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Allen-Bradley 20G11BC1K4JN0NNNNN — Detailed Product Specifications, Introduction, Applications, Advantages, Series Information and Recommended Models

1. Product Overview

The 20G11BC1K4JN0NNNNN is a high-power Allen-Bradley PowerFlex 755 AC Drive designed for large industrial motor-control applications.

It is part of the PowerFlex 755 series and belongs to the high-power, air-cooled packaged-drive configuration. This model is intended for large three-phase AC motors where conventional compact variable-frequency drives are not sufficient in terms of current capacity, power rating, thermal management, or industrial integration.

The model is an active configuration and is specified for a 400 V AC class, with a nominal output-current rating of approximately 1,465 A, 800 kW Normal Duty, 850 kW Light Duty, and 630 kW Heavy Duty. It uses a Frame 9 construction with a 600 mm deep MCC-style configuration.

The drive is air cooled and incorporates an EMC-filtered input arrangement, common-mode capacitor jumper configuration, and AC input with precharge. The catalog configuration does not include an internal dynamic-braking transistor.

One particularly important characteristic of the JN0 configuration is that it is supplied as a blank configuration with no HIM, meaning the drive does not use a local Human Interface Module as part of this particular catalog configuration.

2. Brand, Series and Product Classification

Item	Specification
Model	20G11BC1K4JN0NNNNN
Brand	Allen-Bradley
Product family	PowerFlex
Series	PowerFlex 755
Product type	High-Power AC Variable Frequency Drive
Product configuration	PowerFlex 755 AC Packaged Drive
Cooling	Air cooled
Frame	Frame 9
Voltage class	400 V AC
Input phase	Three phase
Output current	Approximately 1,465 A
Light Duty rating	850 kW
Normal Duty rating	800 kW
Heavy Duty rating	630 kW
Enclosure class	IP20 / NEMA Type 1 class
Cabinet arrangement	600 mm Deep MCC Style
Input	AC input with precharge
Filtering	EMC filtered
CM capacitor configuration	Jumper installed
Dynamic braking	None
Local HIM	Blank / No HIM
Communication	Embedded EtherNet/IP
Product status	Active

3. Basic Technical Parameters

Parameter	Specification
Model	20G11BC1K4JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product family	PowerFlex 750-Series
Product category	AC Drive
Voltage	400 V AC class
Supply range	Approximately 380–480 V AC class
Input phase	3 phase
Output phase	3 phase
Nominal output current	Approximately 1,465 A
Light Duty power	850 kW
Normal Duty power	800 kW
Heavy Duty power	630 kW
Frame size	Frame 9
Cooling	Air cooled
Enclosure	IP20 / NEMA/UL Type 1 class
Cabinet style	600 mm Deep MCC Style
Input configuration	AC input with precharge
EMC filter	Included
CM jumper	Installed
Dynamic braking transistor	Not included
Local HIM	None / blank configuration
Communication	Embedded EtherNet/IP
DC bus	Approximately 540 V DC class
Depth	600 mm class
Height	Configuration dependent; verify mechanical drawing
Width	Configuration dependent; verify mechanical drawing
Approximate weight	1,270 kg
Approximate mass	Approximately 1.27 metric tons
Installation environment	Industrial electrical room / MCC
Lifecycle status	Active

4. Electrical Rating

The most important electrical characteristic of the 20G11BC1K4JN0NNNNN is its extremely high current capacity.

The catalog configuration is rated at approximately 1,465 A, placing it firmly in the high-power industrial-drive category. The associated PowerFlex 755 configuration provides 850 kW Light Duty, 800 kW Normal Duty, and 630 kW Heavy Duty ratings.

Duty Classification	Power Rating
Light Duty	850 kW
Normal Duty	800 kW
Heavy Duty	630 kW
Output current	Approximately 1,465 A
Voltage	400 V AC class
Input	3 phase

These different ratings are important because the same drive can support different motor sizes depending on the actual load profile.

A pump with a relatively smooth torque characteristic may be suitable for a higher power rating than a conveyor that requires significant starting torque and overload capability.

5. Product Introduction

The 20G11BC1K4JN0NNNNN is designed for large industrial installations where motor speed must be controlled electronically rather than simply switching the motor between on and off states.

