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Allen-Bradley 20G14TC750AN0NNNNN PowerFlex 755 AC Drive — Detailed Product Description, Specifications, Applications, Advantages, and Model Selection Guide

1. Product Overview

The Allen-Bradley 20G14TC750AN0NNNNN is a high-power PowerFlex 755 Air-Cooled AC Drive designed for large industrial motor-control applications where high current capacity, reliable speed regulation, flexible system architecture, and integration with modern automation systems are required.

This model belongs to the PowerFlex 755 family and is part of the broader PowerFlex 750-Series platform. It is a high-capacity common DC bus drive intended for demanding industrial installations, particularly where large motors and high-power mechanical loads must be controlled accurately and continuously.

The 20G14TC750AN0NNNNN is associated with a 400 VAC three-phase system and a nominal 540 VDC common-bus input class. Its rated output capability reaches 796 A in Light Duty, 750 A in Normal Duty, and 585 A in Heavy Duty, providing a very substantial power range for large motors.

For the corresponding 400 V-class application, the model provides approximately 450 kW Light Duty, 400 kW Normal Duty, and 315 kW Heavy Duty capacity. This makes it suitable for large pumps, fans, conveyors, compressors, material-handling systems, process machinery, mining equipment, crushers, mills, and other large industrial machines.

The catalog number is particularly important because the complete part number identifies not only the current and power rating but also the input arrangement, enclosure configuration, filtering arrangement, braking configuration, human-interface configuration, and other factory-selected characteristics.

The 20G14TC750AN0NNNNN should therefore be treated as a complete configured drive catalog number rather than simply a generic 750 A inverter.

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2. Brand and Product Series

Item	Description
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Platform	PowerFlex 750-Series
Product Type	Air-Cooled AC Drive
Drive Category	High-Power Industrial AC Drive
Catalog Number	20G14TC750AN0NNNNN
Input Arrangement	DC Input with Precharge
Nominal DC Bus Class	540 VDC
AC System Class	400 VAC, Three Phase
Cooling	Forced-Air / Air Cooled
Frame	Frame 8
Enclosure Style	Open Type
Application Class	Industrial Variable-Frequency Drive
Typical Control Role	Large Motor Speed, Torque, and Process Control

The PowerFlex 755 series is positioned for applications that require considerably more functionality and scalability than a basic compact variable-frequency drive.

The series is particularly appropriate for industrial machines where motor performance, network integration, diagnostics, feedback capability, energy management, and application flexibility are important design considerations.

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3. Complete Technical Parameter Table

Parameter	Specification
Model / Part Number	20G14TC750AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	Air-Cooled AC Drive
Product Family	PowerFlex 750-Series
Input Type	DC Input with Precharge
Nominal DC Input Class	540 VDC
AC System Class	400 VAC
Phase	Three Phase
Output Frequency	Variable-frequency motor output
Light Duty Continuous Current	796 A
Light Duty Power	450 kW
Normal Duty Continuous Current	750 A
Normal Duty Power	400 kW
Heavy Duty Continuous Current	585 A
Heavy Duty Power	315 kW
Light Duty 1-Minute Current	Approximately 876 A
Heavy Duty 1-Minute Current	Approximately 644 A
Frame Size	Frame 8
Cooling Method	Forced Air / Air Cooled
Enclosure	Open Type
Filtering Configuration	Factory configuration with filter/CM jumper arrangement identified by “A” suffix position
Dynamic Braking	No internal dynamic braking transistor specified for this catalog configuration
Internal Braking Resistor	None
Human Interface Module	Blank / No HIM
Communication	Embedded EtherNet/IP
Common DC Bus Capability	Yes
Typical Operating Temperature	Approximately 0 to 50 °C, subject to installation configuration
Relative Humidity	Approximately 5–95%, non-condensing
Storage Temperature	Approximately -40 to +70 °C
Approximate Dimensions	2145 × 778 × 421 mm
Approximate Weight	162 kg
Installation Orientation	Vertical industrial installation
Application Class	Heavy Industrial
Typical Motor Range	Up to approximately 400 kW Normal Duty
Typical Load Types	Pumps, fans, conveyors, compressors, mills, crushers, process machinery
Installation Consideration	Frame 8 equipment requires appropriate mechanical handling provisions
Control Architecture	PowerFlex 755 industrial drive platform
Lifecycle Note	Original AN catalog configuration is discontinued; JN configuration is the corresponding replacement configuration

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4. Electrical Rating

The electrical capacity of the 20G14TC750AN0NNNNN is one of its most important characteristics.

The drive provides three principal duty classifications: Light Duty, Normal Duty, and Heavy Duty. These ratings allow the same general drive platform to be matched to different motor load profiles.

For large industrial motors, selecting the correct duty rating is more important than simply looking at the motor’s nominal horsepower or kilowatt value.

