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Allen-Bradley 20G11LF1K4JN0NNNNN

PowerFlex 755 High-Power Air-Cooled AC Drive — Detailed Product Description, Technical Parameters, Applications, Advantages and Related Models

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1. Product Overview

The 20G11LF1K4JN0NNNNN is a high-power variable frequency AC drive belonging to the PowerFlex 755 product family.

It is designed for large three-phase industrial motors where conventional motor starting is not sufficient and accurate variable-speed control is required.

This model is a 690 VAC, three-phase, 1400 A air-cooled AC drive. It is designed for very large motor applications and provides power ratings of approximately 1500 kW for Light Duty, 1400 kW for Normal Duty, and 1120 kW for Heavy Duty.

The drive uses a Frame 10 construction and an 800 mm deep MCC-style installation format.

It includes embedded EtherNet/IP communication capability, AC input with precharge, DC terminals, filtering, and an installed common-mode jumper configuration.

The product is particularly appropriate for large pumps, fans, blowers, conveyors, compressors, crushers, mixers and other high-power rotating equipment.

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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 Variable Frequency AC Drive
Model	20G11LF1K4JN0NNNNN
Drive Construction	Air Cooled
Frame	Frame 10
Input Voltage	690 VAC
Input Phase	Three Phase
Rated Current	1400 A
Light-Duty Rating	1500 kW
Normal-Duty Rating	1400 kW
Heavy-Duty Rating	1120 kW
Enclosure	Type 1 / IP20
Installation Style	MCC Style
Enclosure Depth	800 mm
Input Type	AC Input with Precharge
DC Terminals	Included
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	None
HIM	Blank / No HIM
Cooling	Forced-Air / Air Cooled
Communication	Embedded EtherNet/IP

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3. Main Technical Parameters

Parameter	20G11LF1K4JN0NNNNN
Catalog Number	20G11LF1K4JN0NNNNN
Product Family	PowerFlex 750-Series
Product Series	PowerFlex 755
Drive Type	Variable Frequency AC Drive
Input Voltage	690 VAC
Input Phase	3 Phase
Rated Current	1400 A
Light-Duty Power	1500 kW
Normal-Duty Power	1400 kW
Heavy-Duty Power	1120 kW
Frame Size	Frame 10
Cooling	Forced-Air / Air Cooled
Input Arrangement	AC Input with Precharge
DC Terminals	Yes
Enclosure	Type 1 / IP20
Installation	800 mm Deep MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Approx. Reference Weight	Approx. 113.4 kg class
Weight (kg)	Approx. 113.4 kg, configuration-dependent
Filtering	Yes
CM Jumper	Installed
Dynamic Braking	None
Human Interface Module	None / Blank
Communication	Embedded EtherNet/IP
Motor Type	Large Three-Phase AC Motor
Application Class	Megawatt-Class Industrial Motor Control

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4. Electrical Rating

The most important specification of the 20G11LF1K4JN0NNNNN is its 1400 A current rating.

This is a very large current capacity and places the drive in the high-power industrial category.

The drive is designed for a 690 VAC three-phase supply.

Its approximate duty ratings are:

Duty Classification	Power Rating
Light Duty	1500 kW
Normal Duty	1400 kW
Heavy Duty	1120 kW

These different ratings are important because industrial loads do not all place the same electrical and thermal demands on a drive.

A pump or fan with relatively smooth loading can often be evaluated using a different duty category than a crusher, conveyor or mixer that experiences frequent overload conditions.

The final selection should therefore be based on the motor’s actual full-load current and the application’s overload profile rather than using motor kW alone.

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5. Light-Duty Rating

The Light-Duty rating is approximately 1500 kW.

This rating is suitable for large motors operating under relatively moderate overload conditions.

Typical examples include:

• Large centrifugal pumps
• Large industrial fans
• Ventilation blowers
• Cooling-water systems
• Process circulation systems
• Large air-handling systems
• Water-transfer equipment

The 1500 kW rating makes this drive suitable for applications where motor power approaches the upper end of the megawatt range.

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6. Normal-Duty Rating

The Normal-Duty rating is approximately 1400 kW.

Normal-Duty operation is appropriate for applications where the motor operates continuously or for extended periods with moderate loading and limited overload requirements.

