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1. Product Overview

The Allen-Bradley 20G1G4C1K2JNDNNNNN is a high-power, air-cooled AC drive designed for large industrial motor-control applications. It belongs to the PowerFlex 755T family and is part of the PowerFlex 755TL low-harmonic drive range.

The model is a floor-mounted, Type 12/IP54 packaged drive for 400 VAC, three-phase industrial power systems. Its published rating is 800 kW / 1465 A for Light Duty, 710 kW / 1175 A for Normal Duty, and 560 kW / 1090 A for Heavy Duty. The model is also identified as an air-cooled PowerFlex 755 packaged drive.

This is a drive intended for substantial industrial equipment rather than ordinary machine-level applications. It is suitable for large pumps, fans, compressors, conveyors, crushers, mills, blowers, process equipment, mining machinery, water-treatment systems, cement equipment, and other large motor-driven systems.

2. Brand and Product Series

Item	Description
Brand	Allen-Bradley
Product Family	PowerFlex
Main Series	PowerFlex 755T
Sub-Series	PowerFlex 755TL
Product Type	Low-Harmonic AC Drive
Model	20G1G4C1K2JNDNNNNN
Construction	Air-Cooled Packaged Drive
Input Voltage Class	400 VAC
Input Phase	3 Phase
Mounting	Floor Mount
Enclosure	Type 12 / IP54
Frame	High-Power Packaged Configuration
Cooling	Air Cooled
Control Platform	TotalFORCE
Local Interface	Door-Mounted HIM Configuration
Application	Large Industrial Variable-Speed Motor Control

The exact catalog number is listed as an Air Cooled 755 AC Packaged Drive, while the surrounding PowerFlex 755T catalog range identifies this configuration as a 400 VAC, three-phase, Type 12/IP54, floor-mounted, low-harmonic drive.

3. Main Technical Parameters

Parameter	Specification
Model	20G1G4C1K2JNDNNNNN
Brand	Allen-Bradley
Product Family	PowerFlex
Series	PowerFlex 755T
Sub-Series	PowerFlex 755TL
Drive Type	Air-Cooled Low-Harmonic AC Drive
Input Voltage	400 VAC Class
Input Phase	3 Phase
Supply Frequency	50/60 Hz
LD Rating	800 kW / 1465 A
ND Rating	710 kW / 1175 A
HD Rating	560 kW / 1090 A
Enclosure	Type 12 / IP54
Mounting	Floor Mount
Cooling	Air Cooled
Control	TotalFORCE
HIM Configuration	Door-Mounted HIM
Drive Construction	Packaged Industrial Drive
Harmonic Architecture	Low-Harmonic
Motor Control	Variable-Speed / Vector-Based Control
Industrial Network Integration	Supported
Typical Motor Range	Up to approximately 800 kW LD, depending on duty
Approx. Height	2,000–2,400 mm
Approx. Width	1,000–1,500 mm
Approx. Depth	900–1,300 mm
Approx. Weight	650–950 kg
Installation	Indoor Industrial / Electrical Room
Mounting Orientation	Vertical Floor Mount

The 800 kW LD / 1465 A, 710 kW ND / 1175 A, and 560 kW HD / 1090 A ratings are the key electrical ratings associated with the 20G1G4C1K2 configuration.

The dimensions and weight shown above are practical planning estimates rather than guaranteed final mechanical specifications. Large packaged drives can change in physical size and weight according to options, cabinet configuration, cable arrangements, accessories, and installation requirements. The final equipment drawing should therefore be used for foundation, shipping, lifting, and installation planning.

4. Product Classification

The 20G1G4C1K2JNDNNNNN can be described as a high-power industrial variable-frequency drive, or VFD, with a low-harmonic architecture.

It is designed to convert incoming three-phase industrial AC power into controlled-frequency and controlled-voltage output power for a large motor.

By changing output frequency and voltage, the drive controls motor speed and torque.

This allows a motor-driven machine to operate according to actual process requirements rather than being restricted to fixed-speed operation.

5. Understanding the Power Ratings

The three main ratings should be considered separately.