A motor driving a large centrifugal fan may have a relatively predictable torque requirement, while a crusher, conveyor, mixer, extruder, or loaded process machine may experience considerably higher torque requirements during acceleration or operation.

The three rating levels allow the drive to be selected according to the actual application rather than relying only on the motor nameplate power.

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5. Light Duty Rating

The 20G14TC750AN0NNNNN provides a 796 A continuous Light Duty rating and approximately 450 kW Light Duty power capability.

Light Duty operation is generally appropriate for applications where the load torque and overload requirement are comparatively moderate.

Typical examples include large centrifugal fans, large centrifugal pumps, cooling-water systems, ventilation systems, and other applications where the mechanical load does not require the same overload capability as a high-torque process machine.

The high current rating also provides useful design margin when the motor application has a relatively stable load profile.

Light Duty Parameter	Value
Continuous Output Current	796 A
Approximate 1-Minute Current	876 A
Approximate Power Rating	450 kW
Frame	8
Cooling	Air Cooled
Typical Applications	Fans, pumps, ventilation, large process auxiliaries

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6. Normal Duty Rating

The Normal Duty rating is 750 A continuous and approximately 400 kW.

This is one of the most useful rating references when selecting the 20G14TC750AN0NNNNN for large industrial motor applications.

A 400 kW Normal Duty rating places this drive in a high-power industrial category. It is suitable for large rotating equipment where continuous operation, controlled acceleration, speed regulation, and reliable process control are required.

Normal Duty applications may include large conveyors, pumps, fans, compressors, material-handling systems, and production machinery.

Normal Duty Parameter	Value
Continuous Output Current	750 A
Approximate 1-Minute Current	825 A
Approximate Power Rating	400 kW
Frame	8
Cooling	Air Cooled
Typical Applications	Conveyors, pumps, fans, compressors, industrial machinery

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7. Heavy Duty Rating

The Heavy Duty rating is 585 A continuous and approximately 315 kW.

This lower continuous current compared with the Light Duty and Normal Duty ratings does not indicate a less capable drive. Instead, it reflects the greater thermal and overload requirements associated with high-torque applications.

Heavy Duty operation is particularly relevant to machinery that experiences high starting torque, repeated acceleration, sudden load changes, or significant mechanical resistance.

Examples include crushers, mills, loaded conveyors, mixers, certain hoists, process machinery, and other high-inertia or high-torque systems.

Heavy Duty Parameter	Value
Continuous Output Current	585 A
Approximate 1-Minute Current	644 A
Approximate Power Rating	315 kW
Frame	8
Cooling	Air Cooled
Typical Applications	Crushers, mills, high-torque conveyors, mixers, heavy machinery

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8. 400 VAC Three-Phase System

The 20G14TC750AN0NNNNN is intended for a 400 VAC-class industrial electrical system.

Three-phase power is standard for large industrial motor applications because it provides an efficient method of delivering substantial power to high-capacity motors.

At this drive size, system-level engineering becomes especially important. Incoming power distribution, common DC bus architecture, cabinet construction, grounding, cable sizing, thermal management, disconnect equipment, and protection devices should all be designed around the actual operating conditions.

The drive should therefore be considered part of a complete motor-control system rather than an isolated component.

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9. DC Input with Precharge

The “14” portion of the catalog number identifies the common-bus/DC-input configuration associated with this product family.

The drive is intended for DC input with precharge, making it particularly suitable for common DC bus architectures.

Common DC bus systems can be advantageous in facilities where multiple drives operate together and energy can be exchanged through the shared DC link.

For example, in a coordinated production machine, one motor may be accelerating while another motor is decelerating. Depending on the system design, regenerative energy can be managed through the common DC bus rather than being treated independently by each individual drive.

This type of architecture is particularly useful in large industrial systems where several drives are located within the same electrical installation.

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10. Common DC Bus Applications

Common DC bus technology is particularly useful in multi-drive industrial machinery.

Typical applications include:

• Large conveyor systems
• Mining material-handling equipment
• Steel-processing machinery
• Paper machines
• Large production lines
• Crane and material-handling systems
• Multiple-motor process equipment
• Large mechanical systems with coordinated drives
• Regenerative applications
• Machines with multiple interconnected motor axes

The 20G14TC750AN0NNNNN can therefore serve as a high-power component within a larger coordinated drive architecture.

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11. Meaning of the AN Configuration

The AN configuration is an important part of the catalog number.

In the PowerFlex 755 catalog structure, the relevant character identifies the factory configuration associated with filtering and common-mode capacitance jumper arrangements.

The “A” configuration indicates the corresponding filter/common-mode jumper arrangement differs from the “J” configuration.

This is not simply a cosmetic catalog-number difference.

When replacing or upgrading a drive, engineers should verify the complete catalog number rather than replacing an AN model with a JN model without checking the electrical and EMC requirements of the installation.

