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Allen-Bradley 20G14NF171JA0NNNNN PowerFlex 755 AC Drive – Detailed Product Guide

1. Product Overview

The Allen-Bradley 20G14NF171JA0NNNNN is a high-power PowerFlex 755 AC drive designed for large industrial motor-control applications. It is a 690 VAC, three-phase, air-cooled, open-type drive with a Frame 7 mechanical configuration.

This model provides a Normal Duty rating of 171 A / 160 kW and a Heavy Duty rating of 142 A / 132 kW, placing it in the higher-power range of the PowerFlex 755 family.

The drive uses a DC input with precharge configuration and includes factory-installed filtering with the CM jumper installed. It also includes an internal dynamic braking transistor, while the internal braking resistor is not included.

The model is supplied with a blank / no HIM configuration, making it suitable for installations where local keypad operation is not required and the drive is controlled through a PLC, HMI, network, or centralized automation system.

With its high output-current capability and 690 VAC voltage class, the 20G14NF171JA0NNNNN is intended for substantial industrial machinery rather than small standalone equipment. Typical applications include large conveyors, pumps, fans, blowers, compressors, material-handling equipment, process machinery, and other high-power rotating equipment.

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2. Product Identification

Parameter	Specification
Brand	Allen-Bradley
Series	PowerFlex 755
Product Family	PowerFlex 750-Series
Model / Part Number	20G14NF171JA0NNNNN
Product Type	Air-Cooled AC Drive
Product Description	PowerFlex 755 AC Packaged Drive
Voltage Class	690 VAC
Phase	Three Phase
Input Configuration	DC Input with Precharge
Normal Duty Current	171 A
Normal Duty Power	160 kW
Heavy Duty Current	142 A
Heavy Duty Power	132 kW
Frame Size	Frame 7
Enclosure Type	Open Type
Cooling Type	Air Cooled
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	DB Transistor Included
Internal Braking Resistor	Not Included
HIM	Blank / No HIM
Network Capability	Embedded EtherNet/IP capability
Operating Temperature	Approximately 0 to 50 °C
Relative Humidity	Approximately 5–95%, non-condensing
Storage Temperature	Approximately -40 to +70 °C
Width	Approximately 430 mm
Height	Approximately 881.5 mm
Depth	Approximately 349.6 mm
Dimensions	430 × 881.5 × 349.6 mm
Weight	Approximately 72.6–108.9 kg, depending on configuration
Mounting Style	Industrial cabinet / panel installation
Primary Application	High-power industrial motor control

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3. Electrical Specifications

The 20G14NF171JA0NNNNN is designed for high-power three-phase industrial motor applications. Its 690 VAC class makes it particularly appropriate for large motors and industrial electrical systems where higher motor voltage is used.

Electrical Parameter	Specification
Model / Part Number	20G14NF171JA0NNNNN
Voltage Class	690 VAC
Input Phase	Three Phase
Input Type	DC Input with Precharge
Normal Duty Current	171 A
Normal Duty Power	160 kW
Heavy Duty Current	142 A
Heavy Duty Power	132 kW
Frequency	Industrial variable-frequency drive application
Cooling	Air Cooled
Dynamic Braking	Internal DB Transistor
Braking Resistor	External resistor required where applicable
Filtering	Filtered
CM Jumper	Installed
HIM	Blank / No HIM
Communication	Embedded EtherNet/IP capability
Frame	Frame 7
Enclosure	Open Type
Dimensions	430 × 881.5 × 349.6 mm
Weight	72.6–108.9 kg

The most important electrical characteristic is the 171 A Normal Duty rating.

At Normal Duty, the drive is rated for approximately 160 kW.

For Heavy Duty applications, the rating becomes 142 A / 132 kW.

This distinction is important because drive selection should be based on the actual motor current and load profile rather than simply matching the motor nameplate kW.

A machine with a relatively stable load may be suitable for the Normal Duty rating, while a machine with frequent overloads, high starting torque, rapid acceleration, or severe mechanical loading may need to be evaluated using the Heavy Duty rating.

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4. Normal Duty and Heavy Duty Ratings

The two available duty ratings give engineers more flexibility when matching the drive to the application.