Typical applications include:

• Large pumps
• Large fans
• Blowers
• Process equipment
• Conveyor systems
• Industrial machinery

The actual motor current should always be compared with the drive rating before final selection.

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7. Heavy-Duty Rating

The Heavy-Duty rating is approximately 1120 kW.

Heavy-Duty applications generally involve greater starting torque, mechanical inertia, load fluctuations or overload requirements.

Typical applications may include:

• Large conveyors
• Crushers
• Heavy mixers
• Mining machinery
• Material-handling equipment
• Bulk-material processing equipment
• High-inertia machines

The lower Heavy-Duty power rating is normal because the drive must accommodate more demanding thermal and overload conditions.

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8. Input Voltage

The drive is designed for a 690 VAC three-phase system.

The 690 VAC voltage class is particularly useful in large industrial installations.

At a given motor power, increasing motor voltage can reduce the current required by the motor compared with an equivalent-power motor operating at a lower voltage.

This can have an effect on:

• Motor feeder sizing
• Cable selection
• Switchgear
• Transformers
• Electrical distribution equipment
• Motor connections
• Overall plant electrical architecture

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9. Current Rating

The drive has a 1400 A rating.

This is one of its defining characteristics.

A 1400 A drive is intended for very large motor systems and is considerably larger than the drives normally used for small or medium machinery.

The high current capability allows the drive to handle large motor loads while maintaining variable-speed control.

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10. Physical Dimensions

The catalog configuration specifies an 800 mm deep MCC-style construction.

The exact width and height can depend on the final physical arrangement, enclosure configuration and installation design.

Therefore, it is better to distinguish the confirmed cabinet depth from dimensions that need to be checked against the final mechanical drawing.

Mechanical Parameter	Specification
Frame	Frame 10
Installation Type	MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Enclosure	Type 1 / IP20
Cooling	Forced Air
Mounting	Industrial MCC Installation
Service Clearance	Installation-dependent
Cable Entry	Configuration-dependent
Overall Footprint	Configuration-dependent
Weight (kg)	Approx. 113.4 kg class; verify final configuration

For cabinet layout, lifting and transportation, the final dimensional drawing for the exact assembled unit should be treated as the controlling information.

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11. Weight

The product is a large-frame industrial drive, so mechanical handling must be considered during installation.

A reference weight in the 113.4 kg class can be used for general planning, but the actual delivered equipment weight can vary depending on the physical configuration and packaging.

Weight Item	Specification
Product Type	High-Power AC Drive
Frame	Frame 10
Reference Weight	Approx. 113.4 kg
Weight (kg)	Approx. 113.4 kg
Final Assembly Weight	Configuration-dependent
Shipping Weight	May be higher than equipment weight
Cabinet / Auxiliary Equipment	May add additional weight
Lifting Equipment	Select according to actual final weight

For transportation, crane selection, floor loading and final installation, the actual equipment label and packing information should be checked.

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12. Enclosure and Installation

The drive uses a Type 1 / IP20 enclosure arrangement and an 800 mm deep MCC-style construction.

This means it is intended for installation within a suitable industrial electrical environment rather than direct outdoor exposure.

The installation location should provide:

• Adequate ventilation
• Appropriate ambient temperature
• Protection from excessive dust
• Protection from moisture
• Adequate service space
• Correct grounding
• Appropriate cable routing
• Suitable electrical isolation
• Sufficient airflow

Because this is a high-power air-cooled drive, heat management is especially important.

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13. Cooling System

The drive uses forced-air cooling.

High-power semiconductor devices generate heat during operation.

The cooling system removes this heat and helps keep the power electronics within their permitted operating temperature.

The installation should therefore provide adequate airflow around the equipment.

Important considerations include:

Cooling Consideration	Importance
Airflow	Very High
Ambient Temperature	Very High
Ventilation	Very High
Dust Control	High
Fan Maintenance	High
Air Intake Clearance	High
Exhaust Clearance	High
Cabinet Arrangement	High

Blocked airflow, excessive ambient temperature or heavy dust accumulation can reduce equipment reliability.

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14. Input Configuration

The 20G11LF1K4JN0NNNNN uses an AC input arrangement with precharge.

Precharge is important in a high-power drive because the DC-link capacitors require controlled charging when the drive is energized.