For current replacement planning, the corresponding JN configuration should be evaluated where appropriate.

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12. Filtering and EMC Considerations

Large industrial drives can generate conducted and radiated electromagnetic interference if the installation is not properly engineered.

The filtering and common-mode configuration therefore becomes an important part of the drive selection process.

For the 20G14TC750AN0NNNNN, the factory configuration should be interpreted from the complete catalog number and installation documentation.

The cabinet grounding system, motor cable shielding, cable routing, grounding conductors, motor-frame bonding, and control-cable separation can all affect overall EMC performance.

For a large 750 A-class drive, these installation details are especially important because motor cable lengths and power levels can be substantial.

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13. Dynamic Braking

The 20G14TC750AN0NNNNN does not represent an internally equipped dynamic-braking-resistor configuration.

There is no internal braking resistor associated with this catalog configuration.

For applications requiring rapid deceleration, high stopping frequency, or substantial braking energy dissipation, the system designer may need to consider an external braking arrangement or an appropriate regenerative architecture.

This is particularly important for high-inertia loads.

A large rotating machine can store a significant amount of kinetic energy. When the drive commands the motor to decelerate, that energy has to go somewhere.

Depending on the machine architecture, the appropriate solution may involve:

• External braking hardware
• Regenerative equipment
• Controlled deceleration
• Mechanical braking
• Common DC bus energy sharing
• Application-specific energy management

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14. Mechanical Specifications

The 20G14TC750AN0NNNNN is a Frame 8 high-power drive.

This is physically much larger than the compact PowerFlex drives commonly used for small motors.

For the open-type Frame 8 configuration, the approximate dimensions are:

2145 mm high × 778 mm wide × 421 mm deep

The actual installation envelope should always allow additional space for electrical connections, ventilation, cable bending radius, service access, and cabinet construction.

Mechanical Parameter	Specification
Frame Size	8
Enclosure Type	Open Type
Height	Approximately 2145 mm
Width	Approximately 778 mm
Depth	Approximately 421 mm
Approximate Weight	162 kg
Cooling	Forced Air
Installation	Vertical
Cabinet Requirement	Industrial electrical enclosure / equipment cabinet
Handling	Mechanical lifting/handling provisions recommended

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15. Weight and Handling

At approximately 162 kg, the drive should not be treated like a small panel-mounted inverter.

Mechanical handling must be considered during:

• Receiving
• Warehouse storage
• Cabinet assembly
• Transportation
• Installation
• Maintenance
• Replacement
• Removal

The installation team should ensure that the cabinet structure and mounting hardware are capable of supporting the drive safely.

Frame 8 equipment may also require dedicated mechanical handling equipment during cabinet installation.

For new installations, it is good practice to plan the drive’s route from delivery area to final cabinet position before the equipment arrives.

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16. Cooling and Thermal Management

The drive uses air cooling / forced-air cooling.

At this power level, thermal management becomes a major engineering consideration.

A 400 kW-class industrial drive can generate substantial heat. The cabinet must therefore be designed to maintain an acceptable internal temperature.

The ventilation system should consider:

• Drive heat loss
• Cabinet internal volume
• Ambient temperature
• Airflow direction
• Filter condition
• Fan operation
• Cabinet ventilation
• Nearby heat-generating equipment
• Altitude
• Motor cable configuration
• Continuous loading

A drive can be electrically correctly sized and still experience thermal problems if the cabinet is poorly ventilated.

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17. Environmental Specifications

The 20G14TC750AN0NNNNN is intended for industrial environments.

Typical environmental reference values include approximately 0 to 50 °C operating temperature, with relative humidity in the approximate range of 5–95% non-condensing.

Storage temperature can be approximately -40 to +70 °C.

Environmental Parameter	Typical Specification
Operating Temperature	Approximately 0 to 50 °C
Relative Humidity	Approximately 5–95%, non-condensing
Storage Temperature	Approximately -40 to +70 °C
Cooling	Forced Air
Installation Environment	Industrial
Condensation	Avoid
Airflow	Required
Contamination Control	Appropriate cabinet/environmental protection required

The exact allowable operating conditions should be evaluated against the complete installation configuration.

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18. Embedded EtherNet/IP

The PowerFlex 755 platform provides embedded EtherNet/IP capability, making the drive suitable for integration into modern industrial automation networks.

This can significantly simplify communication between the drive and a supervisory control system.

Typical communication functions can include:

• Drive start/stop commands
• Speed references
• Frequency references
• Status information
• Fault information
• Current monitoring
• Voltage monitoring
• Motor feedback information
• Parameter access
• Diagnostic information
• Process data exchange

For large production systems, network integration can reduce the amount of hardwired control required and can provide operators and maintenance personnel with much better visibility into drive operation.

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19. Human Interface Configuration

The requested catalog number is configured with a blank / no HIM arrangement.