It converts the incoming three-phase AC supply into a controlled electrical output for the motor.

The drive controls motor speed and torque by regulating the output waveform supplied to the motor.

A simplified operating structure is:

Three-Phase AC Power

↓

Input Protection / Precharge

↓

AC-to-DC Conversion

↓

DC Link

↓

Inverter Section

↓

Variable-Frequency AC Output

↓

Large Industrial Motor

↓

Pump / Fan / Conveyor / Process Machine

6. Why This Model Is Considered a High-Power Drive

A drive with a current capacity of approximately 1,465 A is considerably different from a small machine-mounted inverter.

The equipment requires substantial electrical infrastructure, mechanical support, cooling, cable management and maintenance planning.

It is normally installed as part of a centralized electrical system rather than mounted directly on a small machine.

Typical installation environments include:

• Large manufacturing plants.
• Water-treatment facilities.
• Mining operations.
• Cement plants.
• Process industries.
• Large pumping stations.
• Industrial ventilation systems.
• Material-handling facilities.
• Central electrical rooms.

7. PowerFlex 755 Series

The PowerFlex 755 series is a high-performance industrial drive platform intended for applications ranging from conventional variable-speed control to more demanding motor-control systems.

The platform is designed to integrate with industrial automation systems and can be used in applications involving pumps, fans, conveyors and other large rotating equipment.

For large installations, the major advantage is that the drive can become part of the plant automation architecture rather than functioning as an isolated motor controller.

This makes it possible to coordinate the drive with PLCs, HMIs, supervisory systems, process controllers and industrial Ethernet networks.

8. Embedded EtherNet/IP

The 20G11BC1K4JN0NNNNN configuration includes embedded EtherNet/IP capability.

This is particularly useful for plants that use Ethernet-based automation.

A typical architecture could look like:

PLC

↓

Industrial Ethernet Network

↓

PowerFlex 755

↓

20G11BC1K4JN0NNNNN

↓

Large AC Motor

↓

Process Equipment

This arrangement allows important drive information to be incorporated into the plant control system.

9. JN0 Configuration

The catalog number contains the JN0 option sequence.

For this particular configuration, the product listing identifies the model as blank with no HIM.

This is important when comparing it with other PowerFlex 755 configurations.

A customer should not assume that every PowerFlex 755 with the same power rating has the same operator interface.

The complete catalog number must be checked before purchasing a replacement.

10. No Internal Dynamic-Braking Transistor

The 20G11BC1K4JN0NNNNN is specified without an internal dynamic-braking transistor.

This is an important selection consideration for high-inertia machinery.

For applications where the motor must decelerate very quickly, the engineering team should evaluate where the regenerated energy will go.

Depending on the application, a braking system or another regenerative-energy solution may be required.

11. EMC Filtering

The drive is configured with filtering and a common-mode capacitor jumper installed.

EMC performance is especially important in large industrial plants because high-power drives can operate alongside:

• PLCs.
• Ethernet networks.
• Instrumentation.
• Sensors.
• Process controllers.
• Measurement equipment.
• Other variable-frequency drives.

Correct grounding, bonding, cable routing and motor-cable practices should therefore be considered together with the drive’s internal filtering.

12. AC Input With Precharge

The catalog configuration uses an AC input with precharge.

Precharge is particularly important in a high-power drive because the DC-link capacitors represent a substantial electrical load during energization.

A controlled charging process reduces the electrical stress associated with initially energizing the DC bus.

This becomes increasingly important as drive power and DC-link capacitance increase.

13. Frame 9 Construction

The 20G11BC1K4JN0NNNNN is a Frame 9 drive.

Frame 9 is used for large-power configurations and provides the physical space required for high-current electrical components, power-conversion components, cooling equipment and associated connections.

The large frame also explains why the equipment should be considered a major electrical installation rather than a simple cabinet-mounted VFD.

14. Dimensions

The catalog information identifies the configuration as a 600 mm deep MCC-style drive.