Light Duty — 800 kW / 1465 A

The 800 kW LD rating represents the highest published power rating for this configuration.

Light-duty operation is generally associated with applications where the motor load does not require the same degree of overload capability as a heavy-duty machine.

Typical examples include large centrifugal pumps and fans where the torque requirement changes with speed.

Normal Duty — 710 kW / 1175 A

The 710 kW ND rating provides a lower power level with a corresponding current rating of 1175 A.

This rating is useful as a reference for general industrial applications with normal loading conditions.

Large pumps, fans, compressors, conveyors, and process machinery can fall into this category depending on their actual load profile.

Heavy Duty — 560 kW / 1090 A

The 560 kW HD rating is particularly important for applications involving greater torque demand and more demanding overload conditions.

Examples include crushers, mills, heavy conveyors, mixers, and machinery with substantial starting torque or rapidly changing mechanical loading.

The correct rating should always be determined from the actual motor nameplate current and mechanical duty rather than simply choosing the largest kW value.

6. Product Introduction

The Allen-Bradley 20G1G4C1K2JNDNNNNN is intended for large industrial installations where a motor must be controlled over a wide operating range and where the electrical system requires careful management of high-power electronic loads.

At an 800 kW Light Duty rating, the drive is capable of controlling a very large industrial motor.

This type of equipment is normally installed as part of a dedicated electrical system rather than inside a small machine control cabinet.

The drive provides a controlled interface between the plant electrical supply and the motor.

The motor can accelerate under controlled conditions, operate at different speeds, decelerate in a controlled manner, and respond to commands from a supervisory or process-control system.

For large industrial facilities, this provides considerably more flexibility than fixed-speed motor operation.

7. Low-Harmonic Design

The PowerFlex 755TL designation identifies the low-harmonic version of the PowerFlex 755T platform.

This is particularly important for large motor installations.

A conventional high-power frequency converter can introduce harmonic current into the electrical supply.

When a facility operates many large drives, the combined harmonic current can influence transformers, switchgear, generators, cables, capacitors, and other connected equipment.

A low-harmonic drive architecture is therefore useful when electrical power quality is an important part of the plant design.

The final harmonic performance of an installation still depends on the complete electrical network.

Transformer impedance, utility characteristics, cable arrangements, operating load, other electronic loads, and the number of drives connected to the same bus can all influence the final result.

For a large project, harmonic analysis should be considered during electrical-system design.

8. 400 VAC Class Operation

The 20G1G4C1K2JNDNNNNN is designed for a 400 VAC class, three-phase industrial power system.

This voltage class is common in many industrial plants.

At very high motor power, however, the motor current becomes substantial.

For this reason, the selection of motor voltage has a major influence on cable size, switchgear, transformer capacity, busbar requirements, and overall electrical installation.

The 400 V-class version is therefore most appropriate where the motor and plant electrical infrastructure are designed around this voltage level.

9. Air-Cooled Construction

The drive uses an air-cooled design.

A high-power electronic drive generates substantial heat during operation.

Power semiconductor devices, bus components, switching elements, control electronics, and other internal components all contribute to the thermal load.

The cooling system removes this heat and keeps the drive operating within its permissible temperature range.

For this reason, the electrical room must have adequate ventilation.

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

The surrounding area should also be kept reasonably clean so that dust and contamination do not restrict airflow or accumulate around cooling components.

10. Type 12 / IP54 Enclosure

The model uses a Type 12/IP54 floor-mounted enclosure configuration.

This provides an enclosed industrial installation suitable for many electrical rooms and controlled industrial environments.

The IP54 classification provides protection against limited dust ingress and water splashing under the relevant test conditions.

The enclosure should still be installed in a suitable environment.

High humidity, condensation, corrosive gases, excessive dust, high ambient temperature, chemical vapors, and outdoor exposure should be evaluated separately before installation.

11. Door-Mounted Human Interface

The JND configuration is associated with a door-mounted human-machine interface arrangement.

For a large floor-mounted drive, this is particularly convenient because the operator or maintenance technician can access drive information from the front of the equipment.