This means the drive is not being specified as a complete package with a permanently selected local Human Interface Module.

That can be useful in centralized control architectures where operators normally interact with the machine through:

• PLC systems
• HMI panels
• SCADA systems
• Industrial Ethernet
• Remote control stations
• Supervisory control systems

A no-HIM configuration can also make sense when the drive is installed inside a cabinet where local keypad access is not part of the machine operating philosophy.

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20. Application: Large Pump Systems

Large pumps are one of the most natural applications for a high-power variable-frequency drive.

A variable-speed drive allows the pump motor speed to be adjusted according to process demand rather than simply operating continuously at full speed.

Typical applications include:

• Water treatment
• Municipal water systems
• Industrial water circulation
• Cooling-water systems
• Irrigation
• Process-fluid circulation
• Mining water systems
• Power-generation auxiliary systems
• Chemical process systems

For centrifugal pumps, reducing motor speed can significantly reduce hydraulic output and may provide substantial energy-saving opportunities when compared with continuously operating the pump at full speed and controlling flow through throttling.

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21. Application: Large Fan Systems

Large industrial fans and blowers are another major application.

Examples include:

• Furnace fans
• Boiler fans
• Mine ventilation
• Industrial ventilation
• Cement plant fans
• Dust collection systems
• Exhaust fans
• Cooling towers
• Process-air systems

The PowerFlex 755 can control the motor speed according to actual airflow requirements.

This is particularly valuable in processes where demand changes during the production cycle.

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22. Application: Conveyor Systems

The 750 A Normal Duty rating makes this drive appropriate for large conveyor systems when the motor and application fall within the correct electrical and duty requirements.

Potential applications include:

• Mining conveyors
• Bulk material conveyors
• Ore handling
• Coal handling
• Cement material handling
• Port terminals
• Aggregate plants
• Large warehouse systems
• Industrial production lines

Conveyor applications benefit from controlled acceleration and deceleration.

Instead of applying full motor torque instantly, the drive can ramp the motor according to the mechanical requirements of the conveyor.

This can reduce mechanical shock on:

• Gearboxes
• Couplings
• Conveyor belts
• Shafts
• Bearings
• Drive pulleys

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23. Application: Mining

Mining is one of the most demanding environments for large motor drives.

Typical applications include:

• Belt conveyors
• Crushers
• Screens
• Pumps
• Fans
• Mills
• Material-handling systems
• Dewatering equipment

The high current capability of the 20G14TC750AN0NNNNN makes it suitable for very large motor installations where high-power variable-speed control is required.

For mining applications, however, environmental conditions, dust, altitude, ambient temperature, enclosure design, motor selection, and maintenance accessibility must all be evaluated carefully.

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24. Application: Cement and Aggregate Processing

Cement plants and aggregate facilities use many high-power motors.

Potential applications include:

• Crushers
• Mills
• Fans
• Conveyors
• Feeders
• Kiln auxiliaries
• Material-handling systems
• Dust collection
• Large pumps

The drive’s high current capability makes it useful where conventional smaller drives cannot provide the necessary motor capacity.

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25. Application: Steel and Metal Processing

Steel and metal-processing facilities frequently require large motors with controlled acceleration, precise speed control, and reliable operation.

Potential applications include:

• Cooling systems
• Large fans
• Pumps
• Conveyors
• Material handling
• Rolling equipment auxiliaries
• Process ventilation
• Extraction systems

The PowerFlex 755 platform can provide a common control architecture across a wide range of motor sizes.

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26. Application: Paper and Pulp Machinery

Paper and pulp equipment often contains multiple large motors operating together.

Typical systems include:

• Pumps
• Fans
• Roll drives
• Vacuum systems
• Stock preparation equipment
• Material handling
• Process-air systems

The common DC bus architecture can be particularly useful in multi-drive machinery where energy exchange between drives is beneficial.

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27. Application: Large Compressors

High-power compressors can also benefit from variable-speed motor control.

Depending on the compressor technology and process design, the drive can provide:

• Controlled startup
• Controlled acceleration
• Speed adjustment
• Process optimization
• Reduced mechanical shock
• Integration with automation systems
• Diagnostic information

Compressor applications must be evaluated carefully because the motor load profile can vary significantly between compressor technologies.

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28. Main Product Advantages

High Power Capability

The most obvious advantage of the 20G14TC750AN0NNNNN is its very high current and power capacity.

A 750 A Normal Duty rating and approximately 400 kW Normal Duty capability place this drive firmly in the high-power industrial category.

This makes it appropriate for large motors that would be beyond the practical range of compact variable-frequency drives.

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Flexible Duty Ratings

The Light Duty, Normal Duty, and Heavy Duty classifications provide flexibility.

The same drive platform can address applications with different load characteristics, provided the selected motor and application remain within the applicable rating.

This makes the PowerFlex 755 family useful for engineering projects where load conditions differ significantly from one machine to another.

