600 mm, with an approximate weight of 634 kg.

The drive is particularly appropriate for large industrial applications where substantial motor power and current capacity are required.

Typical applications include:

• Large water pumps.
• Process pumps.
• Wastewater pumps.
• Large fans.
• Industrial blowers.
• Mining conveyors.
• Cement conveyors.
• Crushers.
• Aggregate machinery.
• Material-handling systems.
• Process machinery.
• Industrial ventilation.
• Large rotating equipment.

One of the strongest features of the JN0 configuration is its suitability for centralized automation.

Because the drive does not include a local HIM, the control architecture can remain centered around a PLC, HMI, SCADA, DCS, or EtherNet/IP network.

This makes the model particularly suitable for large plants containing multiple high-power drives.

For applications requiring local maintenance access, the 20G1ABF330JN2NNNNN is a natural related choice.

For permanent local operator access, the 20G1ABF330JN4NNNNN is another appropriate configuration.

For lower motor-current requirements, the 20G1ABF265JN0NNNNN provides a smaller 690 VAC alternative.

For higher-current applications, the 20G1ABF370JN0NNNNN and 20G1ABF415JN0NNNNN provide progressively greater current and power capacity.

The most important selection principle is to match the drive to the actual motor nameplate current, duty classification, torque requirements, acceleration profile, braking requirements, ambient conditions, and mechanical load.

Overall, the 20G1ABF330JN0NNNNN is best characterized as a large-frame, high-power, 690 VAC industrial AC drive for centralized motor control.

Its combination of 330 A current capacity, 355/315/250 kW duty ratings, Frame 8 construction, forced-air cooling, embedded EtherNet/IP, filtered configuration, precharged AC input, and no-HIM architecture makes it particularly suitable for demanding industrial motor-control systems.