Duty Rating	Current	Power
Normal Duty	171 A	160 kW
Heavy Duty	142 A	132 kW

The 160 kW Normal Duty rating makes the drive suitable for large industrial motors operating under normal industrial load conditions.

The 132 kW Heavy Duty rating is more appropriate when the machine has a more demanding torque or overload profile.

When selecting the drive, the motor’s full-load current should be checked first. The actual mechanical load should then be evaluated to determine whether Normal Duty or Heavy Duty operation is appropriate.

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5. Mechanical Specifications

The 20G14NF171JA0NNNNN uses the larger Frame 7 platform.

Mechanical Parameter	Specification
Model / Part Number	20G14NF171JA0NNNNN
Frame	Frame 7
Enclosure	Open Type
Cooling	Air Cooled
Width	Approximately 430 mm
Height	Approximately 881.5 mm
Depth	Approximately 349.6 mm
Overall Dimensions	430 × 881.5 × 349.6 mm
Approximate Weight	72.6–108.9 kg
Mounting	Vertical industrial mounting
Installation	Control cabinet / electrical panel
Cabinet Integration	Required
Ventilation	Required
Service Access	Should be provided
Mechanical Support	Heavy-duty mounting structure recommended

The Frame 7 construction is considerably larger than the Frame 6 drives used in the lower-current portion of the same 690 VAC PowerFlex 755 range.

The approximate dimensions of 430 mm wide, 881.5 mm high, and 349.6 mm deep should be considered when designing the electrical cabinet.

The weight can vary according to the exact configuration, with an approximate range of 72.6 to 108.9 kg.

For this reason, the cabinet mounting plate should be designed to carry the drive safely and should take vibration, cable weight, and maintenance forces into account.

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6. Product Construction

The 20G14NF171JA0NNNNN uses an open-type, air-cooled construction.

This design is intended for installation inside a properly engineered electrical cabinet or control enclosure.

The open-type design allows the drive to be combined with other components such as:

• Circuit protection equipment
• Disconnect equipment
• PLC systems
• Industrial Ethernet equipment
• Terminal blocks
• Control relays
• Contactors
• Line reactors
• Other power-control components

The cabinet must provide suitable environmental protection because the open-type drive itself should not be treated as a sealed outdoor enclosure.

Proper airflow is also important because the drive relies on air cooling to remove heat generated during operation.

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7. Dynamic Braking Configuration

A major difference between the JA0 and JN0 configurations is the dynamic braking arrangement.

The 20G14NF171JA0NNNNN includes an internal dynamic braking transistor.

Braking Feature	20G14NF171JA0NNNNN
Model / Part Number	20G14NF171JA0NNNNN
Dynamic Braking Transistor	Included
Internal Braking Resistor	Not Included
Braking Resistor	External, when required
Suitable for High-Inertia Loads	Yes, subject to engineering
Rapid Deceleration Capability	Improved when correctly configured
Regenerative Energy Handling	Requires application evaluation

The internal braking transistor is useful when the machine needs to dissipate regenerative energy during deceleration.

This can be important for high-inertia machinery where the motor and load continue rotating after the drive commands the motor to slow down.

Typical examples include large rotating equipment, conveyors with significant moving mass, certain material-handling machines, and other applications where deceleration energy can return to the DC bus.

The fact that the transistor is included does not mean that an internal braking resistor is included.

An appropriate external braking resistor and associated protection may be required depending on the amount of regenerative energy generated by the machine.

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8. Comparison With the JN0 Configuration

The same basic 171 A / 160 kW drive is available with a different dynamic braking configuration.

Parameter	JA0 Version	JN0 Version
Model / Part Number	20G14NF171JA0NNNNN	20G14NF171JN0NNNNN
Voltage	690 VAC	690 VAC
Normal Duty	171 A / 160 kW	171 A / 160 kW
Heavy Duty	142 A / 132 kW	142 A / 132 kW
Frame	Frame 7	Frame 7
Cooling	Air Cooled	Air Cooled
Enclosure	Open Type	Open Type
Filtering	Filtered	Filtered
CM Jumper	Installed	Installed
Dynamic Braking Transistor	Included	Not Included
Internal Braking Resistor	Not Included	Not Included
HIM	Blank / No HIM	Blank / No HIM
Dimensions	430 × 881.5 × 349.6 mm	430 × 881.5 × 349.6 mm
Weight	72.6–108.9 kg	72.6–108.9 kg

The JA0 model is the better choice when the application requires the internal dynamic braking transistor.