The general power conversion path is:

690 VAC Three-Phase Input

↓

AC Input / Precharge

↓

Rectifier

↓

DC Link

↓

Inverter

↓

Variable-Frequency AC Output

↓

Large Industrial Motor

The inverter section controls motor voltage and frequency to achieve the required operating speed.

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15. DC Terminals

The product configuration includes DC terminals.

DC terminals provide flexibility for certain system architectures and can be useful in applications involving common DC bus arrangements or related power configurations.

The exact DC-bus application should be evaluated according to the complete system architecture.

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16. Filtering

The drive uses a filtered configuration.

Filtering is useful in high-power electronic systems because switching devices naturally produce high-frequency electrical components.

Proper filtering can help with:

• Electromagnetic compatibility
• Electrical noise reduction
• System integration
• Power quality management
• Control-system reliability

The drive should still be installed with suitable grounding, cable routing and motor-cable practices.

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17. CM Jumper Installed

The catalog configuration specifies that the CM jumper is installed.

Common-mode configuration affects the relationship between the drive’s electrical system and ground.

This is an important consideration in large motor installations because common-mode voltage and leakage-current behavior can affect:

• Motor insulation
• Cable systems
• Grounding
• Electrical noise
• Bearing currents
• System EMC behavior

The selected configuration should match the electrical distribution and grounding arrangement of the plant.

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18. Communication Capability

The product includes embedded EtherNet/IP capability.

This allows the drive to be integrated into industrial control networks.

Typical information that can be exchanged includes:

Data	Example Function
Start Command	Start the motor
Stop Command	Stop the motor
Speed Reference	Set target speed
Actual Speed	Monitor motor speed
Output Current	Monitor load
Output Frequency	Monitor operating frequency
Drive Status	Determine operating state
Warning	Identify warning conditions
Fault	Identify trip conditions
Reset Command	Clear eligible faults
Diagnostic Information	Support troubleshooting

This makes the drive suitable for automated production systems rather than isolated manual motor control.

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19. Product Introduction

The 20G11LF1K4JN0NNNNN is designed for industrial applications in which a very large AC motor must operate at controlled and adjustable speeds.

Instead of running a motor continuously at a fixed speed, a variable frequency drive allows the motor speed to be adjusted according to the process requirement.

For example, a large pump may need full flow during one operating period and substantially lower flow during another.

A large ventilation fan may not need maximum airflow continuously.

A conveyor may need to operate at different speeds depending on material flow.

A crusher may require controlled acceleration before the mechanical load is introduced.

A large mixer may require a controlled ramp-up to reduce mechanical stress.

The drive provides the electrical control platform necessary for these applications.

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20. Major Product Advantages

20.1 Very High Current Capacity

The 1400 A current rating allows the drive to control extremely large motors.

This makes it appropriate for high-power industrial installations.

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20.2 Megawatt-Class Power

With a Light-Duty rating of approximately 1500 kW, the drive belongs to the megawatt-class motor-control category.

This makes it suitable for large industrial equipment where smaller drives cannot provide sufficient current.

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20.3 690 VAC Platform

The 690 VAC voltage class is particularly suitable for large motors.

It can reduce current requirements compared with lower-voltage systems at equivalent power levels.

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20.4 Variable-Speed Control

The motor does not need to operate continuously at full speed.

The drive can adjust operating speed according to the process.

This is valuable for:

• Pumps
• Fans
• Blowers
• Conveyors
• Compressors
• Process machines

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20.5 Controlled Acceleration

Large motors can have significant mechanical inertia.

Controlled acceleration helps bring the motor up to speed gradually.

This can reduce mechanical shock on:

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

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20.6 Improved Process Control

The drive allows motor speed to become part of the overall process-control strategy.

This can improve:

• Flow control
• Pressure control
• Conveyor speed
• Airflow
• Production rate
• Machine synchronization

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20.7 Industrial Network Integration

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

The drive can exchange control commands and operating information with a supervisory control system.

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20.8 Diagnostic Capability

Large industrial equipment benefits from clear operating and fault information.

The drive can provide information relating to:

• Operating status
• Motor speed
• Current
• Frequency
• Warnings
• Faults
• Communication
• Diagnostics

This can reduce troubleshooting time.

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21. Application: Large Pump Systems

Large pump systems are an important application for this type of drive.

