Company Information
E-mail		[email protected]
Mobile		+8615980777398
Whatsapp		+8615980777398
WeChat		15980777398

20G11JD1K0AN0NNNNN — PowerFlex 755 High-Power AC Drive

1. Product Overview

The 20G11JD1K0AN0NNNNN is a high-power AC variable frequency drive designed for large industrial motor-control applications. It belongs to the PowerFlex 755 product family and is configured as an air-cooled, Type 12 / IP54, 800 mm deep MCC-style packaged drive.

This is a large Frame 9 drive intended for applications where motor power, current capacity, industrial enclosure protection, and reliable speed and torque control are important.

The model is designed for 480 VAC, three-phase input and has a maximum Light Duty current rating of approximately 1,135 A. Its Normal Duty current rating is approximately 1,045 A, while the Heavy Duty rating is approximately 800 A. The corresponding power ratings are approximately 1,000 HP Light Duty, 900 HP Normal Duty, and 750 HP Heavy Duty.

The product uses forced-air cooling and a large MCC-style cabinet. The enclosure is rated IP54 / NEMA Type 12, making it appropriate for many controlled industrial environments where protection from dust and incidental water exposure is required.

An important characteristic of this exact catalog number is the AN configuration. It is supplied with a blank/no HIM configuration rather than the enhanced local LCD operator interface found on some other PowerFlex 755 catalog-number variants.

The model also uses an AC input with precharge and does not include an internal dynamic-braking transistor.

2. Brand and Product Series

Category	Specification
Brand	Allen-Bradley
Product family	PowerFlex
Series	PowerFlex 750 Series
Specific series	PowerFlex 755
Product type	AC Variable Frequency Drive
Product configuration	PowerFlex 755 AC Packaged Drive
Model	20G11JD1K0AN0NNNNN
Frame size	Frame 9
Cooling method	Air cooled / forced air
Enclosure	Type 12 / IP54
Cabinet style	800 mm deep MCC style
Input voltage	480 VAC
Input phase	Three phase
Main application	Large industrial AC motor control
Dynamic braking	None
HIM	Blank / No HIM
Input arrangement	AC input with precharge
Filtering configuration	EMC filter configuration
Approximate cabinet weight	1,287 kg
Approximate cabinet dimensions	2477 × 1200 × 800 mm

The Frame 9 Type 12 / IP54 cabinet is approximately 2477 mm high × 1200 mm wide × 800 mm deep, with an approximate weight of 1,287 kg. These are approximate cabinet-level figures and should be treated as installation planning values rather than transportation-certified shipping dimensions or weights.

3. Main Technical Parameters

Parameter	Specification
Model	20G11JD1K0AN0NNNNN
Product family	PowerFlex 755
Product category	AC Packaged Drive
Input voltage	480 VAC
Input frequency	50 / 60 Hz industrial supply
Input phase	3 phase
Light Duty continuous current	Approx. 1135 A
Normal Duty continuous current	Approx. 1045 A
Heavy Duty continuous current	Approx. 800 A
Light Duty power	Approx. 1000 HP
Normal Duty power	Approx. 900 HP
Heavy Duty power	Approx. 750 HP
Frame size	Frame 9
Cooling	Forced-air cooled
Enclosure	NEMA Type 12
Ingress protection	IP54
Cabinet depth	800 mm
Approx. height	2477 mm
Approx. width	1200 mm
Approx. depth	800 mm
Approx. weight	1287 kg
HIM	Blank / No HIM
Dynamic braking	None
Input type	AC input with precharge
DC bus terminals	Configuration dependent; this catalog number uses the AC-input configuration without the optional DC-terminal arrangement
Filtering	EMC filter configuration
Installation style	MCC-style cabinet
Application class	Architecture-level industrial drive
Typical motor application	Large AC motors
Typical equipment	Pumps, fans, compressors, conveyors, process machinery
Industrial networking	PowerFlex 755 platform supports industrial network integration
Construction	Large-frame packaged drive
Recommended environment	Controlled industrial installation

The current and horsepower figures are duty-dependent. The 1,135 A / 1,000 HP figure should not be interpreted as the rating available under every operating condition. For a demanding application, the Normal Duty and Heavy Duty ratings need to be checked against the motor nameplate current, overload requirements, starting torque, acceleration profile, and operating cycle.