The JN0 model may be preferable where the braking function is not required or where the braking architecture is handled separately.

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9. Product Introduction

The Allen-Bradley 20G14NF171JA0NNNNN is a high-capacity variable-frequency AC drive designed for industrial applications requiring substantial motor power and dependable speed control.

The 160 kW Normal Duty rating places it in the upper power range of the PowerFlex 755 family.

The 690 VAC three-phase platform is well suited to large industrial installations where motors operate at higher voltage levels.

Its Frame 7 construction reflects the physical size of the electrical hardware required for this power class. Unlike compact machine drives, this unit is normally incorporated into a larger electrical cabinet.

The drive also provides an industrial networking architecture that allows it to become part of a larger control system.

Instead of operating as an isolated speed controller, it can be integrated with PLCs, HMIs, supervisory systems, and other industrial automation equipment.

The absence of a HIM is also useful in centralized control installations where operators interact with the machine through a separate HMI.

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10. Main Applications

10.1 Large Conveyor Systems

Large conveyors are one of the most practical applications for this drive.

Conveyor systems often require controlled acceleration and deceleration because sudden changes in speed can place significant stress on belts, gearboxes, couplings, bearings, and mechanical structures.

The 171 A / 160 kW Normal Duty capacity provides enough power for substantial conveyor machinery.

For applications with large moving masses, the internal braking transistor can also be useful when correctly paired with an external braking resistor.

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10.2 Mining and Bulk Material Handling

Large material-handling systems often require high-power motors.

Applications can include:

• Bulk-material conveyors
• Ore handling systems
• Processing equipment
• Large fans
• Pumps
• Material transfer systems
• Heavy rotating machinery

The 690 VAC platform is well suited to large industrial electrical systems.

For harsh environments, however, the overall cabinet and environmental protection must be designed separately.

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10.3 Large Pumps

Industrial pumps can require considerable motor power, particularly in water processing, industrial circulation, cooling systems, wastewater treatment, and process plants.

Variable-speed operation allows the pump to operate at a speed appropriate to process demand.

This can provide more flexible process control than operating the motor continuously at full speed.

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10.4 Large Fans and Blowers

Large fans and blowers are common in industrial facilities.

Applications include:

• Industrial ventilation
• Process exhaust
• Combustion-air systems
• Dust collection
• Cooling systems
• Industrial furnaces
• Process-air systems

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

For fan and blower applications, engineers should still consider the actual fan curve, minimum speed, motor characteristics, and required operating range.

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10.5 Compressors

The 20G14NF171JA0NNNNN can be considered for large compressor applications where variable-speed operation is supported by the compressor design.

Variable speed can allow compressor output to follow changing process requirements.

However, compressor applications often have specific starting, minimum-speed, lubrication, and acceleration requirements, so the complete compressor package should be evaluated before final selection.

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10.6 Process Machinery

Many large process machines require adjustable-speed motor control.

Examples include:

• Mixers
• Agitators
• Processing lines
• Large rotating machinery
• Industrial production equipment
• Material-processing systems

The drive provides a convenient way to coordinate motor speed with the rest of the production process.

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10.7 Heavy Material Handling

Material-handling systems often require precise speed control and controlled acceleration.

This is especially useful where a sudden motor start could cause mechanical shock.

The drive can provide controlled speed profiles and can be integrated into a larger automation system.

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10.8 High-Inertia Loads

The JA0 braking configuration is particularly relevant to applications where a high-inertia load must be decelerated.

Examples can include:

• Large fans
• Large flywheel-type loads
• Certain conveyors
• Large rotating machinery
• Material-processing equipment

In such applications, the regenerative energy generated during deceleration must be managed correctly.

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11. Main Product Advantages

High 160 kW Normal Duty Capacity

One of the main advantages of this model is its 160 kW Normal Duty rating.

This makes it suitable for large motors and machines that are beyond the practical range of many compact variable-frequency drives.

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690 VAC Industrial Voltage Class

The 690 VAC class is particularly useful for large industrial motor systems.

Using a higher motor voltage can help keep operating current at a practical level for high-power motors.