For engineering purposes, the dimensional information can be summarized as follows:

Mechanical Parameter	Specification
Model	20G11BC1K4JN0NNNNN
Frame	Frame 9
Cabinet style	MCC style
Depth	600 mm
Height	Configuration dependent
Width	Configuration dependent
Cooling	Air cooled
Enclosure	IP20 / NEMA Type 1 class
Installation	Industrial cabinet / MCC environment

The exact height and width should be taken from the mechanical drawing associated with the final configuration.

For a large Frame 9 installation, it is better engineering practice to use the actual dimension drawing rather than estimating dimensions from the frame number.

15. Weight

The listed weight for this model is approximately 2,800 lb, which corresponds to approximately 1,270 kg.

Weight Parameter	Value
Model	20G11BC1K4JN0NNNNN
Approximate weight	1,270 kg
Approximate weight in tons	1.27 metric tons
Approximate imperial weight	~2,800 lb
Equipment class	Heavy industrial electrical equipment

The approximately 1.27-ton mass should be considered when planning transportation, lifting, floor loading and final positioning.

Actual shipping mass can vary depending on the complete packaged arrangement and accessories.

16. Cooling System

The drive is air cooled.

Large air-cooled drives are practical for industrial electrical rooms, but the room itself must be designed to remove the heat generated during operation.

Important considerations include:

• Airflow.
• Room temperature.
• Cooling-fan condition.
• Dust.
• Air filtration.
• Cabinet ventilation.
• Heat extraction.
• Service access.

The drive should not be installed in an area where hot exhaust air can recirculate back into the cooling intake.

17. Enclosure and Protection

The configuration is identified as an IP20 / NEMA Type 1 class arrangement.

This type of protection is appropriate for a properly controlled electrical-room environment.

It should not be interpreted as a weatherproof enclosure.

For outdoor, washdown, dusty or corrosive environments, an appropriate system-level enclosure and environmental protection strategy is required.

18. Typical Applications

Application	Suitability
Large centrifugal pumps	Excellent
Water-treatment pumps	Excellent
Wastewater systems	Excellent
Cooling-water pumps	Excellent
Large fans	Excellent
Industrial blowers	Excellent
Large conveyors	Very good
Mining equipment	Very good
Cement equipment	Very good
Material handling	Very good
Industrial ventilation	Excellent
Process machinery	Very good
High-inertia machinery	Requires braking evaluation
Regenerative loads	Requires engineering evaluation
Small machines	Not appropriate; substantially oversized

19. Application — Large Pump Systems

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

Typical applications include:

• Raw-water pumping.
• High-lift pumping.
• Cooling-water circulation.
• Industrial process pumping.
• Wastewater pumping.
• Chemical-process circulation.
• Large irrigation systems.

Variable-speed operation allows pump output to be adjusted according to process demand.

20. Application — Water and Wastewater Treatment

Water-treatment facilities often use large motors continuously.

The drive can be used for:

• Raw-water pumps.
• Transfer pumps.
• Distribution pumps.
• Aeration blowers.
• Process circulation pumps.
• Sludge-processing equipment.

Variable speed can help the process follow changing flow requirements.

This can also reduce the need to regulate flow entirely through mechanical throttling.

21. Application — Cooling Systems

Large industrial cooling systems can require hundreds of kilowatts of motor power.

Potential applications include:

• Cooling-water pumps.
• Cooling towers.
• Large circulation pumps.
• Industrial fans.
• Heat-exchanger systems.

The drive can adjust motor speed according to the actual cooling requirement.

22. Application — Large Fans and Blowers

Large fans and blowers are particularly interesting applications because their required speed can change substantially depending on process conditions.

Typical applications include:

• Industrial ventilation.
• Furnace exhaust.
• Dust extraction.
• Mine ventilation.
• Tunnel ventilation.
• Process exhaust.
• Combustion air.
• Wastewater aeration.

The ability to control speed electrically provides a more flexible method of adjusting airflow.

23. Application — Mining

Mining facilities often use very large motors.

The model can be considered for:

• Long conveyors.
• Dewatering pumps.
• Large ventilation fans.
• Material handling.
• Processing equipment.
• Crushing-related auxiliary equipment.
• Mineral-processing systems.

Mining installations should receive additional attention regarding dust, vibration, ambient temperature, cable routing and maintenance access.

