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20G11NC043JA0NNNNN — PowerFlex 755 AC Drive

1. Product Overview

The 20G11NC043JA0NNNNN is a PowerFlex 755 series air-cooled AC variable frequency drive designed for industrial three-phase motor control.

It is a 400 V AC, three-phase, 43 A drive with a 22 kW normal-duty rating and an 18.5 kW heavy-duty rating. The unit uses a Frame 3 mechanical configuration and an open IP20/IP00 construction intended for installation in a suitable electrical enclosure.

The drive is equipped with an integrated EtherNet/IP communication interface, an internal dynamic-braking transistor, EMC filtering, DC terminals and forced-air cooling.

This combination makes the drive suitable for industrial machinery where adjustable motor speed, controlled acceleration and deceleration, network communication, diagnostics and flexible motor-control functions are required.

The model is particularly suitable for medium-power applications such as conveyors, pumps, fans, blowers, mixers, material-handling equipment and general process machinery.

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2. Product Identification

Parameter	Specification
Model	20G11NC043JA0NNNNN
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Drive Type	Air-Cooled AC Drive
Input Voltage Class	400 V AC
Input Phase	Three Phase
Normal-Duty Current	43 A
Normal-Duty Power	22 kW
Normal-Duty Horsepower	Approximately 30 HP
Heavy-Duty Current	Approximately 37 A
Heavy-Duty Power	18.5 kW
Frame Size	Frame 3
Enclosure	IP20/IP00
Enclosure Type	NEMA/UL Open Type
Cooling	Forced Air
Communication	Embedded EtherNet/IP
Input Configuration	AC Input with Precharge and DC Terminals
EMC Filtering	Filtered
CM Capacitor Configuration	Jumper Installed
Dynamic Braking	Internal DB Transistor
HIM	Blank / No HIM
Mounting	Panel Mount
Height	454 mm
Width	190 mm
Depth	212 mm
Weight	Approximately 12 kg
Weight (kg)	12 kg

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3. Brand

The product brand is Allen-Bradley.

The model belongs to the industrial automation and motor-control product range associated with the Allen-Bradley name.

In practical terms, the brand is well known for programmable control, variable frequency drives, motor starters, industrial networking, safety equipment and automation components.

For this particular product, the brand is important because the drive is designed to work as part of an integrated industrial automation environment, particularly where networked motor control and centralized diagnostics are required.

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4. Product Series

The 20G11NC043JA0NNNNN belongs to the:

PowerFlex 755 Series

The PowerFlex 755 is an advanced industrial AC drive platform intended for applications that require considerably more functionality than a basic variable-speed drive.

The series supports applications involving:

• Speed control
• Torque control
• Vector control
• Process control
• Position-related applications
• Networked motor control
• Dynamic braking
• Advanced diagnostics
• Optional feedback
• Optional safety functions
• Industrial Ethernet communication

The PowerFlex 755 architecture is particularly useful when the drive is expected to communicate with a larger machine-control system rather than operate as an isolated motor controller.

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5. Model Number Explanation

The catalog number 20G11NC043JA0NNNNN contains several configuration elements that identify the drive’s basic electrical and mechanical characteristics.

Model Code	General Meaning
20G	PowerFlex 755 drive family
1	AC input with precharge and DC terminals
N	IP20/IP00 open-type construction
C	400 V AC voltage class
043	43 A normal-duty current class
J	Filtered configuration with CM jumper installed
A	Internal dynamic-braking transistor
0	No door-mounted HIM
NNNNN	Standard/default configuration positions

The most important electrical portion is 043, which identifies the 43 A normal-duty current class.

The C voltage designation places the drive in the 400 V AC three-phase class.

The J configuration indicates the filtered arrangement with the CM capacitor jumper installed.

The A configuration indicates the presence of the internal dynamic-braking transistor.