This can be advantageous when designing large motor feeders, switchgear, cables, and industrial distribution systems.

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Internal Dynamic Braking Transistor

The built-in dynamic braking transistor is one of the defining features of the JA0 configuration.

It provides a means of controlling the braking circuit when an external braking resistor is used.

This can be valuable for applications where rapid deceleration or high-inertia loads generate substantial regenerative energy.

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Air-Cooled Design

The air-cooled architecture provides a practical approach to thermal management.

It avoids the need for a dedicated liquid cooling system and can be integrated into a conventional industrial control cabinet with appropriate ventilation.

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Industrial Network Integration

The PowerFlex 755 platform supports integration into industrial automation networks.

This allows the drive to exchange control commands, operating data, status information, and diagnostic information with the wider control system.

For large automated plants, this can significantly simplify centralized monitoring and control.

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No HIM Configuration

The blank / no-HIM configuration is appropriate for installations where a local operator keypad is unnecessary.

A separate HMI or supervisory control system can be used for operator interaction.

This is common in large automated systems where multiple drives are controlled from a central interface.

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Filtered Configuration

The drive is configured with filtering and the CM jumper installed.

This is useful for industrial installations where the selected EMC/filtering arrangement is required.

Correct grounding, cable routing, motor-cable installation, and cabinet design remain important for overall system performance.

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12. Installation Advantages

The open-type Frame 7 configuration gives system integrators considerable flexibility.

The drive can be installed inside a larger cabinet and combined with other equipment.

This can be useful for custom industrial control panels because the drive does not dictate the complete cabinet architecture.

The main consideration is cabinet size.

At approximately 430 × 881.5 × 349.6 mm, the drive requires significantly more installation space than compact PowerFlex drives.

The weight of approximately 72.6–108.9 kg should also be considered.

A properly reinforced mounting plate and suitable lifting method should be used during installation.

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13. Cabinet Design Considerations

The cabinet designer should consider the following factors:

Design Item	Recommendation
Model / Part Number	20G14NF171JA0NNNNN
Frame	Frame 7
Drive Width	Approximately 430 mm
Drive Height	Approximately 881.5 mm
Drive Depth	Approximately 349.6 mm
Weight	Approximately 72.6–108.9 kg
Mounting	Heavy-duty vertical mounting
Cooling	Adequate forced-air ventilation
Heat Dissipation	Include drive losses in cabinet thermal calculation
Cable Routing	Keep power and control wiring properly organized
Grounding	Follow the applicable drive installation requirements
Service Access	Allow sufficient maintenance space
Braking	Provide external braking resistor when application requires it
Cabinet Protection	Select enclosure according to environmental conditions

The dimensions above should be treated as an important starting point for mechanical layout.

Additional clearance for cable connections, airflow, maintenance, and installation hardware should be included in the actual cabinet design.

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14. Application Advantages

Application	Main Advantage
Large Conveyor	Adjustable speed and controlled acceleration
Mining Conveyor	High-power motor control
Large Pump	Flexible process flow control
Industrial Fan	Adjustable airflow
Large Blower	Variable-speed operation
Compressor	Process output adjustment where supported
Mixer	Controlled motor speed and starting
Material Handling	Smooth acceleration and deceleration
High-Inertia Machinery	Dynamic braking capability
Process Machinery	Integration with centralized automation
Production Line	Networked drive control
Heavy Industrial Equipment	High current and power capacity

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15. Recommended Same-Series Models

The following five models are closely related to the 20G14NF171JA0NNNNN and are useful when selecting a different power rating or braking configuration within the same PowerFlex 755 690 VAC family.

Model / Part Number	Voltage	Normal Duty	Heavy Duty	Frame	Dynamic Braking	Dimensions	Weight
20G14NF098JA0NNNNN	690 VAC, 3 PH	98 A / 90 kW	82 A / 75 kW	Frame 6	DB transistor included	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF119JA0NNNNN	690 VAC, 3 PH	119 A / 110 kW	98 A / 90 kW	Frame 6	DB transistor included	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF142JA0NNNNN	690 VAC, 3 PH	142 A / 132 kW	119 A / 110 kW	Frame 6	DB transistor included	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF171JA0NNNNN	690 VAC, 3 PH	171 A / 160 kW	142 A / 132 kW	Frame 7	DB transistor included	430 × 881.5 × 349.6 mm	72.6–108.9 kg
20G14NF212JA0NNNNN	690 VAC, 3 PH	212 A / 200 kW	171 A / 160 kW	Frame 7	DB transistor included	430 × 881.5 × 349.6 mm	72.6–108.9 kg

The 20G14NF098JA0NNNNN is appropriate when the motor requirement is around the 90 kW Normal Duty range.