The local interface can be used during commissioning, troubleshooting, parameter checking, diagnostics, and local operation.

For large installations, having the interface readily accessible can reduce the need for technicians to access the interior of the enclosure during routine operating checks.

12. TotalFORCE Control

The PowerFlex 755T platform uses TotalFORCE control for demanding motor-control applications.

The control system can manage motor speed and torque while providing the drive with information about operating conditions, faults, limits, and other control parameters.

Depending on the motor and selected configuration, the drive can be used with different motor-control techniques.

This flexibility is useful because the control requirements of a centrifugal pump are very different from those of a crusher or high-inertia conveyor.

Proper commissioning remains essential.

Motor nameplate information, control mode, acceleration time, deceleration time, current limits, speed limits, torque limits, feedback settings, and process interlocks should all be configured according to the actual equipment.

13. Typical Applications

Large Water Pumps

Large water pumps can require several hundred kilowatts of motor power.

The drive allows pump speed to be adjusted according to flow and pressure requirements.

Typical applications include water-transfer stations, municipal pumping, industrial water systems, cooling-water systems, irrigation, and process-water systems.

Industrial Cooling Pumps

Industrial plants often use large pumps to circulate cooling water.

The required flow can change according to production load.

Variable-speed control allows the motor to follow the actual cooling demand.

Large Fans

Large industrial fans can consume significant electrical power.

The drive allows fan speed to be adjusted according to airflow requirements.

Typical applications include ventilation, exhaust systems, cooling systems, combustion-air systems, furnaces, and process ventilation.

Large Blowers

High-capacity blowers can also benefit from variable-speed operation.

Applications include wastewater aeration, industrial air systems, pneumatic processes, and large process-air systems.

Compressors

Large compressors often require controlled acceleration and stable speed regulation.

The drive can be integrated with process controls so that motor speed responds to pressure, flow, or production demand.

Conveyors

Large conveyors are widely used in mining, cement, ports, aggregate processing, and heavy manufacturing.

The drive can provide controlled acceleration and deceleration.

This can reduce sudden mechanical stress on belts, gearboxes, shafts, couplings, and other components.

Crushers

Crushers can require substantial starting torque and can experience rapidly changing mechanical loads.

The HD rating is particularly relevant when evaluating this type of application.

The motor and drive should be selected according to actual starting and operating torque requirements.

Mills

Large grinding mills and processing mills can require significant motor power.

The drive can control motor speed and torque while communicating with the plant control system.

Mining Machinery

Mining operations use large motors throughout material extraction and processing.

Common applications include conveyors, crushers, pumps, fans, mills, feeders, and other heavy equipment.

The high-power capability of the drive makes it suitable for many of these applications.

Cement Manufacturing

Cement facilities use large motors for grinding, conveying, crushing, ventilation, pumping, and other processes.

Variable-speed control can provide greater process flexibility.

The low-harmonic configuration can also be useful in plants where several large drives operate from the same electrical network.

Steel and Metal Processing

Steel plants can use large motors for rollers, fans, pumps, cooling equipment, conveyors, and other process machinery.

Precise speed and torque control can be important when the motor is directly involved in the production process.

Chemical and Process Plants

Chemical facilities frequently rely on pumps, compressors, fans, mixers, and other rotating equipment.

A large variable-frequency drive can provide controlled motor operation and integration with the plant automation system.

14. Main Product Advantages

High-Power Motor Control

The most obvious advantage of the 20G1G4C1K2JNDNNNNN is its very high power capacity.

With an 800 kW LD rating, it is designed for applications that are well beyond the range of ordinary wall-mounted VFDs.

Low-Harmonic Architecture

The PowerFlex 755TL architecture is intended for applications where harmonic performance is important.

This can be especially valuable in plants with multiple large drives.

High Current Capability

The drive’s published current ratings reach 1465 A in LD, 1175 A in ND, and 1090 A in HD.

This provides substantial current capacity for large 400 V-class motors.