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6. Main Electrical Specifications

Electrical Parameter	Specification
Model	20G11NC043JA0NNNNN
Nominal Input Voltage	400 V AC
Input Phase	3 Phase
Input Frequency	50/60 Hz class
Normal-Duty Current	43 A
Normal-Duty Power	22 kW
Normal-Duty Horsepower	Approx. 30 HP
Heavy-Duty Current	Approx. 37 A
Heavy-Duty Power	18.5 kW
Output Type	Variable-frequency three-phase AC
DC Terminals	Yes
Precharge	Yes
Dynamic Braking	Yes
Braking Transistor	Internal
EMC Filter	Yes
Cooling	Forced Air
Frame	Frame 3
Enclosure	IP20/IP00

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7. Normal-Duty Rating

The normal-duty rating of the 20G11NC043JA0NNNNN is:

43 A / 22 kW / approximately 30 HP

This rating makes the drive suitable for motors in the 22 kW class when the motor’s actual full-load current and application duty fall within the drive’s specified limits.

Normal-duty applications commonly include fans, pumps, conveyors and other machinery where the motor does not continuously experience severe overload conditions.

The 43 A rating gives the model additional capacity compared with 22 A, 30 A and 37 A drive configurations.

Normal-Duty Specification	Value
Model	20G11NC043JA0NNNNN
Current	43 A
Power	22 kW
Horsepower	Approx. 30 HP
Voltage Class	400 V AC
Phase	Three Phase
Cooling	Forced Air
Frame	Frame 3

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8. Heavy-Duty Rating

For heavy-duty applications, the drive is rated at approximately:

37 A / 18.5 kW

This distinction is important.

A drive cannot be selected simply by looking at the motor’s horsepower. The motor’s actual nameplate current, overload requirement, acceleration requirement and load characteristics must also be considered.

Heavy-duty applications may include equipment that experiences higher starting torque, frequent acceleration and deceleration, or substantial mechanical loading.

Heavy-Duty Specification	Value
Model	20G11NC043JA0NNNNN
Heavy-Duty Current	Approx. 37 A
Heavy-Duty Power	18.5 kW
Voltage Class	400 V AC
Phase	Three Phase
Suitable Loads	Higher-torque industrial machinery
Overload Capability	Application dependent

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9. Dimensions

The physical configuration is Frame 3.

The commonly specified overall dimensions are:

454 mm height × 190 mm width × 212 mm depth

These dimensions provide the approximate drive-body envelope.

Mechanical Parameter	Specification
Model	20G11NC043JA0NNNNN
Frame Size	Frame 3
Height	454 mm
Width	190 mm
Depth	212 mm
Approx. Volume	Approx. 18.3 L
Mounting	Panel Mount
Cooling	Forced Air
Enclosure	IP20/IP00
Construction	Open Type

The dimensions should not be interpreted as the minimum cabinet dimensions.

Additional space is required for power wiring, control wiring, network connections, ventilation and maintenance access.

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10. Weight

The commonly specified product weight is approximately:

12 kg

This refers to the drive itself rather than the complete shipping package.

The packaged weight can be higher because of cartons, protective material, documentation and other packaging components.

Weight Information	Specification
Model	20G11NC043JA0NNNNN
Product Weight	Approximately 12 kg
Weight (kg)	12 kg
Shipping Weight	Higher than product weight
Frame	Frame 3

For equipment handling and cabinet structural calculations, the actual delivered unit should be checked if accessories or optional modules are installed.

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11. Environmental Specifications

Environmental Parameter	Typical Specification
Model	20G11NC043JA0NNNNN
Operating Temperature	Approximately -20 to +60 °C, application dependent
Typical Non-Derated Range	Approximately -20 to +50 °C
Storage Temperature	Approximately -40 to +70 °C
Humidity	Up to 95% non-condensing class
Cooling	Forced Air
Enclosure	IP20/IP00
Installation	Indoor / protected electrical enclosure
Altitude	Approximately 1,000 m without typical altitude derating
Corrosive Gas Protection	Standard protection

The exact environmental limits depend on installation configuration, altitude, load, cooling conditions and derating requirements.

Because the unit is an open-type drive, it should be protected from dust, moisture, corrosive gases and other environmental conditions that exceed its enclosure rating.

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12. Communication Function

One of the major advantages of the 20G11NC043JA0NNNNN is the integrated EtherNet/IP interface.