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Common DC Bus Capability

The common DC bus architecture can simplify large multi-drive systems.

Energy can potentially be shared between drive sections, which can be especially useful in coordinated machinery.

This can improve system-level energy utilization and may reduce the need for individual braking arrangements in certain applications.

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Embedded Industrial Networking

Embedded EtherNet/IP provides an efficient path for integrating the drive into industrial automation architectures.

This can simplify system control and improve visibility of operating conditions.

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High-Power Industrial Construction

The Frame 8 design is intended for large industrial installations.

The physical construction, cooling architecture, and electrical capacity are designed around large motor applications rather than compact machine-control applications.

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Suitable for Large Continuous Processes

The drive is particularly useful for processes that operate for long periods.

Examples include:

• Water pumping
• Ventilation
• Material transport
• Mining
• Cement production
• Paper production
• Steel processing
• Industrial cooling

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29. Advantages for System Integrators

For system integrators, the PowerFlex 755 platform offers several practical advantages.

The broad range of current ratings allows integrators to standardize their drive architecture across different machine sizes.

The embedded networking capability can also reduce the number of additional communication components required.

The common DC bus capability is another advantage when designing multi-drive systems.

The standardized PowerFlex platform can also make engineering, commissioning, troubleshooting, and maintenance easier when several drive sizes are used within the same plant.

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30. Advantages for OEM Machine Builders

For OEMs, a high-power drive platform provides a way to develop standardized machine architectures.

The same general drive family can be used across multiple machine models while selecting different current and duty ratings.

This can simplify:

• Electrical design
• Software development
• Operator-interface design
• Spare-parts planning
• Maintenance training
• Documentation
• Commissioning

For machine builders producing different machine capacities, this type of platform consistency can be valuable.

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31. Advantages for Plant Operators

Plant operators benefit from the ability to regulate motor speed according to actual process requirements.

Instead of simply switching a large motor on and off, the drive provides controlled acceleration, controlled operation, and controlled deceleration.

This can help reduce mechanical stress and improve process control.

Network integration can also allow operators to see drive status, alarms, faults, and operating information from centralized control systems.

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32. Five Recommended Models from the Same TC Series

The following models are closely related PowerFlex 755 common-DC-bus 400 V-class Frame 8 configurations and are useful comparison points around the 750 A model.

Model / Part Number	Light Duty	Normal Duty	Heavy Duty	Frame	Approx. Power Range	Dimensions	Weight
20G14TC460JN0NNNNN	540 A / 315 kW	460 A / 250 kW	385 A / 200 kW	8	200–315 kW	Approx. 2145 × 778 × 421 mm	Approx. 162 kg
20G14TC540JN0NNNNN	585 A / 315 kW	540 A / 315 kW	456 A / 250 kW	8	250–315 kW	Approx. 2145 × 778 × 421 mm	Approx. 162 kg
20G14TC567JN0NNNNN	612 A / 355 kW	567 A / 315 kW	472 A / 250 kW	8	250–355 kW	Approx. 2145 × 778 × 421 mm	Approx. 162 kg
20G14TC650JN0NNNNN	750 A / 400 kW	650 A / 355 kW	540 A / 315 kW	8	315–400 kW	Approx. 2145 × 778 × 421 mm	Approx. 162 kg
20G14TC770JN0NNNNN	832 A / 450 kW	770 A / 400 kW	642 A / 355 kW	8	355–450 kW	Approx. 2145 × 778 × 421 mm	Approx. 162 kg

These models are particularly useful when selecting a drive based on motor current rather than simply choosing by motor kW.

The 20G14TC650JN0NNNNN is a particularly close alternative when the required Normal Duty current is below 750 A.

The 20G14TC770JN0NNNNN provides additional current capacity when the 750 A Normal Duty rating is not sufficient.

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33. Comparison with 20G14TC650

The 20G14TC650 model is a logical lower-capacity alternative.

Parameter	20G14TC750AN0NNNNN	20G14TC650JN0NNNNN
Light Duty Current	796 A	750 A
Light Duty Power	450 kW	400 kW
Normal Duty Current	750 A	650 A
Normal Duty Power	400 kW	355 kW
Heavy Duty Current	585 A	540 A
Heavy Duty Power	315 kW	315 kW
Frame	8	8
Dimensions	Approx. 2145 × 778 × 421 mm	Approx. 2145 × 778 × 421 mm
Weight	Approx. 162 kg	Approx. 162 kg

For a motor requiring approximately 600–650 A Normal Duty, the 650 A version can provide a more appropriate selection.

If the application approaches 700–750 A Normal Duty, the 750 A version provides additional operating margin.

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34. Comparison with 20G14TC770

The 770 A version is the logical step upward.