Heavy-Duty Capability

The 560 kW HD rating makes the configuration applicable to many demanding mechanical loads.

The actual application must still be evaluated using motor current and overload requirements.

Controlled Starting

Large motors can draw substantial current and generate considerable mechanical stress during direct starting.

The drive provides controlled acceleration, allowing the motor to reach operating speed more gradually.

Controlled Deceleration

Controlled deceleration can reduce mechanical shock.

This is useful for large conveyors, fans, pumps, compressors, and high-inertia machinery.

Variable-Speed Process Control

The motor can operate at different speeds according to process requirements.

This can provide a more direct relationship between motor operation and production demand.

Industrial Automation Integration

The drive can be integrated into an industrial control architecture.

Commands, status information, diagnostics, speed references, and other drive data can be exchanged with the plant control system through the appropriate communication configuration.

Enclosed Industrial Construction

The Type 12/IP54 floor-mounted construction provides a practical packaged arrangement for industrial electrical rooms.

Local Operator Access

The door-mounted interface provides convenient local access to operating information and drive functions.

15. Detailed Parameter Table

Parameter Category	Detailed Specification
Model	20G1G4C1K2JNDNNNNN
Brand	Allen-Bradley
Family	PowerFlex
Series	PowerFlex 755T
Sub-Series	PowerFlex 755TL
Product	Air-Cooled 755 AC Packaged Drive
Drive Type	Low-Harmonic Variable-Frequency AC Drive
Input Voltage	400 VAC Class
Input Phase	Three Phase
Input Frequency	50/60 Hz
LD Power	800 kW
LD Current	1465 A
ND Power	710 kW
ND Current	1175 A
HD Power	560 kW
HD Current	1090 A
Enclosure	Type 12 / IP54
Mounting	Floor Mount
Cooling	Air Cooled
Control Platform	TotalFORCE
Local Interface	Door-Mounted HIM
Harmonic Design	Low Harmonic
Application	Large Industrial Motors
Approx. Height	2,000–2,400 mm
Approx. Width	1,000–1,500 mm
Approx. Depth	900–1,300 mm
Approx. Weight	650–950 kg
Installation	Industrial Electrical Room
Typical Equipment	Pumps, Fans, Compressors, Conveyors, Mills, Crushers
Service Access	Front / Configuration Dependent
Cable Arrangement	Configuration Dependent
Environmental Requirements	Industrial Controlled Environment

The core electrical specifications are the 400 VAC three-phase configuration and the 800/710/560 kW LD/ND/HD ratings with corresponding 1465/1175/1090 A current ratings.

16. Dimensions and Weight

Because the 20G1G4C1K2JNDNNNNN is a large floor-mounted packaged drive, its physical footprint is considerably larger than that of a conventional compact VFD.

For preliminary equipment-room planning, an approximate envelope of 2,000–2,400 mm high, 1,000–1,500 mm wide, and 900–1,300 mm deep can be used.

A preliminary equipment weight of approximately 650–950 kg can be used for planning purposes.

These values are not intended to replace the final mechanical drawing.

Actual dimensions and weight may vary according to cabinet construction, options, line-side components, output configuration, cable entry, auxiliary equipment, and other factory-selected configurations.

The final shipping weight is especially important when planning transportation, unloading, lifting, and positioning.

The final installed weight should also be considered when checking the floor structure and equipment foundation.

17. Electrical Installation

A drive of this size requires careful electrical engineering.

The incoming power system should be checked for voltage, frequency, transformer capacity, available fault current, grounding arrangement, protective devices, cable capacity, and short-circuit rating.

The drive should be coordinated with upstream switchgear and protection equipment.

The motor cables should be selected according to current, cable length, installation method, ambient temperature, voltage drop, and applicable electrical standards.

The grounding system should be designed carefully.

The motor and drive should share an appropriate grounding arrangement to reduce electrical noise and provide a suitable fault-current path.

18. Motor Compatibility

Motor selection should be based on actual electrical and mechanical requirements.

The most important information includes motor rated voltage, motor rated current, rated power, rated frequency, rated speed, service factor, overload characteristics, motor type, insulation system, cooling method, and required speed range.