This allows the drive to communicate with an industrial controller or automation network without requiring a separate basic communication interface for normal networked control.

Typical network data can include:

Network Function	Capability
Model	20G11NC043JA0NNNNN
Start Command	Yes
Stop Command	Yes
Speed Reference	Yes
Direction Command	Yes
Drive Status	Yes
Fault Information	Yes
Alarm Information	Yes
Output Current Monitoring	Yes
Frequency Monitoring	Yes
Parameter Access	Supported
Reset Command	Supported
Industrial Network Integration	Yes

This can significantly simplify the control architecture of an automated machine.

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13. Dynamic Braking

The model includes an internal dynamic-braking transistor.

Dynamic braking is useful when the motor and connected machine need to decelerate quickly.

When a motor decelerates, energy can return to the drive’s DC bus.

A suitable braking resistor arrangement can dissipate this energy and allow controlled deceleration.

This is particularly valuable for equipment with significant rotational inertia.

Typical applications include:

• High-inertia conveyors
• Material-handling equipment
• Centrifugal machinery
• Mixers
• Certain hoisting systems
• Rapid-stop machinery
• Rotating process equipment

Braking Parameter	Specification
Model	20G11NC043JA0NNNNN
Dynamic Braking	Yes
Internal DB Transistor	Yes
External Braking Resistor	Application dependent
Rapid Deceleration	Supported
High-Inertia Loads	Suitable
Braking Configuration	Must be selected according to application

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14. EMC Filtering

The model has a filtered configuration and the CM jumper is installed.

The EMC filter helps control certain conducted electrical disturbances associated with variable frequency drive operation.

However, proper EMC performance also depends on the complete installation.

Important considerations include:

• Motor cable type
• Cable length
• Shielding
• Grounding
• Cabinet construction
• Cable routing
• Separation between power and control cables
• Motor grounding
• Installation practices

The integrated filtering therefore works as part of the overall electrical installation rather than being a substitute for correct wiring and grounding.

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15. Motor-Control Capability

The PowerFlex 755 platform is designed for advanced motor control.

Depending on the application and selected configuration, the drive can support several control approaches.

V/Hz Control

V/Hz control is commonly used for relatively straightforward variable-speed applications.

Typical examples include:

• Fans
• Pumps
• Blowers
• Simple conveyors

Sensorless Vector Control

Sensorless vector control provides improved speed and torque performance compared with simple V/Hz control.

It can be useful where load changes are significant or better speed regulation is required.

Voltage Vector Control

Voltage vector control can provide additional control flexibility for industrial motor applications.

Permanent-Magnet Motor Control

Suitable configurations can also support permanent-magnet motor applications.

Feedback-Based Control

Additional feedback hardware can be used where the application requires more precise speed or position control.

Potential applications include:

• Winding machinery
• Positioning equipment
• Hoisting systems
• Precision conveyors
• High-performance machinery

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16. Product Introduction

The 20G11NC043JA0NNNNN is a medium-power industrial variable frequency drive designed to regulate the operation of three-phase AC motors.

Rather than connecting a motor directly to a fixed-frequency electrical supply, the drive provides controlled voltage and frequency to the motor.

This allows the motor to accelerate smoothly, operate at adjustable speeds and decelerate according to programmed requirements.

The drive can also communicate operating conditions to the machine-control system.

This makes it possible to integrate motor control, diagnostics and process commands into a larger automated production system.

The 22 kW normal-duty rating is particularly useful for industrial equipment that requires more capacity than smaller 11 kW or 15 kW drives but does not require a substantially larger drive.

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17. Main Applications

Conveyor Systems

Conveyors frequently require adjustable speed.

A production line may operate at different speeds depending on the product, process stage or production rate.

The drive can provide controlled acceleration and deceleration, reducing sudden mechanical loading.

This can help reduce stress on:

• Belts
• Gearboxes
• Couplings
• Rollers
• Shafts
• Mechanical supports

The integrated EtherNet/IP connection is also useful when conveyor speed needs to be coordinated with other equipment.

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Pump Systems

The drive can be used for industrial pumping applications.

Variable-speed operation allows the pump motor to operate according to process requirements rather than continuously operating at maximum speed.