4. Understanding the Model Number

The catalog number 20G11JD1K0AN0NNNNN contains configuration information rather than being simply a serial identification number.

The 20G portion identifies the PowerFlex 755 product architecture.

The 11 portion identifies the particular catalog configuration family.

The J identifies the enclosure arrangement associated with the large MCC-style Type 12 / IP54 configuration.

The D1K0 portion corresponds to the very high current/power class within the 480 V PowerFlex 755 range.

The AN configuration is particularly important because it identifies a configuration without the standard local HIM arrangement represented by some other catalog-number variants. The product information for this exact model describes the display as Blank / No HIM.

The final configuration characters represent additional factory configuration selections and standard options.

For purchasing and engineering purposes, the complete catalog number should always be used. It is not recommended to replace this drive merely by matching the first several characters of the catalog number.

5. Product Introduction

The 20G11JD1K0AN0NNNNN is intended for large-scale motor-control systems.

A conventional fixed-speed motor receives power at a relatively fixed supply frequency. Its speed is then primarily determined by the electrical frequency, motor characteristics, and load.

A variable frequency drive changes this relationship by controlling the electrical frequency and voltage delivered to the motor.

This allows the motor to operate at different speeds according to process requirements.

For a large industrial motor, this capability can be extremely valuable.

A pump does not necessarily need to operate at maximum speed when process demand is low.

A large fan may only need a portion of its maximum airflow.

A conveyor may require a controlled acceleration sequence instead of an abrupt start.

A compressor may need to adjust its speed according to process demand.

The drive provides the electrical and control platform needed to perform this type of variable-speed operation.

6. High-Power Capability

The most noticeable characteristic of the 20G11JD1K0AN0NNNNN is its very high current capacity.

The Normal Duty rating is approximately 1,045 A, which places the model in the large industrial drive category.

Its approximate duty ratings can be summarized as follows:

Duty Classification	Continuous Current	Approximate Power
Light Duty	1135 A	1000 HP
Normal Duty	1045 A	900 HP
Heavy Duty	800 A	750 HP

These different ratings exist because industrial motors do not all operate under the same load conditions.

A centrifugal fan, for example, can have a substantially different torque profile from a heavily loaded conveyor.

A large pump may normally operate with relatively smooth torque requirements, while a material-handling machine may have considerably higher acceleration and overload requirements.

Therefore, the Heavy Duty rating is particularly important for applications involving high starting torque, frequent acceleration, high inertia, or repeated overload conditions.

7. Enclosure and Mechanical Construction

The model uses an IP54 / NEMA Type 12, 800 mm deep MCC-style enclosure.

This is a significant difference compared with smaller open-frame variable frequency drives.

A large industrial cabinet provides a more complete equipment package and can be better suited to industrial electrical rooms, motor-control centers, and large machine installations.

The approximate physical characteristics are:

Mechanical Parameter	Approximate Value
Height	2477 mm
Width	1200 mm
Depth	800 mm
Weight	1287 kg
Enclosure	NEMA Type 12
IP rating	IP54
Cabinet type	MCC style
Frame	9

The approximate weight of 1,287 kg is substantial.

This means transportation and installation cannot be treated like the handling of a conventional wall-mounted VFD.

The equipment foundation, floor loading, lifting method, cabinet access, transportation route, and installation sequence should all be considered before the drive is delivered.

Large Frame 8–10 drives also use specialized installation arrangements, and the product documentation identifies roll-out equipment for handling large drive assemblies during installation.

8. Cooling System

The 20G11JD1K0AN0NNNNN is an air-cooled drive.

At this power level, the power semiconductor section generates significant heat.

The cooling system therefore becomes a major part of the installation design.

The electrical room must have sufficient ventilation and heat-removal capacity.

The cabinet should not be installed in a location where hot exhaust air can be continuously recirculated back into the drive.

Ambient temperature is also important.

For large industrial drives, inadequate ventilation can lead to excessive internal temperature, reduced component life, nuisance thermal protection, and unnecessary downtime.