The drive’s LD, ND, and HD ratings should be compared with the motor’s actual full-load current.

A motor that appears suitable based only on horsepower or kilowatt rating may not necessarily be suitable when its current or overload requirements are considered.

19. Harmonic and Power-Quality Considerations

For large industrial plants, harmonic performance can be an important part of the electrical design.

The PowerFlex 755TL low-harmonic configuration is intended to help reduce the harmonic impact associated with large variable-speed drives.

However, the final plant-level performance is affected by the complete electrical network.

The transformer impedance, utility connection, other drives, capacitors, generators, cable impedance, and operating load can all affect the resulting harmonic distortion.

A plant-wide power-quality study is therefore recommended for large installations.

20. Maintenance

Maintenance should focus on cooling, electrical connections, enclosure condition, fans, control electronics, and diagnostic information.

Cooling is particularly important because the drive handles a very high electrical power level.

Air filters and cooling paths should be inspected according to the applicable maintenance schedule.

Dust and contamination should be removed before they interfere with airflow.

Electrical connections should be inspected for signs of overheating, discoloration, looseness, or abnormal temperature.

The door-mounted interface can also provide useful information during routine troubleshooting and maintenance.

21. Five Same-Series or Closely Related Models

The following models provide useful comparisons within the PowerFlex 755TL high-power range.

Model	Voltage	LD Rating	ND Rating	HD Rating	Enclosure	Cooling
20G1G4C1K1JNDNNNNN	400 VAC	710 kW / 1182 A	630 kW / 1112 A	500 kW / 1040 A	Type 12/IP54	Air Cooled
20G1G4C1K2JNDNNNNN	400 VAC	800 kW / 1465 A	710 kW / 1175 A	560 kW / 1090 A	Type 12/IP54	Air Cooled
20G1G4C1K2LNANNNNN	400 VAC	800 kW / 1465 A	710 kW / 1175 A	560 kW / 1090 A	Type 12/IP54	Air Cooled
20G1G4C1K4LNANNNNN	400 VAC	850 kW / 1581 A	800 kW / 1465 A	630 kW / 1175 A	Type 12/IP54	Air Cooled
20G1G4C1K6LNDNNNNN	400 VAC	Higher-power class	Higher-power class	Higher-power class	Type 12/IP54	Air Cooled

The 1K2 configuration is positioned between the 1K1 and 1K4 configurations in the 400 V-class high-power range. The catalog listings identify the 1K2 models at 800 kW LD, 710 kW ND, and 560 kW HD.

22. Five Related Models for Practical Comparison

Model	Series	Voltage	Main Rating	Enclosure	Typical Application
20G1G4C920LNDNNNNN	PowerFlex 755TL	400 VAC	Approx. 560 kW LD class	Type 12/IP54	Large pumps and fans
20G1G4C1K1JNDNNNNN	PowerFlex 755TL	400 VAC	710 kW LD	Type 12/IP54	Large industrial machinery
20G1G4C1K2JNDNNNNN	PowerFlex 755TL	400 VAC	800 kW LD	Type 12/IP54	Very large industrial motors
20G1G4C1K4LNANNNNN	PowerFlex 755TL	400 VAC	850 kW LD	Type 12/IP54	Heavy process equipment
20G1G4C1K6LNDNNNNN	PowerFlex 755TL	400 VAC	Higher-power class	Type 12/IP54	Large industrial process systems

The 20G1G4C1K2JNDNNNNN sits in the upper portion of the 400 V-class PowerFlex 755T range, with the 1K4 and 1K6 configurations providing higher-capacity alternatives.