A pump does not always need to operate at maximum speed.

By controlling motor speed, the drive can allow pump output to follow the actual process requirement.

Potential applications include:

• Water transfer
• Cooling-water systems
• Industrial process water
• Wastewater systems
• Mining dewatering
• Large circulation systems
• Irrigation
• Industrial fluid handling

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22. Application: Large Fans

Large industrial fans can require hundreds or thousands of kilowatts.

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

Potential applications include:

• Mining ventilation
• Furnace ventilation
• Industrial exhaust
• Dust collection
• Process ventilation
• Cooling systems
• Large air-handling installations

Variable-speed control can be particularly valuable where airflow requirements change significantly throughout the production process.

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23. Application: Large Conveyors

Large conveyors can contain substantial mechanical inertia.

A controlled motor ramp can reduce the mechanical shock associated with starting a large conveyor.

Potential applications include:

• Mining conveyors
• Ore conveyors
• Aggregate conveyors
• Cement conveyors
• Bulk-material conveyors
• Long-distance material-handling systems

The drive can also allow conveyor speed to be coordinated with upstream and downstream equipment.

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24. Application: Crushers

Large crushers can experience substantial changes in mechanical load.

A crusher may require considerable torque during certain stages of operation.

The Heavy-Duty rating of approximately 1120 kW makes the drive a potential candidate for demanding applications where the actual motor current and overload characteristics fall within the drive’s limits.

Possible applications include:

• Primary crushers
• Secondary crushers
• Aggregate processing
• Mineral processing
• Cement processing
• Bulk-material processing

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25. Application: Compressors

Large compressors can require significant motor power.

Variable-speed control allows compressor operation to respond to changing process demand.

Potential applications include:

• Industrial compressors
• Process compressors
• Air systems
• Gas-processing systems
• Large production plants

Compressor torque characteristics and minimum operating speed should be checked before final drive selection.

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26. Application: Mixers

Large mixers can require substantial starting torque, particularly when material is already present in the mixing chamber.

The drive can provide controlled acceleration and adjustable operating speed.

Potential industries include:

• Chemical processing
• Cement
• Minerals
• Bulk materials
• Industrial processing
• Manufacturing

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27. Application: Mining

The high current capability makes the drive suitable for consideration in large mining systems.

Potential applications include:

Mining Equipment	Possible Use
Large Conveyor	Variable-speed control
Crusher	High-torque operation
Dewatering Pump	Flow control
Ventilation Fan	Airflow control
Material Handling	Controlled acceleration
Processing Equipment	Process-speed control
Bulk Handling	Speed coordination

Mining installations often require careful consideration of dust, ambient temperature, ventilation, cable systems and mechanical loading.

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28. Application: Cement and Aggregate

Cement and aggregate facilities contain many high-power motors.

Typical equipment includes:

• Crushers
• Conveyors
• Fans
• Blowers
• Pumps
• Mixers
• Process machinery

The drive can be used where variable-speed control and controlled acceleration are required.

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29. Application: Water and Wastewater

Large water-treatment and pumping systems can benefit from variable-speed motor control.

Possible equipment includes:

• Raw-water pumps
• Transfer pumps
• Cooling-water pumps
• Process pumps
• Wastewater pumps
• Sludge systems
• Large ventilation equipment

The drive can adjust pump speed according to pressure, flow or process demand.

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30. Energy Efficiency Considerations

One of the most important reasons for using a variable frequency drive is the ability to match motor speed to the process.

For centrifugal pumps and fans, reducing speed can significantly reduce the power required.

The actual energy savings depend on the application.

Important factors include:

Factor	Importance
Operating Hours	Very High
Load Profile	Very High
Required Flow	Very High
Required Pressure	High
Motor Efficiency	High
Pump/Fan Efficiency	High
Mechanical Efficiency	Medium/High
Existing Control Method	Very High

A variable-speed drive should therefore be evaluated as part of the entire motor and process system rather than as an isolated component.

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31. Motor Selection

The motor should be selected and matched according to its actual electrical characteristics.