A properly designed ventilation system is therefore just as important as selecting the correct electrical rating.

9. HIM Configuration

One of the defining characteristics of this particular catalog number is the blank / no HIM configuration.

HIM refers to the Human Interface Module.

Some PowerFlex 755 configurations include an operator interface mounted on the front of the drive or cabinet. This allows operators and maintenance personnel to view parameters, status information, faults, and operating values locally.

The 20G11JD1K0AN0NNNNN does not include the standard HIM configuration, which can be advantageous in installations where operation and diagnostics are primarily handled through a centralized automation system.

This can provide a cleaner cabinet arrangement and may reduce unnecessary local operator hardware.

On the other hand, if maintenance personnel require extensive local access, a compatible operator interface may be desirable as part of the overall system design.

Therefore, the blank-HIM configuration should be considered a deliberate configuration choice rather than a missing feature.

10. Dynamic Braking

The catalog information specifies no internal dynamic-braking transistor for this model.

This is an important consideration for applications with high-inertia loads.

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

If the application requires rapid deceleration, that regenerated energy needs to be managed correctly.

Depending on the application, braking may require an appropriate external braking arrangement or a different drive configuration.

Applications that may require particular attention include:

• Large centrifuges
• High-inertia fans
• Heavy conveyors
• Large rotating drums
• Certain hoisting applications
• High-speed machinery
• Machines requiring rapid stopping

For a normal variable-speed pump or fan application with relatively gentle deceleration, dynamic braking may not be necessary.

11. Industrial Applications

11.1 Large Pumps

Large pumps are one of the strongest application areas for this type of drive.

Pump speed can be adjusted according to flow, pressure, tank level, or another process variable.

This can reduce the need to continuously operate the motor at maximum speed.

Potential applications include:

• Water treatment
• Industrial water circulation
• Cooling-water systems
• Process-water systems
• Municipal pumping
• Irrigation
• Chemical processing
• Oil and gas auxiliary pumping
• Large process pumps

11.2 Large Fans and Blowers

Industrial fans can consume substantial power.

When airflow demand changes, variable-speed control allows the fan motor to operate closer to the actual process requirement.

Potential applications include:

• Industrial ventilation
• Furnace exhaust
• Dust collection
• Mining ventilation
• Cement plants
• Steel processing
• Chemical processing
• Large HVAC systems
• Industrial cooling systems

11.3 Heavy Conveyors

Large conveyors often require considerable motor power.

A drive can provide controlled acceleration rather than applying the entire electrical and mechanical impact immediately.

This is particularly valuable for long conveyor systems.

Controlled acceleration can help reduce stress on:

• Conveyor belts
• Gearboxes
• Couplings
• Shafts
• Bearings
• Mechanical drive components

11.4 Compressors

Large compressors can require significant motor capacity.

Variable-speed control can allow motor speed to respond to process requirements.

Potential applications include:

• Industrial air compression
• Process gas systems
• Manufacturing facilities
• Chemical plants
• Energy facilities
• Large utility systems

11.5 Process Machinery

The PowerFlex 755 architecture is also appropriate for large rotating process machinery.

Typical equipment can include:

• Mixers
• Large agitators
• Processing lines
• Extrusion equipment
• Material-processing machinery
• Large machine tools
• Industrial production equipment

12. Product Advantages

12.1 Very High Current Capacity

The 1,045 A Normal Duty rating provides substantial capacity for large industrial motors.

This makes the model suitable for applications far beyond the range of small and medium-sized variable frequency drives.

12.2 Flexible Duty Selection

The three duty categories provide flexibility.

An engineer can evaluate the motor against Light Duty, Normal Duty, and Heavy Duty requirements instead of treating horsepower as a single fixed number.

This is particularly important for large machines because the mechanical load profile can be more important than the nominal motor horsepower.

12.3 Industrial Cabinet Protection

The IP54 / NEMA Type 12 enclosure provides a substantially more industrialized package than a basic open-frame drive.

The 800 mm deep MCC-style design is intended for large electrical installations.

It also gives the system integrator a clear mechanical package for cabinet and electrical-room planning.