24. Application — Cement Plants

Cement and aggregate plants contain many high-power rotating machines.

Typical candidates include:

• Large process fans.
• Exhaust fans.
• Conveyors.
• Blowers.
• Large pumps.
• Dust-collection systems.
• Material-handling equipment.

A high-power PowerFlex 755 drive can provide centralized speed control for these systems.

25. Application — Conveyor Systems

Large conveyors can have significant inertia.

A controlled acceleration profile can reduce mechanical shock to:

• Conveyor belts.
• Gearboxes.
• Couplings.
• Shafts.
• Bearings.
• Mechanical drives.

The exact acceleration requirements should be evaluated according to the conveyor’s mass, slope, belt tension and starting torque.

26. Application — Industrial Ventilation

Industrial ventilation systems rarely need to operate at exactly the same speed under all conditions.

Variable-speed control allows the fan to respond to:

• Production load.
• Temperature.
• Pressure.
• Airflow requirements.
• Process demand.

This can make the system more flexible than fixed-speed operation.

27. Application — Process Equipment

The drive can also be used in large process systems where motor speed is an important process variable.

Examples include:

• Circulation systems.
• Large mixers.
• Blowers.
• Process fans.
• Pumps.
• Material-handling equipment.

The exact suitability depends on the torque-speed characteristics of the machine.

28. Major Product Advantages

Advantage	Description
High current capacity	Approximately 1,465 A
High Normal Duty rating	800 kW
High Light Duty rating	850 kW
Heavy Duty rating	630 kW
Frame 9 architecture	Designed for very large motors
Air cooling	Practical for engineered industrial rooms
Embedded EtherNet/IP	Supports networked automation
EMC filtering	Helps manage electrical noise
AC precharge	Suitable for large DC-link systems
600 mm MCC-style depth	Useful for centralized electrical installations
PowerFlex 755 platform	Broad industrial application range
No HIM configuration	Suitable for centralized-control installations
Large motor capability	Suitable for high-power process equipment

29. Advantage — Very High Current Capability

The approximately 1,465 A current rating is the most significant feature of the product.

This allows it to control motors that are far beyond the range of compact variable-frequency drives.

It is therefore especially useful for large plant equipment where motor current is the primary sizing consideration.

30. Advantage — 800 kW Normal Duty

The 800 kW Normal Duty rating provides a large operating envelope.

For applications with relatively stable loads, the drive can support very large motors without moving to a larger drive class.

This is particularly useful for:

• Pumps.
• Fans.
• Blowers.
• Cooling equipment.
• Process circulation systems.

31. Advantage — 850 kW Light Duty

The 850 kW Light Duty rating allows the drive to be applied to an even higher motor-power class when the actual load does not require the more demanding overload characteristics of Heavy Duty operation.

This makes the model particularly attractive for variable-torque applications.

32. Advantage — 630 kW Heavy Duty

The 630 kW Heavy Duty rating provides a useful reference for higher-torque applications.

Heavy Duty selection may be appropriate where the equipment requires greater overload capability.

Examples can include:

• Certain conveyors.
• High-inertia machinery.
• Material-handling systems.
• Difficult starting conditions.

Final selection should always be based on actual motor current and load characteristics.

33. Advantage — Embedded Network Integration

Embedded EtherNet/IP allows the drive to fit naturally into a modern industrial control architecture.

Instead of controlling the drive only through local wiring, a PLC can exchange information with the drive over the plant network.

Potentially useful information includes:

• Speed reference.
• Motor speed.
• Current.
• Drive status.
• Fault status.
• Alarm information.
• Command status.

34. Advantage — Centralized Control

The JN0 configuration is particularly interesting for centralized-control systems because it is specified without a local HIM.

In a large industrial plant, operators may already control equipment from:

• A central control room.
• A PLC system.
• An HMI.
• A SCADA system.
• An industrial Ethernet network.

In such installations, a local operator panel may not be essential.

35. Advantage — Air Cooling

Air cooling avoids the need for a dedicated liquid-cooling circuit.

This can simplify the overall system.

However, the electrical room must have sufficient ventilation capacity to remove the drive’s heat.

36. Advantage — EMC Filter

The integrated filtering configuration is useful when the drive is installed alongside sensitive industrial electronics.