Typical applications include:

• Water circulation
• Industrial process pumps
• Cooling systems
• Fluid transfer
• Pressure-control systems
• Treatment equipment

For pump applications, process control functions such as PID can be particularly useful.

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Fan Systems

Industrial fans frequently operate under changing airflow requirements.

Instead of operating continuously at full speed, the motor can be controlled at a suitable speed.

This can improve process flexibility and may reduce unnecessary energy consumption.

Applications include:

• Industrial ventilation
• Exhaust systems
• Cooling systems
• Air handling
• Process ventilation

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Blowers

Blowers can require different airflow levels depending on the production process.

The drive can adjust motor speed according to the required operating point.

Potential applications include:

• Pneumatic conveying
• Process air
• Industrial ventilation
• Manufacturing systems
• Material-processing equipment

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Mixers

Industrial mixers can experience substantial load variations.

A mixer may require relatively low torque during one stage of operation and significantly higher torque during another stage.

The drive can provide controlled acceleration, adjustable running speed and controlled stopping.

For high-torque mixers, the heavy-duty rating should be compared carefully with the motor nameplate current.

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Material Handling

Material-handling machinery can benefit significantly from controlled acceleration and deceleration.

Smooth speed control can help reduce:

• Mechanical shock
• Product movement
• Belt stress
• Gearbox stress
• Coupling stress
• Unnecessary wear

The network interface also makes it easier to coordinate material-handling equipment with automated production systems.

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18. Main Product Advantages

18.1 22 kW Normal-Duty Rating

The 22 kW normal-duty rating gives the drive enough capacity for many medium-sized industrial motors.

This makes it a practical selection for applications that are above the 15 kW class.

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18.2 18.5 kW Heavy-Duty Rating

The 18.5 kW heavy-duty rating provides additional application flexibility.

The drive can therefore be used for applications that require greater overload capability than ordinary fan or pump applications.

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18.3 43 A Output Rating

The 43 A current rating is an important advantage when selecting a drive based on motor nameplate current.

Current rating should always be checked alongside motor power because two motors with the same nominal horsepower can have different current requirements.

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18.4 Integrated EtherNet/IP

The built-in EtherNet/IP connection makes network integration easier.

It allows the drive to become part of the machine’s automation network.

Commands and operating information can be transferred digitally, reducing the need for extensive hardwired control circuits.

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18.5 Internal Dynamic Braking

The internal braking transistor is particularly useful for applications that need controlled deceleration.

It provides additional flexibility for high-inertia loads.

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18.6 EMC Filtering

The integrated filtered configuration helps support electromagnetic compatibility requirements.

This is useful in industrial installations containing sensitive electronic control equipment.

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18.7 Modular Architecture

The PowerFlex 755 platform provides a modular structure that can accommodate suitable option modules.

Depending on the configuration, the platform can be expanded for functions such as:

• Feedback
• Encoder interfaces
• Additional communications
• I/O
• Safety
• Application-specific functions

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18.8 Advanced Diagnostics

The drive can provide information about operating conditions and fault states.

This can make troubleshooting easier.

Potential diagnostic conditions include:

• Overcurrent
• Overvoltage
• Undervoltage
• Motor overload
• Ground fault
• Overtemperature
• Communication faults
• Configuration errors

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19. Advantages Summary

Feature	Practical Advantage
Model	20G11NC043JA0NNNNN
43 A Rating	Suitable for medium-power motors
22 kW ND	Strong capacity for general machinery
18.5 kW HD	Suitable for demanding applications
400 V AC	Common industrial voltage class
EtherNet/IP	Easy network integration
Dynamic Braking	Controlled deceleration
EMC Filtering	Supports EMC requirements
Frame 3	Compact medium-power construction
Forced Air	Effective thermal management
Modular Design	Expandable functions
Diagnostics	Easier maintenance
Variable Speed	Flexible process control

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20. Five Same-Series or Closely Related Models

The following five models are useful comparison choices within the same PowerFlex 755 family and nearby power ranges.