Motor Parameter	Importance
Rated Voltage	Must be compatible
Full-Load Current	Primary sizing parameter
Rated Power	Important
Frequency	Important
Rated Speed	Important
Power Factor	Important
Efficiency	Important
Starting Torque	Important
Overload Requirement	Very Important
Insulation System	Important
Cable Length	Important
Operating Speed Range	Very Important

For a drive of this size, motor current is especially important.

A motor should not be selected simply because its kW value appears below the drive’s stated kW rating.

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32. Installation Considerations

The 20G11LF1K4JN0NNNNN should be installed as part of a properly engineered industrial electrical system.

Installation Item	Consideration
Input Voltage	690 VAC
Input Phase	Three Phase
Motor Voltage	Confirm motor nameplate
Motor Current	Confirm motor nameplate
Duty	Confirm LD / ND / HD requirement
Ambient Temperature	Confirm application conditions
Cooling	Provide adequate airflow
Dust	Control excessive contamination
Grounding	Proper grounding required
Motor Cable	Correctly sized
Cable Routing	Follow installation requirements
Cabinet	800 mm deep MCC style
Width	Confirm final drawing
Height	Confirm final drawing
Weight (kg)	Approx. 113.4 kg class; confirm final unit
Service Space	Must be provided
Maintenance Access	Must be provided

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33. Maintenance

Maintenance is especially important for a high-power air-cooled drive.

Recommended maintenance planning should include inspection of:

• Cooling fans
• Air passages
• Electrical connections
• Cabinet ventilation
• Power terminals
• Grounding connections
• Motor cables
• Environmental contamination
• Fault history
• Communication status
• Operating temperature

Dust accumulation can reduce airflow and increase operating temperature.

Loose electrical connections can also create undesirable heating.

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34. Five Same-Series or Closely Related Models

The following models are suitable for comparison within the same high-power PowerFlex 755 family or closely related configuration group.

The exact option suffix can change the factory configuration, so the catalog number should always be checked carefully before substitution.

Model	Series	Voltage	Current	LD Rating	ND Rating	HD Rating	Depth	Weight (kg)
20G11LF1K4JN2NNNNN	PowerFlex 755	690 VAC	1400 A	1500 kW	1400 kW	1120 kW	800 mm	Approx. 113.4 kg class
20G11LF1K4JN4NNNNN	PowerFlex 755	690 VAC	1400 A	1500 kW class	1400 kW	1120 kW	800 mm	Approx. 113.4 kg class
20G11LF1K4AN0NNNNN	PowerFlex 755	690 VAC	1400 A	1500 kW	1400 kW	1120 kW	800 mm	Configuration-dependent
20G11LF1K0AN0NNNNN	PowerFlex 755	690 VAC	1040 A class	1100 kW class	1000 kW class	900 kW class	800 mm class	Configuration-dependent
20G11LF1K0AN2NNNNN	PowerFlex 755	690 VAC	1040 A class	1100 kW class	1000 kW class	900 kW class	800 mm class	Configuration-dependent

The first three models are especially close to the requested 1400 A configuration.

The 1040 A models are useful where the motor current requirement is lower.

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35. Related Model — 20G11LF1K4JN2NNNNN

The 20G11LF1K4JN2NNNNN is a very close configuration to the requested model.

Parameter	20G11LF1K4JN2NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	1400 A
Light Duty	1500 kW
Normal Duty	1400 kW
Heavy Duty	1120 kW
Cooling	Air Cooled
Input	AC Input with Precharge
DC Terminals	Included
Enclosure	Type 1 / IP20
Installation	800 mm MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Weight (kg)	Approx. 113.4 kg class / configuration-dependent
Filtering	Yes
Dynamic Braking	None

This is one of the most logical comparison models when the electrical capacity needs to remain at 1400 A.

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36. Related Model — 20G11LF1K4JN4NNNNN

The 20G11LF1K4JN4NNNNN is another closely related 1400 A configuration.

Parameter	20G11LF1K4JN4NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	1400 A
Light Duty	Approx. 1500 kW
Normal Duty	1400 kW
Heavy Duty	1120 kW
Cooling	Air Cooled
Input	AC Input with Precharge
Enclosure	Type 1 / IP20
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Weight (kg)	Approx. 113.4 kg class
Filtering	Yes
Typical Application	Large Industrial Motors

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37. Related Model — 20G11LF1K4AN0NNNNN

The 20G11LF1K4AN0NNNNN is another 1400 A, 690 VAC PowerFlex 755 configuration.