12.4 Air-Cooled Design

Air cooling avoids the additional infrastructure associated with liquid cooling.

For facilities with adequate HVAC and ventilation capacity, this can provide a straightforward high-power cooling arrangement.

12.5 Large-Motor Control

The model is designed specifically for the kind of high-current motor applications where conventional small drives are not practical.

Its 480 V architecture and large Frame 9 design make it appropriate for high-power industrial machinery.

12.6 Centralized Control Possibilities

The PowerFlex 755 platform supports integration into industrial automation systems.

This allows a large drive to become part of a wider process-control system rather than operating as an isolated speed controller.

13. Main Parameters at a Glance

Parameter	Value
Model	20G11JD1K0AN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Family	PowerFlex 750 Series
Voltage	480 VAC
Phase	3 phase
Light Duty current	1135 A
Normal Duty current	1045 A
Heavy Duty current	800 A
Light Duty rating	1000 HP
Normal Duty rating	900 HP
Heavy Duty rating	750 HP
Frame	9
Cooling	Air cooled
Enclosure	NEMA Type 12
Protection	IP54
Cabinet depth	800 mm
Approx. dimensions	2477 × 1200 × 800 mm
Approx. weight	1287 kg
HIM	Blank / No HIM
Dynamic braking	None
Input	AC with precharge
Cabinet style	MCC style
Typical use	Large industrial motor control

14. Five Related Models from the PowerFlex 755 Series

The following five models are useful comparison choices because they are in the same PowerFlex 755 high-power family and are close to the target model in voltage, frame, current capacity, or application range.

Model	Voltage	Frame	Normal Duty Current	Heavy Duty Current	Approx. Power Position	Enclosure	Approx. Dimensions	Approx. Weight
20G11JD800AN0NNNNN	480 VAC	9	960 A	800 A	800 HP / 600 HP class	IP54 / Type 12	2477 × 1200 × 800 mm	1287 kg
20G11JD960AN0NNNNN	480 VAC	9	1045 A	800 A	900 HP / 700 HP class	IP54 / Type 12	2477 × 1200 × 800 mm	1287 kg
20G11JD1K0AN0NNNNN	480 VAC	9	1045 A	800 A	900 HP / 750 HP class	IP54 / Type 12	2477 × 1200 × 800 mm	1287 kg
20G11JD1K2AN0NNNNN	480 VAC	9	1135 A	960 A	1000 HP / 800 HP class	IP54 / Type 12	2477 × 1200 × 800 mm	1287 kg
20G11JD1K3AN0NNNNN	480 VAC	9	1365 A	1045 A	1250 HP / 900 HP class	IP54 / Type 12	2477 × 1200 × 800 mm	1287 kg

The high-current 480 V Frame 9 models use the same general large-cabinet architecture, while their current and power ratings increase as the catalog number moves upward. The selection data lists the 480 V family through progressively larger current ratings, including 1,135 A, 1,365 A, 1,420 A, and higher configurations.

15. How the Five Related Models Differ

20G11JD800AN0NNNNN

This is the lower-capacity choice in the group.

It is useful when the motor does not require the approximately 1,045 A Normal Duty capability of the target model.

It can therefore provide a more appropriately sized solution for a somewhat smaller large motor.

20G11JD960AN0NNNNN

This model sits very close to the target model in the high-power range.

It can be useful when the required motor current falls near the upper end of the 960 A class.

For a new project, the motor’s actual nameplate current should be compared directly against the Normal Duty and Heavy Duty ratings.

20G11JD1K0AN0NNNNN

This is the target model.

It provides approximately 1,045 A Normal Duty capability and approximately 800 A Heavy Duty capability at 480 V.

It is therefore appropriate for very large industrial motors and demanding process applications.

20G11JD1K2AN0NNNNN

This is a step upward in current capacity.

It becomes attractive when the target model is approaching its current limit.

For applications with larger motors or greater continuous current requirements, moving to the higher-current model can provide a better engineering margin.

20G11JD1K3AN0NNNNN

This model moves further into the very-high-current range.

It is appropriate for extremely large motor systems where the 1,045 A class is insufficient.