Parameter	20G14TC750AN0NNNNN	20G14TC770JN0NNNNN
Light Duty Current	796 A	832 A
Light Duty Power	450 kW	450 kW
Normal Duty Current	750 A	770 A
Normal Duty Power	400 kW	400 kW
Heavy Duty Current	585 A	642 A
Heavy Duty Power	315 kW	355 kW
Frame	8	8
Dimensions	Approx. 2145 × 778 × 421 mm	Approx. 2145 × 778 × 421 mm
Weight	Approx. 162 kg	Approx. 162 kg

The 770 A model becomes particularly attractive where the application requires additional Heavy Duty current capacity.

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35. Five Related PowerFlex 755 Models

For applications that use a different voltage class, especially high-voltage industrial systems, the following PowerFlex 755 models can also be considered.

Model / Part Number	Voltage Class	Normal Duty	Heavy Duty	Frame	Braking Configuration	Dimensions	Weight
20G14NF119JA0NNNNN	690 VAC	119 A / 110 kW	98 A / 90 kW	6	Dynamic Braking Transistor	Approx. 308 × 665.5 × 346.4 mm	38.6 kg
20G14NF142JA0NNNNN	690 VAC	142 A / 132 kW	119 A / 110 kW	6	Dynamic Braking Transistor	Approx. 308 × 665.5 × 346.4 mm	38.6 kg
20G14NF171JA0NNNNN	690 VAC	171 A / 160 kW	142 A / 132 kW	7	Dynamic Braking Transistor	Approx. 430 × 881.5 × 349.6 mm	Approx. 72.6–108.9 kg
20G14NF212JA0NNNNN	690 VAC	212 A / 200 kW	171 A / 160 kW	7	Dynamic Braking Transistor	Approx. 430 × 881.5 × 349.6 mm	Approx. 72.6–108.9 kg
20G14NF263JA0NNNNN	690 VAC	263 A / 250 kW	212 A / 200 kW	7	Dynamic Braking Transistor	Approx. 430 × 881.5 × 349.6 mm	Approx. 72.6–108.9 kg

These models are related by product family and application philosophy but are not direct electrical replacements for the 20G14TC750AN0NNNNN.

The voltage class, input arrangement, frame size, current rating, braking configuration, and motor requirements must all be checked before substitution.

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36. Five Popular Allen-Bradley Models

The following models are popular representatives of the same broader drive brand and are useful for comparison across different power ranges.

Model / Part Number	Product Series	Voltage Class	Approx. Current Class	Approx. Power Class	Dimensions	Weight
25B-D017N114	PowerFlex 525	480 VAC Class	17 A	Approx. 7.5 kW Class	Configuration dependent	Configuration dependent
25B-D024N114	PowerFlex 525	480 VAC Class	24 A	Approx. 11 kW Class	Configuration dependent	Configuration dependent
25B-D030N114	PowerFlex 525	480 VAC Class	30 A	Approx. 15 kW Class	Configuration dependent	Configuration dependent
20G11NC5P0JA0NNNNN	PowerFlex 755	480 VAC Class	50 A Class	Approx. 37–45 kW Class	Configuration dependent	Configuration dependent
20G11NC072JA0NNNNN	PowerFlex 755	480 VAC Class	72 A Class	Approx. 55 kW Class	Configuration dependent	Configuration dependent

These models cover a much broader power spectrum than the 20G14TC750AN0NNNNN.

The PowerFlex 525 models are generally more suitable for compact machines and smaller motors.

The PowerFlex 755 models are better suited to larger industrial machines requiring advanced control functionality and higher power capacity.

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37. Small Drive Versus High-Power Drive Selection

A common mistake in industrial drive selection is to choose a drive simply by matching the motor’s nominal kW value.

For high-power equipment, the correct selection should consider:

1. Motor full-load current
2. Motor voltage
3. Duty cycle
4. Starting torque
5. Overload requirements
6. Acceleration time
7. Deceleration time
8. Load inertia
9. Regeneration
10. Ambient temperature
11. Installation altitude
12. Cooling arrangement
13. Motor cable length
14. Harmonic requirements
15. EMC requirements
16. Network requirements

The 20G14TC750AN0NNNNN is most valuable when the application has been evaluated against these factors rather than selected solely because it is a “750 A drive.”

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38. Application Selection Guide

Application	Suitability	Main Consideration
Large Centrifugal Pump	Excellent	Motor current and process flow
Large Fan	Excellent	Variable airflow and thermal management
Cooling-Water Pump	Excellent	Continuous-duty operation
Mining Conveyor	Excellent	Starting torque and inertia
Cement Conveyor	Excellent	Heavy mechanical loading
Crusher	Suitable	Heavy Duty current requirement
Large Mill	Suitable	High torque and regeneration
Compressor	Suitable	Compressor torque characteristics
Paper Machinery	Excellent	Multi-drive architecture
Steel Processing	Excellent	Speed regulation and system integration
Material Handling	Excellent	Acceleration/deceleration profile
Water Treatment	Excellent	Continuous operation and energy efficiency
Dust Collection Fan	Excellent	Variable airflow demand
Industrial Blower	Excellent	Speed control and process demand

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39. Motor Selection Considerations

The motor should be selected according to actual current requirements rather than merely comparing horsepower.