The 20G14NF119JA0NNNNN provides a 110 kW Normal Duty rating.

The 20G14NF142JA0NNNNN moves up to 132 kW Normal Duty and remains in Frame 6.

The 20G14NF171JA0NNNNN is the direct 160 kW Normal Duty model covered in this guide.

The 20G14NF212JA0NNNNN provides another step up, reaching 200 kW Normal Duty.

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16. Same-Series JN0 Alternatives

For applications that do not require the internal dynamic braking transistor, JN0 versions can be considered.

Model / Part Number	Voltage	Normal Duty	Heavy Duty	Frame	Dynamic Braking	Dimensions	Weight
20G14NF098JN0NNNNN	690 VAC, 3 PH	98 A / 90 kW	82 A / 75 kW	Frame 6	None	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF119JN0NNNNN	690 VAC, 3 PH	119 A / 110 kW	98 A / 90 kW	Frame 6	None	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF142JN0NNNNN	690 VAC, 3 PH	142 A / 132 kW	119 A / 110 kW	Frame 6	None	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF171JN0NNNNN	690 VAC, 3 PH	171 A / 160 kW	142 A / 132 kW	Frame 7	None	430 × 881.5 × 349.6 mm	72.6–108.9 kg
20G14NF212JN0NNNNN	690 VAC, 3 PH	212 A / 200 kW	171 A / 160 kW	Frame 7	None	430 × 881.5 × 349.6 mm	72.6–108.9 kg

The JN0 versions provide the same general power progression while removing the internal dynamic braking transistor.

This can be a practical alternative when braking requirements are limited or when the braking function is handled elsewhere in the system.

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17. Power Rating Comparison Within the 690 VAC Family

The following table shows how the 171 A model fits into the broader 690 VAC PowerFlex 755 range.

Model / Part Number	Normal Duty Current	Normal Duty Power	Heavy Duty Current	Heavy Duty Power	Frame	Dimensions	Weight
20G14NF034JA0NNNNN	34 A	30 kW	30 A	22 kW	Frame 6	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF046JA0NNNNN	46 A	37 kW	34 A	30 kW	Frame 6	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF050JA0NNNNN	50 A	45 kW	46 A	37 kW	Frame 6	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF061JA0NNNNN	61 A	55 kW	50 A	45 kW	Frame 6	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF082JA0NNNNN	82 A	75 kW	61 A	55 kW	Frame 6	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF098JA0NNNNN	98 A	90 kW	82 A	75 kW	Frame 6	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF119JA0NNNNN	119 A	110 kW	98 A	90 kW	Frame 6	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF142JA0NNNNN	142 A	132 kW	119 A	110 kW	Frame 6	308.0 × 665.5 × 346.4 mm	38.6 kg
20G14NF171JA0NNNNN	171 A	160 kW	142 A	132 kW	Frame 7	430 × 881.5 × 349.6 mm	72.6–108.9 kg
20G14NF212JA0NNNNN	212 A	200 kW	171 A	160 kW	Frame 7	430 × 881.5 × 349.6 mm	72.6–108.9 kg
20G14NF263JA0NNNNN	263 A	250 kW	212 A	200 kW	Frame 7	430 × 881.5 × 349.6 mm	72.6–108.9 kg

This table shows that the 20G14NF171JA0NNNNN is the point where the product family moves from the Frame 6 platform into the larger Frame 7 mechanical platform.

That change matters during system design.

The electrical power increases from 132 kW to 160 kW Normal Duty, but the physical dimensions and weight also increase substantially.

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18. Five Popular Models From the Same Brand

The following five models are useful alternatives when a project requires a different power range or a more compact drive platform.