Parameter	20G11LF1K4AN0NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	1400 A
Light Duty	1500 kW
Normal Duty	1400 kW
Heavy Duty	1120 kW
Cooling	Air Cooled
Input	AC Input with Precharge
DC Terminals	Included
Installation	MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Weight (kg)	Configuration-dependent
Typical Application	Pumps, Fans, Conveyors, Process Machinery

This model is particularly useful when comparing different catalog option configurations within the same electrical power class.

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38. Related Model — 20G11LF1K0AN0NNNNN

The 20G11LF1K0AN0NNNNN provides a lower-current alternative.

Parameter	20G11LF1K0AN0NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	1040 A class
Light Duty	Approx. 1100 kW
Normal Duty	Approx. 1000 kW
Heavy Duty	Approx. 900 kW
Cooling	Air Cooled
Installation	MCC Style
Depth	800 mm class
Width	Configuration-dependent
Height	Configuration-dependent
Weight (kg)	Configuration-dependent
Typical Applications	Pumps, Fans, Conveyors
Main Difference	Lower Current / Lower Power

This model can be considered when the motor current does not require the full 1400 A capacity.

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39. Related Model — 20G11LF1K0AN2NNNNN

The 20G11LF1K0AN2NNNNN is another high-power 1040 A-class configuration.

Parameter	20G11LF1K0AN2NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	1040 A class
Light Duty	Approx. 1100 kW
Normal Duty	Approx. 1000 kW
Heavy Duty	Approx. 900 kW
Cooling	Air Cooled
Installation	MCC Style
Depth	800 mm class
Width	Configuration-dependent
Height	Configuration-dependent
Weight (kg)	Configuration-dependent
Typical Applications	Large Pumps, Fans, Conveyors, Process Equipment

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40. Five Representative Models from the Same Brand

The following models represent commonly encountered products across different size ranges within the same industrial drive portfolio.

They are not direct replacements for the 1400 A high-power model.

They are included as comparison choices for different motor sizes.

Model	Product Series	Voltage Class	Current Class	Typical Application	Dimensions	Weight (kg)
25B-D010N104	PowerFlex 525	480 VAC class	10 A class	Small Pumps / Fans	Compact / Frame-dependent	Configuration-dependent
25B-D017N104	PowerFlex 525	480 VAC class	17 A class	Small / Medium Machinery	Compact / Frame-dependent	Configuration-dependent
25B-D027N114	PowerFlex 525	480 VAC class	27 A class	Medium Machinery	Compact / Frame-dependent	Configuration-dependent
20F11ND077AA0NNNNN	PowerFlex 753	480 VAC class	77 A class	Medium / Large Machinery	Frame-dependent	Configuration-dependent
20G11LF1K0AN2NNNNN	PowerFlex 755	690 VAC	1040 A class	Large Industrial Motors	800 mm class	Configuration-dependent

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41. Model 25B-D010N104

The 25B-D010N104 belongs to the PowerFlex 525 series and is intended for much smaller motor applications than the 20G11LF1K4JN0NNNNN.

It is suitable for compact machinery where a very high-power drive is unnecessary.

Parameter	25B-D010N104
Series	PowerFlex 525
Voltage Class	480 VAC class
Current Class	10 A class
Drive Type	Compact AC Drive
Typical Motor Size	Small Industrial Motor
Typical Applications	Pumps, Fans, Conveyors
Dimensions	Compact / Frame-dependent
Weight (kg)	Configuration-dependent
Cooling	Configuration-dependent
Installation	Compact Industrial Installation

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42. Model 25B-D017N104

The 25B-D017N104 provides a higher current class than the previous compact model.

Parameter	25B-D017N104
Series	PowerFlex 525
Voltage Class	480 VAC class
Current Class	17 A class
Drive Type	Compact AC Drive
Typical Applications	Pumps, Fans, Conveyors
Dimensions	Compact / Frame-dependent
Weight (kg)	Configuration-dependent
Cooling	Configuration-dependent
Installation	Compact Industrial Installation

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43. Model 25B-D027N114

The 25B-D027N114 is another compact-drive configuration for medium-size machinery.