23. Five Same-Brand Models

Model	Product Series	Voltage Class	Main Rating / Class	Enclosure	Typical Use
20G1G4C540LNDNNNNN	PowerFlex 755	400 VAC	Medium-high power	Type 12/IP54	Pumps, fans, process equipment
20G1G4C920LNDNNNNN	PowerFlex 755	400 VAC	High-power	Type 12/IP54	Pumps, compressors, conveyors
20G1G4C1K1JNDNNNNN	PowerFlex 755	400 VAC	710 kW LD class	Type 12/IP54	Large industrial motors
20G1G4C1K2JNDNNNNN	PowerFlex 755	400 VAC	800 kW LD class	Type 12/IP54	Very large industrial motors
20G1G4C1K4LNANNNNN	PowerFlex 755	400 VAC	850 kW LD class	Type 12/IP54	Heavy industrial equipment

These models are useful when comparing different power levels and configuration options within the same high-power drive ecosystem. The broader catalog contains numerous 400 V-class PowerFlex 755 packaged-drive configurations.

24. Higher-Voltage Related Models

If the motor operates at 690 VAC rather than the 400 V class, the PowerFlex 755T range also includes high-power 690 VAC configurations.

Model	Voltage	LD Power	ND Power	HD Power	LD Current	ND Current	HD Current
20G1G4F565LNDNNNNN	690 VAC	630 kW	560 kW	500 kW	650 A	565 A	505 A
20G1G4F650LNDNNNNN	690 VAC	710 kW	630 kW	560 kW	735 A	650 A	565 A
20G1G4F735LNDNNNNN	690 VAC	800 kW	710 kW	630 kW	820 A	735 A	650 A
20G1G4F820LNDNNNNN	690 VAC	900 kW	800 kW	710 kW	920 A	820 A	735 A
20G1G4F920LNDNNNNN	690 VAC	1,000 kW	900 kW	800 kW	1,074 A	920 A	820 A

These higher-voltage models illustrate an important selection principle: the correct drive depends on the actual motor voltage as well as the required power.

25. Application Comparison

Application	Drive Requirement	Suitability of 20G1G4C1K2JNDNNNNN
Large Centrifugal Pump	Variable speed, high power	Very suitable
Large Fan	Variable torque, high power	Very suitable
Industrial Blower	Speed control and continuous operation	Very suitable
Compressor	Controlled acceleration and speed	Suitable with application verification
Conveyor	High torque and controlled acceleration	Suitable
Crusher	High starting torque and overload	Suitable with HD rating verification
Mill	High torque and high inertia	Suitable with detailed engineering
Water Treatment	Large pumps and blowers	Very suitable
Mining	Conveyors, pumps, fans, crushers	Suitable
Cement	Fans, mills, pumps, conveyors	Suitable
Steel	Pumps, fans, rollers, conveyors	Suitable
Chemical Processing	Pumps, compressors, process equipment	Suitable

26. Advantages for Large Industrial Plants

The 20G1G4C1K2JNDNNNNN is particularly useful when a plant needs a common high-power drive platform across multiple areas.

For example, a large manufacturing facility may use one drive configuration for cooling-water pumps, another for exhaust fans, and another for conveyors.

Using a common drive family can simplify engineering, operator training, maintenance procedures, spare-parts planning, and automation integration.

The drive also provides a centralized way of managing motor speed and torque.

Instead of relying entirely on mechanical control devices, the plant can use the motor-drive combination as part of the process-control strategy.

27. Mechanical Installation

The equipment should be installed on a level and mechanically stable surface.

Because the unit can weigh several hundred kilograms, transportation and positioning require suitable lifting equipment.

The installation area should provide sufficient space for opening the enclosure door, servicing the drive, inspecting cooling equipment, and routing power and control cables.

The floor should be evaluated for the total installed load.

Cable entry should be planned before installation because the size and routing of cables at this power level can be substantial.

28. Environmental Considerations

The drive should be protected from conditions that exceed its specified operating environment.

Important environmental factors include:

Environmental Factor	Consideration
Ambient Temperature	Must remain within specified operating limits
Humidity	Avoid condensation
Dust	Control excessive accumulation
Oil Mist	Avoid contamination of cooling system
Corrosive Gas	Requires environmental evaluation
Altitude	Derating may be required
Ventilation	Required for air-cooled operation
Water Exposure	Avoid direct or uncontrolled water exposure
Vibration	Supporting structure should be appropriate
Heat Sources	Avoid external heat accumulation

A clean, properly ventilated electrical room is generally preferable for high-power air-cooled equipment.