Model	Series	Voltage Class	Normal-Duty Current	Normal-Duty Power	Heavy-Duty Power	Frame	Dimensions	Weight (kg)
20G11NC022JA0NNNNN	PowerFlex 755	400 V	22 A class	11 kW	7.5 kW class	Frame 2	Model dependent	Approx. 8–10
20G11NC030JA0NNNNN	PowerFlex 755	400 V	30 A class	15 kW	11 kW class	Frame 3	Model dependent	Approx. 10–12
20G11NC037JA0NNNNN	PowerFlex 755	400 V	37 A class	18.5 kW	15 kW class	Frame 3	Approx. 454 × 190 × 212 mm	Approx. 12
20G11NC043JA0NNNNN	PowerFlex 755	400 V	43 A	22 kW	18.5 kW	Frame 3	454 × 190 × 212 mm	12
20G11NC060JA0NNNNN	PowerFlex 755	400 V	60 A class	30 kW class	22 kW class	Larger frame	Model dependent	Approx. 20+

The exact alternative should be selected using the motor’s actual current and duty requirements rather than simply selecting the closest horsepower rating.

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21. Same-Series Comparison

Parameter	20G11NC022JA0NNNNN	20G11NC030JA0NNNNN	20G11NC037JA0NNNNN	20G11NC043JA0NNNNN	20G11NC060JA0NNNNN
Product Series	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755	PowerFlex 755
Voltage Class	400 V	400 V	400 V	400 V	400 V
ND Current	~22 A	~30 A	~37 A	43 A	~60 A
ND Power	11 kW	15 kW	18.5 kW	22 kW	~30 kW
HD Power	~7.5 kW	~11 kW	~15 kW	18.5 kW	~22 kW
Frame	2	3	3	3	Larger
EtherNet/IP	Yes	Yes	Yes	Yes	Yes
Dynamic Braking	Yes	Yes	Yes	Yes	Yes
EMC Filter	Yes	Yes	Yes	Yes	Yes
Cooling	Forced Air	Forced Air	Forced Air	Forced Air	Forced Air

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22. Five Same-Brand Popular Models

The following models represent additional popular drive configurations from the same brand and can be considered for different motor sizes and application requirements.

Model	Product Series	Voltage Class	Typical Power Range	Main Application	Cooling	Dimensions	Weight (kg)
25B-D010N104	PowerFlex 525	480 V class	Small/medium	Pumps, fans, conveyors	Air	Model dependent	Approx. 3–5
25B-D017N104	PowerFlex 525	480 V class	Medium	General machinery	Air	Model dependent	Approx. 4–6
25B-D027N114	PowerFlex 525	480 V class	Medium	Conveyors, pumps, fans	Air	Model dependent	Approx. 5–8
20F11ND077AA0NNNNN	PowerFlex 753	480 V class	Higher-power	Industrial machinery	Air	Model dependent	Approx. 20+
20G11NC043JA0NNNNN	PowerFlex 755	400 V class	22 kW ND	Advanced industrial machinery	Forced Air	454 × 190 × 212 mm	12

These models are not all direct replacements for the 20G11NC043JA0NNNNN.

The correct replacement must match voltage, motor current, duty rating, enclosure, communication, braking, control mode, mechanical dimensions and required options.

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23. Application Suitability

Application	Suitability	Main Reason
Conveyors	Excellent	Adjustable speed and controlled acceleration
Pumps	Excellent	Variable-speed process control
Fans	Excellent	Adjustable airflow
Blowers	Excellent	Flexible speed control
Mixers	Very Good	Speed and torque control
Material Handling	Excellent	Smooth acceleration/deceleration
Packaging Machinery	Very Good	Network integration
Process Machinery	Excellent	Flexible motor control
General Industrial Equipment	Excellent	Broad control capability
High-Inertia Equipment	Very Good	Dynamic braking
Positioning Applications	Very Good	Advanced control and optional feedback
Torque-Control Applications	Very Good	Vector-control capability

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24. Conveyor Application

For a conveyor driven by a motor around the 22 kW range, the drive can provide a controlled acceleration profile.

Instead of immediately applying full-speed operation, the motor can be ramped gradually.

This reduces the mechanical shock that can occur during direct starting.