For a large 400 VAC motor, the motor nameplate current can vary significantly depending on motor efficiency, power factor, design, and manufacturer.

Therefore, a motor rated near 400 kW should not automatically be assumed to be compatible with a 750 A drive without checking its full-load current.

The correct process is:

Motor nameplate → motor voltage → motor current → application duty → overload requirement → drive current rating.

For a high-power application, the motor’s actual full-load current is one of the most important pieces of information in the entire selection process.

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40. High-Inertia Load Considerations

Large fans, blowers, flywheels, mills, centrifuges, and other rotating equipment can contain considerable stored energy.

During acceleration, the drive must provide enough torque to bring the machine up to speed.

During deceleration, the stored mechanical energy can return to the electrical system.

This means high-inertia applications should be evaluated for:

• Acceleration time
• Deceleration time
• Regeneration
• Braking requirements
• DC bus voltage
• Thermal loading
• Motor heating
• Mechanical limitations

For an application with frequent rapid stopping, the absence of an internal braking resistor becomes an especially important design consideration.

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41. Installation Considerations

The physical size of the Frame 8 drive means that installation planning is important.

The electrical cabinet should provide sufficient space for:

• Power connections
• Control wiring
• Communication wiring
• Ventilation
• Maintenance access
• Cable routing
• Grounding
• Cooling airflow
• Component replacement

The approximate 2145 mm height should also be considered when planning cabinet-room clearance and transportation routes.

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42. Cabinet Design

A properly designed cabinet should account for the drive’s thermal losses and airflow requirements.

Large drive cabinets often require dedicated ventilation or cooling systems.

The cabinet designer should consider:

• Internal heat generation
• Ambient temperature
• Air inlet temperature
• Exhaust temperature
• Fan capacity
• Filter maintenance
• Airflow direction
• Cable entry
• Grounding
• EMC separation

The cabinet should not be designed around the drive dimensions alone.

A drive that physically fits inside a cabinet may still be unsuitable if there is insufficient cooling or maintenance clearance.

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43. Maintenance Recommendations

For large industrial drives, preventive maintenance is important.

Recommended maintenance areas include:

• Cooling fans
• Air passages
• Cabinet filters
• Electrical connections
• Grounding connections
• DC bus connections
• Power terminals
• Motor connections
• Network connections
• Environmental contamination
• Signs of overheating
• Unusual noise
• Unusual vibration
• Fault history

Dust accumulation can reduce cooling performance.

A high-power drive that operates continuously should therefore be incorporated into the plant’s preventive-maintenance program.

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44. Spare-Parts Planning

Because the 20G14TC750AN0NNNNN is a large industrial drive, spare-parts planning should consider more than simply keeping a complete drive in storage.

A plant may also need to consider:

• Cooling components
• Control components
• Communication components
• Interface components
• Fuses and protection devices
• Replacement power components
• Control wiring
• Appropriate maintenance accessories

For critical production lines, keeping a suitable replacement strategy can significantly reduce downtime.

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45. Why the PowerFlex 755 Platform Is Suitable for Large Industrial Systems

The main strength of the PowerFlex 755 platform is not simply its power rating.

Its value comes from combining:

• High motor current capability
• Multiple duty ratings
• Advanced drive architecture
• Industrial networking
• Common DC bus capability
• Flexible system configuration
• Large-motor application support
• Diagnostics
• Scalable product family

This makes it possible to use a common drive philosophy across an industrial facility containing both medium-sized and very large motor applications.

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46. Five Same-Series Model Selection Reference

Model	LD Current	ND Current	HD Current	LD Power	ND Power	HD Power	Frame	Dimensions	Weight
20G14TC460JN0NNNNN	540 A	460 A	385 A	315 kW	250 kW	200 kW	8	Approx. 2145 × 778 × 421 mm	Approx. 162 kg
20G14TC540JN0NNNNN	585 A	540 A	456 A	315 kW	315 kW	250 kW	8	Approx. 2145 × 778 × 421 mm	Approx. 162 kg
20G14TC567JN0NNNNN	612 A	567 A	472 A	355 kW	315 kW	250 kW	8	Approx. 2145 × 778 × 421 mm	Approx. 162 kg
20G14TC650JN0NNNNN	750 A	650 A	540 A	400 kW	355 kW	315 kW	8	Approx. 2145 × 778 × 421 mm	Approx. 162 kg
20G14TC770JN0NNNNN	832 A	770 A	642 A	450 kW	400 kW	355 kW	8	Approx. 2145 × 778 × 421 mm	Approx. 162 kg

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47. Practical Selection Logic

For a motor requiring approximately 450–500 A under the intended duty, a smaller TC-series drive may be more appropriate.