29. Maintenance Advantages

The floor-mounted packaged configuration provides a practical arrangement for industrial maintenance.

The door-mounted interface allows technicians to obtain operating information without unnecessary access to the internal power section.

Diagnostic information can assist with identifying abnormal operating conditions.

Routine maintenance should still include inspection of fans, filters, connections, enclosure condition, grounding, and cable terminations.

Preventive maintenance is particularly important for equipment operating continuously at high load.

30. Recommended Engineering Checklist

Selection Item	What to Confirm
Motor Power	Actual motor kW
Motor Current	Full-load current
Motor Voltage	Actual rated voltage
Motor Frequency	50 Hz / 60 Hz
Load Type	Variable torque / constant torque
Starting Torque	Required starting torque
Overload	Required overload level
Speed Range	Minimum / maximum speed
Acceleration	Required acceleration time
Deceleration	Required deceleration time
Braking	Required braking method
Feedback	Encoder or sensorless
Communication	Required industrial network
Harmonics	Plant power-quality limits
Cable Length	Motor cable distance
Environment	Temperature, dust, humidity
Enclosure	Type 12/IP54 requirement
Cooling	Electrical-room ventilation
Dimensions	Final mechanical drawing
Weight	Final shipping and installed weight
Maintenance	Required service clearance

31. Key Specification Summary

Category	Specification
Model	20G1G4C1K2JNDNNNNN
Brand	Allen-Bradley
Family	PowerFlex
Series	PowerFlex 755T
Sub-Series	PowerFlex 755TL
Product Type	High-Power Low-Harmonic AC Drive
Input Voltage	400 VAC Class
Input Phase	3 Phase
LD Rating	800 kW / 1465 A
ND Rating	710 kW / 1175 A
HD Rating	560 kW / 1090 A
Enclosure	Type 12 / IP54
Cooling	Air Cooled
Mounting	Floor Mount
Control	TotalFORCE
Local Interface	Door-Mounted HIM
Harmonic Design	Low Harmonic
Approx. Height	2,000–2,400 mm
Approx. Width	1,000–1,500 mm
Approx. Depth	900–1,300 mm
Approx. Weight	650–950 kg
Primary Application	Large Industrial Motors
Typical Industries	Mining, Cement, Steel, Water, Chemical, Manufacturing

32. Final Product Description

The Allen-Bradley 20G1G4C1K2JNDNNNNN is a high-capacity PowerFlex 755TL low-harmonic AC drive developed for large industrial motor-control systems.

Its principal configuration combines 400 VAC three-phase operation, air-cooled construction, Type 12/IP54 floor-mounted packaging, high-current power electronics, TotalFORCE control, and a local door-mounted interface.

The drive reaches 800 kW at 1465 A in Light Duty, 710 kW at 1175 A in Normal Duty, and 560 kW at 1090 A in Heavy Duty.

This power range makes it suitable for substantial rotating equipment, including large pumps, fans, compressors, conveyors, crushers, mills, blowers, and process machinery.

The low-harmonic architecture is particularly relevant to facilities where several high-power electronic drives operate on the same electrical distribution system.

The Type 12/IP54 enclosure provides a practical enclosed arrangement for industrial electrical rooms, while the air-cooled construction provides a familiar approach to thermal management for large drive equipment.

The door-mounted interface is useful for commissioning, local monitoring, diagnostics, and maintenance.

For applications with demanding mechanical loads, the HD rating should be considered carefully rather than selecting the drive solely from the maximum LD power rating.

For a final project selection, the motor nameplate current, motor voltage, mechanical load profile, overload requirement, speed range, harmonic requirements, cable length, environmental conditions, cooling requirements, automation architecture, and final mechanical dimensions should all be checked together.

The 20G1G4C1K2JNDNNNNN is therefore best suited to large industrial installations where high motor power, variable-speed operation, low-harmonic performance, enclosed construction, and centralized motor control are important requirements.