Model / Part Number	Series	Voltage Class	Current / Power Class	Typical Application	Dimensions	Weight
25B-D017N114	PowerFlex 525	480 VAC class	17 A class / approximately 7.5 kW class	General machine control, pumps, fans, conveyors	Configuration dependent	Configuration dependent
25B-D024N114	PowerFlex 525	480 VAC class	24 A class / approximately 11 kW class	Industrial machinery and process control	Configuration dependent	Configuration dependent
25B-D030N114	PowerFlex 525	480 VAC class	30 A class / approximately 15 kW class	Pumps, fans, conveyors, machine automation	Configuration dependent	Configuration dependent
20G11NC5P0JA0NNNNN	PowerFlex 755	480 VAC class	50 A class / approximately 37–45 kW class	Large industrial motor control	Configuration dependent	Configuration dependent
20G11NC072JA0NNNNN	PowerFlex 755	480 VAC class	72 A class / approximately 55 kW class	Process machinery and heavy industrial equipment	Configuration dependent	Configuration dependent

For these five popular models, the exact mechanical dimensions and weight can vary according to the specific frame, voltage configuration, enclosure arrangement, cooling method, and installed options.

For cabinet fabrication or shipping calculations, the exact catalog number should always be matched to the corresponding mechanical drawing.

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19. Comparison With Smaller PowerFlex Drives

The 20G14NF171JA0NNNNN is considerably more powerful than compact general-purpose drives.

Product	Typical Power Range	Typical Role	Relative Size
25B-D017N114	Around 7.5 kW class	Compact machine control	Small
25B-D024N114	Around 11 kW class	General industrial control	Small
25B-D030N114	Around 15 kW class	Pumps, fans, conveyors	Small / Medium
20G11NC5P0JA0NNNNN	Around 37–45 kW class	Larger industrial equipment	Medium / Large
20G11NC072JA0NNNNN	Around 55 kW class	Process and heavy machinery	Large
20G14NF171JA0NNNNN	160 kW ND / 132 kW HD	High-power industrial motor control	Very Large

The main reason to choose the 20G14NF171JA0NNNNN instead of a smaller drive is simple: the motor and load require a significantly higher current and power rating.

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20. Communication and Automation Integration

The PowerFlex 755 platform is designed to operate as part of a larger industrial automation system.

The 20G14NF171JA0NNNNN can therefore be incorporated into systems containing:

• PLC controllers
• HMIs
• SCADA systems
• Industrial Ethernet networks
• Motor-control centers
• Distributed control architectures
• Production-line control systems
• Process-control systems

The embedded network capability can reduce the need for separate hardwired signals for every drive function.

For example, a supervisory system can be used to manage motor speed commands, operating status, fault information, and other drive data.

This is particularly useful when many large drives are installed throughout a production facility.

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21. Maintenance Considerations

Because the 20G14NF171JA0NNNNN is a large industrial drive, maintenance planning should begin at the cabinet-design stage.

The cabinet should allow technicians enough room to inspect connections, cooling equipment, wiring, and associated components.

Airflow paths should be kept clean and unobstructed.

Dust accumulation can reduce cooling performance, especially in industrial environments where airborne particles are present.

Electrical connections should be maintained according to the applicable installation and maintenance requirements.

The dynamic braking system should also be inspected as part of the overall drive system when braking is used regularly.

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22. Environmental Considerations

Environmental Parameter	Specification / Consideration
Model / Part Number	20G14NF171JA0NNNNN
Operating Temperature	Approximately 0 to 50 °C
Relative Humidity	Approximately 5–95%, non-condensing
Storage Temperature	Approximately -40 to +70 °C
Cooling	Air Cooled
Enclosure	Open Type
Cabinet Requirement	Yes
Condensation	Must be avoided
Dust Protection	Determined by the overall cabinet
Corrosive Environment	Requires appropriate enclosure and environmental evaluation
Ventilation	Required
Installation Location	Suitable industrial electrical enclosure

The drive’s environmental rating should not be confused with the rating of the complete machine enclosure.

Because the drive is open type, the cabinet or enclosure must provide the necessary environmental protection for the actual installation location.