It should not be selected simply because it has a higher current rating. Oversizing a drive can increase equipment cost and may affect system design, protection, and physical installation requirements.

16. Five Popular Models from the Same Brand

For a broader product comparison, the following models represent useful options across different power levels and drive architectures.

Model	Product Series	Voltage Class	Current / Power Class	Frame	Typical Application	Approx. Dimensions	Approx. Weight
20G11JD1K0AN0NNNNN	PowerFlex 755	480 VAC	1135 A LD / 1045 A ND / 800 A HD	9	Large pumps, fans, conveyors	2477 × 1200 × 800 mm	1287 kg
20G11JD800AN0NNNNN	PowerFlex 755	480 VAC	960 A class	9	Large industrial motors	2477 × 1200 × 800 mm	1287 kg
20G11JD1K2AN0NNNNN	PowerFlex 755	480 VAC	1365 A class	9	Very large process equipment	2477 × 1200 × 800 mm	1287 kg
20G11JC1K0AN0NNNNN	PowerFlex 755	380–400 VAC	Approx. 1040 A class	9	Large 400 V industrial motors	Large MCC cabinet	Approx. 1287 kg
20G11JF1K0AN0NNNNN	PowerFlex 755	690 VAC	Approx. 1040 A class	9	High-power 690 V systems	Large MCC cabinet	Approx. 1287 kg

The 400 V and 690 V versions should not be treated as electrical drop-in replacements for the 480 V model. Motor voltage, transformer configuration, incoming power, insulation requirements, protection equipment, and motor nameplate data must all be checked before selecting a different voltage class. The PowerFlex 755 family covers a wide range of voltage and power combinations.

17. Application Selection Guide

Application	Suitability	Main Reason
Large centrifugal pump	Excellent	Variable flow and pressure control
Large cooling-water pump	Excellent	Smooth speed regulation
Industrial fan	Excellent	Variable airflow control
Large blower	Excellent	Process airflow adjustment
Heavy conveyor	Very good	Controlled acceleration and speed
Large compressor	Very good	Adjustable motor speed
Process mixer	Very good	Speed and torque control
High-inertia machine	Possible	Braking and deceleration need evaluation
Hoisting equipment	Application-specific	Braking and safety requirements need detailed engineering
Rapid-stop machinery	Application-specific	Regenerative energy and braking need evaluation
Small motor	Not recommended	Drive is substantially oversized
Simple low-power machine	Not recommended	Large cabinet and capacity are unnecessary

18. Advantages for Large Industrial Plants

For a large manufacturing facility, the main advantage of this model is its ability to combine very high motor power with a structured industrial drive architecture.

A large production line may contain many motors of different sizes.

The 20G11JD1K0AN0NNNNN is intended for one of the largest motor positions in that architecture.

It can be used for the main pump, primary fan, large conveyor, process compressor, or another high-power rotating machine.

This makes it particularly valuable where the motor must not simply run at full speed continuously.

Variable-speed control can allow the process to respond to actual demand.

That can improve process control and, in suitable variable-torque applications, can also reduce unnecessary energy consumption.

The drive can also provide a more controlled acceleration and deceleration profile than a simple across-the-line starter.

For large mechanical systems, this can help reduce shock loading on the driven equipment.

19. Maintenance Considerations

Large air-cooled drives require regular attention to the cooling path.

Dust accumulation around cooling components can restrict airflow and increase thermal stress.

Fans and air passages should therefore be inspected as part of the maintenance program.

The electrical connections should also be inspected according to the applicable maintenance procedures.

Because this model weighs approximately 1,287 kg, maintenance planning is significantly different from that of a small cabinet-mounted drive.

Removing major drive assemblies may require specialized handling equipment and a planned maintenance procedure.

The installation area should therefore provide sufficient access for maintenance and equipment replacement.

A good installation should consider not only how the drive will be installed, but also how it will eventually be serviced or replaced.