The drive can also provide different operating speeds according to the production process.

For example, a conveyor could operate at a lower speed during product loading and increase speed during transportation.

The integrated network connection can allow the conveyor drive to receive commands from the main automation controller.

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25. Pump Application

The 20G11NC043JA0NNNNN can be used for industrial pump applications where the motor needs adjustable speed.

The pump does not necessarily have to operate continuously at maximum speed.

A process controller can adjust motor speed according to pressure, flow or other process variables.

The drive’s process-control capabilities can be useful in closed-loop applications.

This approach can provide more flexible process control than a fixed-speed motor arrangement.

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26. Fan Application

Large industrial fans can require significant motor power.

The 22 kW normal-duty rating makes this drive suitable for many medium-sized industrial ventilation systems.

The motor speed can be adjusted according to the required airflow.

Applications can include:

• Factory ventilation
• Exhaust systems
• Cooling systems
• Process-air systems
• Industrial air handling

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27. Mixer Application

Industrial mixers often have changing mechanical loads.

During startup, the mixer may require higher torque.

As the material reaches operating conditions, the load can change.

The drive can provide a controlled acceleration ramp and adjustable operating speed.

The heavy-duty rating should be evaluated carefully for applications with substantial starting torque or repeated overload.

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28. Material-Handling Application

Material-handling systems benefit from controlled movement.

A drive can reduce sudden acceleration and deceleration.

This can help protect:

• Gearboxes
• Belts
• Shafts
• Couplings
• Rollers
• Mechanical structures

It can also improve the handling of products that could be damaged by sudden movement.

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29. Installation Requirements

The drive uses an IP20/IP00 open-type enclosure.

Therefore, it is generally intended for installation inside an appropriate electrical cabinet or protected control panel.

The installation should provide adequate:

• Ventilation
• Heat dissipation
• Environmental protection
• Grounding
• Power wiring clearance
• Control wiring clearance
• Network wiring clearance
• Service access
• Mounting strength

The drive’s physical dimensions are approximately:

454 mm × 190 mm × 212 mm

However, the cabinet must be larger than this basic product envelope.

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30. Cabinet Design Considerations

Item	Design Consideration
Model	20G11NC043JA0NNNNN
Height	454 mm
Width	190 mm
Depth	212 mm
Product Weight	12 kg
Weight (kg)	12 kg
Installation Orientation	Normally vertical
Cooling	Forced Air
Cabinet Ventilation	Required
Service Clearance	Required
Power Cable Space	Required
Control Cable Space	Required
Network Cable Space	Required
Grounding	Required
Environmental Protection	External enclosure required as necessary

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31. Maintenance Benefits

The drive’s diagnostic functions can simplify maintenance.

When a motor stops, technicians can use drive status and fault information to determine whether the problem is associated with the motor, drive, power supply, control system or communication network.

Typical diagnostic areas include:

• Overcurrent
• Overvoltage
• Undervoltage
• Motor overload
• Ground fault
• Drive overheating
• Communication failure
• Parameter configuration
• External interlocks

This can reduce troubleshooting time and improve maintenance efficiency.

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32. Energy-Control Advantages

A variable frequency drive can regulate motor speed according to actual process demand.

For applications such as fans and pumps, this can be particularly useful because full-speed operation is not always necessary.

When process demand decreases, the motor can operate at a lower speed.

The actual energy savings depend on the machine characteristics, load profile, operating hours and control strategy.

The drive should therefore be regarded as an important tool for improving motor-process efficiency, rather than as a guarantee of a fixed energy saving.

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33. Safety and System Integration

The PowerFlex 755 platform can be incorporated into industrial safety architectures using suitable safety configurations and option hardware.

This can be useful where the machine requires functions related to:

• Safe Torque Off
• Controlled machine stopping
• Safety interlocks
• Emergency-stop architecture
• Guarding systems

The actual safety configuration must be selected according to the machine’s risk assessment and applicable safety requirements.

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34. Communication Advantages

The embedded EtherNet/IP interface is particularly valuable in automated manufacturing environments.