For approximately 550–650 A Normal Duty, the 650 A model becomes an important candidate.

For applications approaching 700–750 A Normal Duty, the 750 A model becomes attractive.

For applications above 750 A or where additional Heavy Duty capability is required, the 770 A model should be considered.

This approach is more reliable than selecting a drive based solely on motor horsepower.

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48. Product Positioning

The 20G14TC750AN0NNNNN is best positioned as a large industrial high-power common-DC-bus AC drive.

It is not intended for small machinery.

It is designed for installations where motor power is measured in hundreds of kilowatts and where the control system requires industrial-grade drive functionality.

Its most natural market segments include:

• Mining
• Cement
• Water and wastewater
• Steel
• Paper
• Material handling
• Bulk handling
• Large HVAC/process ventilation
• Industrial pumping
• Manufacturing
• Energy and utility systems

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49. Key Advantages at a Glance

Advantage	Description
High Current Capacity	Up to 796 A Light Duty and 750 A Normal Duty
High Power	Approximately 450 kW LD / 400 kW ND
Heavy-Duty Capability	Approximately 315 kW HD
Common DC Bus	Suitable for coordinated multi-drive architectures
Industrial Networking	Embedded EtherNet/IP
Large Motor Support	Designed for high-power industrial motors
Air Cooling	Forced-air cooling architecture
Flexible Duty Ratings	LD, ND, and HD classifications
Industrial Applications	Pumps, fans, conveyors, mining, cement, steel, paper
Scalable Family	Multiple closely related current ratings
Maintenance-Friendly Architecture	Suitable for centralized industrial systems
High-Power Frame	Frame 8 construction

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50. Final Product Specification Table

Category	Final Specification
Model / Part Number	20G14TC750AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Family	PowerFlex 750-Series
Product Type	Air-Cooled AC Drive
Configuration	Common DC Bus
Input	DC Input with Precharge
Nominal DC Bus	540 VDC
AC System	400 VAC
Phase	Three Phase
Light Duty	796 A / 450 kW
Normal Duty	750 A / 400 kW
Heavy Duty	585 A / 315 kW
Frame	8
Enclosure	Open Type
Cooling	Forced Air
Filtering Configuration	AN configuration
Dynamic Braking	No internal braking transistor specified
Internal Braking Resistor	None
HIM	Blank / No HIM
Communication	Embedded EtherNet/IP
Operating Temperature	Approximately 0–50 °C
Relative Humidity	Approximately 5–95%, non-condensing
Storage Temperature	Approximately -40 to +70 °C
Dimensions	Approximately 2145 × 778 × 421 mm
Weight	Approximately 162 kg
Common Applications	Pumps, fans, conveyors, compressors, mining, cement, steel, paper, material handling
Installation Class	Large Industrial
Replacement Consideration	JN configuration is the corresponding current replacement configuration

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51. Final Product Assessment

The Allen-Bradley 20G14TC750AN0NNNNN is a high-capacity PowerFlex 755 drive intended for large industrial motor-control systems.

Its 750 A Normal Duty rating, approximately 400 kW Normal Duty capacity, and 450 kW Light Duty capability make it suitable for demanding applications where conventional compact drives are not large enough.

The Frame 8 mechanical design, approximately 2145 × 778 × 421 mm dimensions, and approximately 162 kg weight reflect its high-power industrial construction.

The combination of common DC bus capability, high current capacity, forced-air cooling, embedded EtherNet/IP, multiple duty classifications, and PowerFlex 755 architecture makes it a strong choice for large-scale industrial automation.

The model is particularly well matched to applications such as large pumps, fans, conveyors, mining machinery, cement equipment, steel-processing systems, paper machinery, compressors, and other high-power rotating equipment.

For selection purposes, the most important values to verify are the motor nameplate current, motor voltage, duty classification, overload requirement, acceleration/deceleration profile, regeneration requirements, ambient conditions, cabinet cooling, and network architecture.

One important catalog-number consideration is the AN configuration. The AN and JN versions should not be treated as interchangeable solely because their current and power ratings are similar. Their filtering and common-mode configuration differs, so the complete system design should be reviewed when replacing an AN-configured unit.

Overall, the 20G14TC750AN0NNNNN represents a large industrial 400 VAC-class PowerFlex 755 common-DC-bus drive with 750 A Normal Duty capability, intended for high-power motor applications where reliability, scalability, network integration, and controlled motor performance are important.

For a replacement or new-project selection, the closest same-series alternatives are the 20G14TC650JN0NNNNN for a lower current requirement and the 20G14TC770JN0NNNNN when additional current or Heavy Duty capacity is needed. For applications using a different voltage class, the 690 VAC PowerFlex 755 models provide another related product group.