20. Important Selection Points

Before using the 20G11JD1K0AN0NNNNN in a project, the following parameters should be checked carefully:

Selection Item	What Should Be Checked
Motor voltage	Must be compatible with the 480 V drive system
Motor current	Compare directly with the applicable duty rating
Motor power	Check against LD / ND / HD rating
Duty cycle	Determine whether LD, ND, or HD applies
Starting torque	Verify drive and motor capability
Acceleration time	Check against machine inertia
Deceleration time	Determine whether regenerative energy must be handled
Braking	External braking arrangement may be required
Ambient temperature	Verify operating conditions
Cooling	Confirm sufficient ventilation
Enclosure	Confirm IP54 / NEMA Type 12 is appropriate
Cabinet space	Allow sufficient clearance and service access
Weight	Plan for approximately 1287 kg equipment weight
Dimensions	Plan around approximately 2477 × 1200 × 800 mm
HIM requirement	This catalog number is blank/no HIM
Communication	Confirm required industrial-network architecture
Motor insulation	Verify suitability for VFD operation
Cable length	Evaluate motor-cable effects
Grounding	Confirm correct industrial grounding arrangement
Protection	Coordinate upstream protection and system SCCR requirements

21. Comparison: Target Model vs. Larger Model

Feature	20G11JD1K0AN0NNNNN	20G11JD1K2AN0NNNNN
Voltage	480 VAC	480 VAC
Frame	9	9
Light Duty current	1135 A	1365 A
Normal Duty current	1045 A	1135 A
Heavy Duty current	800 A	960 A
Light Duty power	Approx. 1000 HP	Approx. 1100 HP
Normal Duty power	Approx. 900 HP	Approx. 1000 HP
Heavy Duty power	Approx. 750 HP	Approx. 800 HP
Enclosure	IP54 / Type 12	IP54 / Type 12
Cabinet depth	800 mm	800 mm
Approx. dimensions	2477 × 1200 × 800 mm	2477 × 1200 × 800 mm
Approx. weight	1287 kg	1287 kg
HIM configuration	Blank / No HIM	Configuration dependent
Dynamic braking	None	None
Best suited for	Large motor applications	Even higher-current large motor applications

The important difference is the electrical capacity rather than the general cabinet architecture.

22. Overall Product Assessment

The 20G11JD1K0AN0NNNNN is a very large industrial AC drive intended for high-power motor applications.

Its strongest characteristics are its 480 VAC three-phase architecture, approximately 1,045 A Normal Duty current rating, approximately 800 A Heavy Duty current rating, Frame 9 construction, air cooling, IP54 / NEMA Type 12 enclosure, and 800 mm deep MCC-style cabinet.

The model is especially suitable for large pumps, fans, blowers, conveyors, compressors, and process machinery.

The approximately 1,000 HP Light Duty / 900 HP Normal Duty / 750 HP Heavy Duty capacity makes it a serious high-power industrial solution rather than a general-purpose machine drive.

Its blank-HIM configuration makes it particularly suitable for systems where the drive is managed through a centralized control system rather than by a local operator panel.

The absence of an internal dynamic-braking transistor is an important consideration for high-inertia machines and rapid-deceleration applications.

The physical size is also significant. With an approximate 2477 × 1200 × 800 mm cabinet and approximately 1287 kg weight, this is equipment that requires proper mechanical, electrical, ventilation, transportation, and maintenance planning.

For a large industrial project, the most important selection rule is to choose the drive according to the actual motor current and duty profile, not simply the motor horsepower.

If the motor operates continuously near 1,000 HP and the application has relatively moderate overload requirements, this model can be a strong match.

If the motor has severe starting requirements, frequent overloads, high inertia, or rapid stopping requirements, the Heavy Duty rating and braking arrangement should be evaluated carefully.

If the motor current is significantly below the drive rating, a smaller PowerFlex 755 configuration may provide a more economical solution.

If the motor current approaches or exceeds the applicable 1,045 A Normal Duty rating, moving to a larger-current Frame 9 configuration such as the 20G11JD1K2AN0NNNNN may be more appropriate.

In practical terms, the 20G11JD1K0AN0NNNNN is best viewed as a high-capacity, cabinetized industrial motor-control solution for very large 480 V AC motors, particularly where process control, variable speed, controlled acceleration, and integration into an industrial automation system are required.