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23. Selection Guide

The 20G14NF171JA0NNNNN is particularly appropriate when most of the following conditions apply:

Selection Requirement	20G14NF171JA0NNNNN
690 VAC system	Yes
Three-phase industrial motor	Yes
Motor power around 160 kW ND	Yes
Heavy Duty requirement around 132 kW	Yes
Large industrial machine	Yes
Air-cooled installation	Yes
Cabinet-mounted drive	Yes
Dynamic braking required	Suitable
Internal DB transistor required	Yes
Local HIM not required	Yes
Industrial network integration	Suitable
Frame 7 acceptable	Yes

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24. When This Model May Not Be the Best Choice

Despite its high capacity, the 20G14NF171JA0NNNNN is not automatically the right choice for every motor-control application.

A smaller PowerFlex model may be more appropriate if the motor is significantly below the 160 kW class.

A different drive configuration may also be preferable if the installation requires a different input architecture, enclosure type, cooling arrangement, environmental protection level, or braking system.

If dynamic braking is not needed, the corresponding JN0 configuration may be worth considering.

If the installation requires a compact machine-mounted drive, a smaller PowerFlex family may provide a more practical mechanical solution.

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25. Key Benefits at a Glance

Benefit	Description
High Power	160 kW Normal Duty capacity
High Current	171 A Normal Duty output
Heavy Duty Capability	142 A / 132 kW
690 VAC Class	Suitable for high-power industrial systems
Dynamic Braking	Internal DB transistor included
Air Cooling	Practical cabinet-based thermal management
Industrial Networking	Suitable for integrated automation
Open Type	Flexible cabinet integration
No HIM	Useful for centralized control architectures
Filtering	Filtered configuration with CM jumper installed
Frame 7	Suitable for higher-power drive applications
Broad Application Range	Pumps, fans, conveyors, compressors, process machinery, and more

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26. Final Technical Specification

Parameter	Final Specification
Model / Part Number	20G14NF171JA0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Family	PowerFlex 750-Series
Product	PowerFlex Air-Cooled 755 AC Drive
Voltage	690 VAC
Phase	Three Phase
Input Type	DC Input with Precharge
Normal Duty Current	171 A
Normal Duty Power	160 kW
Heavy Duty Current	142 A
Heavy Duty Power	132 kW
Frame Size	Frame 7
Enclosure Type	Open Type
Cooling	Air Cooled
Filtering	Filtered
CM Jumper	Installed
Dynamic Braking	DB Transistor Included
Internal Braking Resistor	Not Included
HIM	Blank / No HIM
Network	Embedded EtherNet/IP capability
Operating Temperature	Approximately 0–50 °C
Relative Humidity	Approximately 5–95%, non-condensing
Storage Temperature	Approximately -40 to +70 °C
Width	Approximately 430 mm
Height	Approximately 881.5 mm
Depth	Approximately 349.6 mm
Dimensions	430 × 881.5 × 349.6 mm
Weight	Approximately 72.6–108.9 kg
Mounting	Industrial cabinet / panel
Main Application	High-power AC motor control

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27. Final Product Assessment

The Allen-Bradley 20G14NF171JA0NNNNN is a high-power PowerFlex 755 AC drive intended for demanding industrial motor-control systems.

Its 690 VAC three-phase platform, 171 A / 160 kW Normal Duty rating, and 142 A / 132 kW Heavy Duty rating make it suitable for large motors used in heavy industrial equipment.

The Frame 7 air-cooled open-type construction provides a practical platform for cabinet-based installations, although the larger physical dimensions and higher weight need to be considered carefully during mechanical design.

The built-in dynamic braking transistor is an important advantage for applications where controlled deceleration and regenerative-energy management are required. An appropriate external braking resistor is still required where the application demands one.

The filtered configuration with the CM jumper installed provides a defined electrical configuration for system integration, while the blank / no-HIM configuration is well suited to centralized PLC, HMI, and network-based control.

The drive’s approximate mechanical size of 430 × 881.5 × 349.6 mm and weight range of 72.6–108.9 kg clearly place it in the large industrial drive category.

For applications requiring a lower power rating, the 98 A, 119 A, and 142 A models in the same 690 VAC family provide useful alternatives. For applications requiring more capacity, the 212 A and 263 A models extend the same family into higher-power operation.

Overall, the 20G14NF171JA0NNNNN is best suited to large conveyors, pumps, fans, blowers, compressors, process machinery, material-handling equipment, and other high-power industrial applications where reliable variable-speed motor control and dynamic braking capability are important.