Parameter	25B-D027N114
Series	PowerFlex 525
Voltage Class	480 VAC class
Current Class	27 A class
Drive Type	Compact Variable Frequency Drive
Typical Applications	Pumps, Fans, Conveyors, Process Machines
Dimensions	Compact / Frame-dependent
Weight (kg)	Configuration-dependent
Cooling	Configuration-dependent
Installation	Compact Industrial Installation

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44. Model 20F11ND077AA0NNNNN

The 20F11ND077AA0NNNNN belongs to the PowerFlex 753 family.

It is intended for substantially smaller motor applications than the 1400 A PowerFlex 755.

Parameter	20F11ND077AA0NNNNN
Series	PowerFlex 753
Voltage Class	480 VAC class
Current Class	77 A class
Drive Type	Industrial AC Drive
Typical Applications	Pumps, Fans, Conveyors
Dimensions	Frame-dependent
Weight (kg)	Frame-dependent
Cooling	Air Cooled / Configuration-dependent
Installation	Industrial Drive Installation
Application Level	Medium Industrial Machinery

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45. Model 20G11LF1K0AN2NNNNN

The 20G11LF1K0AN2NNNNN is the closest model among the five broader brand comparisons.

It remains within the PowerFlex 755 family and the 690 VAC high-power category.

Parameter	20G11LF1K0AN2NNNNN
Series	PowerFlex 755
Voltage	690 VAC
Current	1040 A class
Light Duty	Approx. 1100 kW
Normal Duty	Approx. 1000 kW
Heavy Duty	Approx. 900 kW
Cooling	Air Cooled
Input	AC Input with Precharge
Installation	MCC Style
Depth	800 mm class
Width	Configuration-dependent
Height	Configuration-dependent
Weight (kg)	Configuration-dependent
Typical Application	Large Industrial Motor Systems

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46. High-Power Model Comparison

Specification	20G11LF1K0AN0NNNNN	20G11LF1K0AN2NNNNN	20G11LF1K4JN0NNNNN	20G11LF1K4JN2NNNNN	20G11LF1K4JN4NNNNN
Series	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755
Voltage	690 VAC	690 VAC	690 VAC	690 VAC	690 VAC
Current	1040 A class	1040 A class	1400 A	1400 A	1400 A
Light Duty	1100 kW class	1100 kW class	1500 kW	1500 kW	1500 kW
Normal Duty	1000 kW class	1000 kW class	1400 kW	1400 kW	1400 kW
Heavy Duty	900 kW class	900 kW class	1120 kW	1120 kW	1120 kW
Cooling	Air	Air	Air	Air	Air
Installation	MCC	MCC	MCC	MCC	MCC
Depth	800 mm class	800 mm class	800 mm	800 mm	800 mm
Width	Configuration-dependent	Configuration-dependent	Configuration-dependent	Configuration-dependent	Configuration-dependent
Height	Configuration-dependent	Configuration-dependent	Configuration-dependent	Configuration-dependent	Configuration-dependent
Weight (kg)	Configuration-dependent	Configuration-dependent	Approx. 113.4 kg class	Approx. 113.4 kg class	Approx. 113.4 kg class

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47. Duty-Class Comparison

Application Type	Typical Duty Consideration
Large Centrifugal Pump	Light / Normal Duty depending on process
Large Fan	Light / Normal Duty
Large Blower	Light / Normal Duty
Large Conveyor	Normal / Heavy Duty
Crusher	Heavy Duty
Large Mixer	Heavy Duty
Mining Equipment	Normal / Heavy Duty
Process Machinery	Normal Duty
Large Compressor	Application-dependent
High-Inertia Machine	Heavy Duty may be required

The actual duty class should always be selected according to the motor current and load profile.

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48. Key Advantages for Industrial Users

The 20G11LF1K4JN0NNNNN offers several advantages when used in a properly engineered high-power motor system.

High Current Capacity

The 1400 A rating makes the product suitable for extremely large motors.

High Power Capability

The 1500 kW Light-Duty capability places it in the megawatt-class category.

690 VAC Compatibility

The high-voltage motor class is suitable for large industrial installations.

Variable-Speed Control

Motor speed can be adjusted according to actual process requirements.

Controlled Starting

Large machines can accelerate gradually.

Industrial Communication

Embedded EtherNet/IP allows integration into automated production systems.