A centralized control system can potentially monitor:

• Motor speed
• Output frequency
• Output current
• Drive status
• Fault status
• Alarm conditions
• Commanded speed
• Actual operating conditions

This can reduce the amount of discrete wiring required between the drive and controller.

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35. Technical Strengths

Technical Strength	Description
43 A Output	Suitable for medium-power industrial motors
22 kW ND	Strong normal-duty capacity
18.5 kW HD	Useful for demanding applications
400 V AC	Common three-phase industrial voltage class
Frame 3	Practical medium-power mechanical platform
EtherNet/IP	Integrated industrial communication
Dynamic Braking	Internal braking transistor
EMC Filter	Helps manage conducted electrical noise
Forced Air Cooling	Supports thermal performance
Modular Options	Supports expansion
Advanced Diagnostics	Helps maintenance
Variable Speed	Improves process flexibility

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36. Selection Comparison by Motor Power

Motor Requirement	Suggested Drive Class
Around 7.5 kW	Smaller PowerFlex configuration
Around 11 kW	20G11NC022JA0NNNNN class
Around 15 kW	20G11NC030JA0NNNNN class
Around 18.5 kW	20G11NC037JA0NNNNN class
Around 22 kW	20G11NC043JA0NNNNN class
Around 30 kW	20G11NC060JA0NNNNN class or larger

The motor’s actual current should always be the primary selection parameter.

Horsepower and kilowatt ratings are useful for preliminary selection, but the final drive selection should be based on the motor nameplate and application duty.

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37. 20G11NC043JA0NNNNN vs. 20G11NC037JA0NNNNN

These two models are particularly close in application range.

Parameter	20G11NC037JA0NNNNN	20G11NC043JA0NNNNN
Voltage Class	400 V	400 V
ND Current	~37 A	43 A
ND Power	18.5 kW	22 kW
HD Power	~15 kW	18.5 kW
Frame	3	3
EtherNet/IP	Yes	Yes
Dynamic Braking	Yes	Yes
EMC Filter	Yes	Yes
Cooling	Forced Air	Forced Air
Dimensions	Approx. 454 × 190 × 212 mm	454 × 190 × 212 mm
Weight (kg)	Approx. 12 kg	Approx. 12 kg

The main difference is the higher current and power capacity of the 043 configuration.

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38. 20G11NC043JA0NNNNN vs. 20G11NC030JA0NNNNN

Parameter	20G11NC030JA0NNNNN	20G11NC043JA0NNNNN
Voltage Class	400 V	400 V
ND Current	~30 A	43 A
ND Power	15 kW	22 kW
HD Power	~11 kW	18.5 kW
Frame	3	3
Communication	EtherNet/IP	EtherNet/IP
Dynamic Braking	Yes	Yes
EMC Filtering	Yes	Yes
Cooling	Forced Air	Forced Air
Weight (kg)	Approx. 10–12 kg	12 kg

The 043 configuration provides substantially more current capacity and is therefore better suited to larger motors or heavier process requirements.

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39. Product Specification Summary

Category	Detailed Specification
Model	20G11NC043JA0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	AC Variable Frequency Drive
Voltage	400 V AC
Phase	3 Phase
ND Current	43 A
ND Power	22 kW
ND Horsepower	Approx. 30 HP
HD Current	Approx. 37 A
HD Power	18.5 kW
Frame	Frame 3
Cooling	Forced Air
Enclosure	IP20/IP00
Enclosure Type	NEMA/UL Open Type
Communication	Embedded EtherNet/IP
Input	AC with Precharge
DC Terminals	Yes
EMC Filter	Yes
CM Jumper	Installed
Dynamic Braking	Internal DB Transistor
HIM	Blank / No HIM
Height	454 mm
Width	190 mm
Depth	212 mm
Weight	Approx. 12 kg
Weight (kg)	12 kg
Typical Applications	Pumps, fans, blowers, conveyors, mixers, material handling
Motor Control	V/Hz, vector-oriented and application-dependent control
Option Architecture	Modular
Installation	Electrical cabinet / protected panel

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40. Recommended Five Related Models

For applications requiring a similar product with different capacity, the following models are practical comparison points:

No.	Model	Series	Approx. ND Power	Approx. ND Current	Voltage Class	Frame	Weight (kg)
1	20G11NC022JA0NNNNN	PowerFlex 755	11 kW	22 A class	400 V	2	Approx. 8–10
2	20G11NC030JA0NNNNN	PowerFlex 755	15 kW	30 A class	400 V	3	Approx. 10–12
3	20G11NC037JA0NNNNN	PowerFlex 755	18.5 kW	37 A class	400 V	3	Approx. 12
4	20G11NC043JA0NNNNN	PowerFlex 755	22 kW	43 A	400 V	3	12
5	20G11NC060JA0NNNNN	PowerFlex 755	30 kW class	60 A class	400 V	Larger	Approx. 20+

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41. Recommended Five Same-Brand Models

No.	Model	Series	Typical Application	Voltage Class	Power Range	Cooling	Weight (kg)
1	25B-D010N104	PowerFlex 525	Pumps, fans, conveyors	480 V class	Small/medium	Air	Approx. 3–5
2	25B-D017N104	PowerFlex 525	General machinery	480 V class	Medium	Air	Approx. 4–6
3	25B-D027N114	PowerFlex 525	Pumps, fans, conveyors	480 V class	Medium	Air	Approx. 5–8
4	20F11ND077AA0NNNNN	PowerFlex 753	Industrial machinery	480 V class	Higher power	Air	Approx. 20+
5	20G11NC043JA0NNNNN	PowerFlex 755	Advanced industrial machinery	400 V class	22 kW ND	Forced Air	12

These five models cover different positions within the product range.

The PowerFlex 525 configurations are generally more compact and are well suited to smaller machines.

The PowerFlex 753 is positioned toward more demanding industrial applications.

The PowerFlex 755 is better suited to applications requiring advanced control, communication, modular options and more extensive system integration.

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42. Why the 20G11NC043JA0NNNNN Is a Strong Choice

The main advantage of the 20G11NC043JA0NNNNN is the balance between electrical capacity, physical size and advanced control functionality.

It provides:

43 A normal-duty current

22 kW normal-duty power

18.5 kW heavy-duty power

400 V three-phase operation

Frame 3 construction

Integrated EtherNet/IP

Internal dynamic-braking transistor

Integrated EMC filtering

Forced-air cooling

These features make it appropriate for many medium-sized industrial machines.

It is particularly attractive where a basic variable-speed drive is not enough and the machine requires network communication, diagnostics, controlled braking and expansion possibilities.

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43. Final Technical Assessment

The 20G11NC043JA0NNNNN is a PowerFlex 755, 400 V, three-phase, 43 A AC drive designed for industrial motor-control applications.

Its principal rating is 22 kW under normal duty and 18.5 kW under heavy duty.

The drive uses Frame 3, with approximate dimensions of 454 mm × 190 mm × 212 mm and a product weight of approximately 12 kg.

The combination of IP20/IP00 open construction, forced-air cooling, integrated EtherNet/IP, internal dynamic braking, EMC filtering and DC terminals makes it a flexible solution for industrial automation systems.

The drive is particularly suitable for conveyors, pumps, fans, blowers, mixers, material-handling systems and other medium-power process machinery.

Its integrated communication capability is one of its most useful characteristics because it allows motor operation and drive diagnostics to become part of the machine’s overall control system.

For applications involving higher inertia or rapid stopping, the internal dynamic-braking transistor provides additional flexibility.

For applications requiring more advanced control, the PowerFlex 755 platform can accommodate suitable feedback, communication, safety and other option modules.

The 454 × 190 × 212 mm physical size and approximately 12 kg product weight also make it a relatively practical Frame 3 solution for cabinet installation.

When selecting this drive for an actual machine, the most important parameters to verify are the motor nameplate current, normal-duty or heavy-duty requirement, supply voltage, overload profile, acceleration/deceleration requirements, ambient temperature, altitude, braking requirements, enclosure conditions and required communication or safety functions.

Overall, the 20G11NC043JA0NNNNN is a strong choice for a 22 kW-class industrial motor application where reliable variable-speed operation, network connectivity, controlled braking and advanced automation integration are required.