Air-Cooled Construction

Forced-air cooling provides a practical arrangement for large industrial electrical rooms.

Flexible Application Range

The same general platform can be used in pumps, fans, conveyors, crushers, compressors and process machinery.

Diagnostic Information

Operating and fault information can assist maintenance personnel.

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49. Recommended Application Selection

The product is especially appropriate when most of the following conditions are present:

• Motor voltage is around 690 VAC.
• Motor current approaches the 1400 A class.
• Motor power is in the megawatt range.
• Variable-speed control is required.
• Controlled acceleration is beneficial.
• The application requires industrial network integration.
• The electrical room can accommodate an 800 mm deep MCC-style drive.
• Adequate forced-air cooling can be provided.
• The process requires a high-power industrial drive rather than a compact motor controller.

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50. Product Selection Checklist

Before purchasing or installing the 20G11LF1K4JN0NNNNN, the following points should be checked against the actual project.

Item	Check
Motor Voltage	Confirm 690 VAC compatibility
Motor Current	Confirm actual full-load current
Motor Power	Compare with duty rating
Motor Frequency	Confirm required frequency
Motor Speed	Confirm speed range
Load Type	Determine torque characteristics
Starting Torque	Confirm requirement
Overload	Confirm required duty
Acceleration	Determine required ramp
Deceleration	Determine required ramp
Braking	Determine whether external braking is required
Motor Cable	Confirm cable specification
Grounding	Confirm system grounding
Ambient Temperature	Confirm operating environment
Altitude	Evaluate if applicable
Ventilation	Confirm airflow
Cabinet Space	Confirm 800 mm depth
Width	Confirm final mechanical drawing
Height	Confirm final mechanical drawing
Weight (kg)	Confirm actual equipment weight
Communication	Confirm required network
Maintenance Space	Provide adequate access

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51. Overall Technical Summary

Category	20G11LF1K4JN0NNNNN
Brand	Allen-Bradley
Family	PowerFlex 750-Series
Series	PowerFlex 755
Type	High-Power AC Variable Frequency Drive
Input Voltage	690 VAC
Input	Three Phase
Current	1400 A
Light Duty	1500 kW
Normal Duty	1400 kW
Heavy Duty	1120 kW
Frame	10
Cooling	Forced Air / Air Cooled
Enclosure	Type 1 / IP20
Installation	800 mm Deep MCC Style
Depth	800 mm
Width	Configuration-dependent
Height	Configuration-dependent
Weight (kg)	Approx. 113.4 kg class; verify final configuration
Input Type	AC Input with Precharge
DC Terminals	Yes
Filtering	Yes
CM Jumper	Installed
Dynamic Braking	None
Communication	Embedded EtherNet/IP
HIM	Blank / No HIM
Typical Loads	Pumps, Fans, Conveyors, Crushers, Compressors, Mixers
Application Level	Megawatt-Class Industrial Motor Control

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52. Final Product Assessment

The 20G11LF1K4JN0NNNNN is a high-power PowerFlex 755 variable frequency drive intended for very large three-phase AC motors.

Its combination of 690 VAC input, 1400 A current capacity, 1500 kW Light-Duty capability, 1400 kW Normal-Duty capability and 1120 kW Heavy-Duty capability makes it suitable for some of the largest industrial motor applications.

The product is particularly valuable where a large motor must not simply run at a fixed speed.

For pumps and fans, variable-speed control can help match motor operation to process demand.

For conveyors and other heavy machinery, controlled acceleration can reduce mechanical shock.

For crushers and mixers, the high current capacity and Heavy-Duty capability can be useful when the mechanical load changes significantly.

For automated plants, embedded EtherNet/IP provides a practical method of integrating drive control and monitoring into the larger industrial control architecture.

The 800 mm deep MCC-style format should be considered during cabinet design and electrical-room planning.

The product’s physical width and height depend on the actual configuration, while the reference weight is in the approximately 113.4 kg class. For lifting, transport, floor loading and final mechanical design, the exact delivered configuration should be checked.

Overall, the 20G11LF1K4JN0NNNNN can be regarded as a 690 VAC, 1400 A, megawatt-class industrial AC drive for large motor applications, with strong suitability for pumping, ventilation, conveying, mining, material handling, crushing, processing and other demanding industrial applications.