This is particularly relevant in plants with:

• Instrumentation.
• Ethernet networks.
• PLC systems.
• Sensors.
• Measurement systems.
• Multiple variable-frequency drives.

37. Advantage — Standardized PowerFlex Platform

A plant operating multiple PowerFlex drives can standardize:

• Maintenance procedures.
• Parameter management.
• Troubleshooting methods.
• Spare-parts strategy.
• Operator training.
• Network architecture.

This can become a major advantage in large facilities with many variable-speed motors.

38. Electrical Installation Considerations

Because this is a very high-power drive, electrical installation should be carefully engineered.

Important considerations include:

• Incoming transformer capacity.
• Short-circuit current.
• Protection coordination.
• Cable sizing.
• Grounding.
• Motor-cable arrangement.
• EMC.
• Input protection.
• Isolation.
• Maintenance access.
• Thermal management.

39. Mechanical Installation Considerations

The approximately 1,270 kg weight means that mechanical installation should be planned before delivery.

The project should verify:

• Floor loading.
• Cabinet support.
• Transportation route.
• Door clearance.
• Elevator capacity.
• Forklift capacity.
• Crane capacity.
• Lifting points.
• Final cabinet position.

40. Electrical Room Design

The room should provide enough space for:

• Cable installation.
• Airflow.
• Maintenance.
• Electrical isolation.
• Inspection.
• Heat removal.
• Safe working clearance.

The 600 mm depth should be incorporated into the initial cabinet layout.

41. Heat Management

A drive of this power level produces considerable heat.

The electrical room should therefore be designed around actual heat-generation calculations.

Potential problems caused by inadequate cooling include:

• Higher component temperature.
• Reduced component life.
• Cooling-fan stress.
• Unexpected thermal trips.
• Increased maintenance requirements.
• Reduced reliability.

42. Maintenance Requirements

A practical maintenance program should include regular inspection of:

Maintenance Item	Recommended Action
Cooling fans	Check operation
Air passages	Keep clean
Cabinet	Inspect for dust
Power connections	Check for abnormal heating
Grounding	Verify condition
Control wiring	Inspect connections
Network wiring	Check condition
Fault history	Review regularly
Motor cable	Inspect insulation and terminations
Parameters	Maintain a current backup
Ambient temperature	Monitor
Vibration	Investigate unusual changes

43. Motor Selection

The drive should be selected according to the actual motor nameplate.

Important motor data includes:

Motor Parameter	Importance
Motor voltage	Must match the drive voltage class
Motor current	Critical sizing parameter
Motor kW	General sizing reference
Motor frequency	Required operating frequency
Motor speed	Determines operating range
Motor torque	Important for load matching
Starting torque	Important for high-load applications
Overload requirement	Determines duty selection
Acceleration time	Affects current demand
Deceleration time	Affects braking requirements
Duty cycle	Affects thermal loading
Cable length	Affects installation and EMC
Motor insulation	Important for inverter duty

44. Why Motor Current Is More Important Than Motor kW

Motor power alone should not be used to select a high-power drive.

The actual current depends on:

• Motor voltage.
• Motor efficiency.
• Power factor.
• Motor construction.
• Operating conditions.
• Duty cycle.
• Load characteristics.

For final engineering selection, the motor nameplate current should be compared with the appropriate drive current rating.

45. Braking Considerations

Because this model does not include an internal dynamic-braking transistor, braking requirements should be evaluated carefully.

A pump with a slow natural deceleration may not need aggressive braking.

A large conveyor, fan or other high-inertia machine that must stop quickly may require a different solution.

Important questions include:

• How much inertia does the load have?
• How quickly must the motor stop?
• Is regenerative energy generated?
• How often does the machine stop?
• Is controlled deceleration required?
• Is a braking resistor or regenerative system needed?

46. Application Matching Guide

Application	Suitability	Main Consideration
Large centrifugal pump	Excellent	Variable flow
Cooling-water pump	Excellent	Pressure / flow control
Wastewater pump	Excellent	Variable demand
Large fan	Excellent	Variable airflow
Large blower	Excellent	Process airflow
Conveyor	Very good	Starting torque and inertia
Mining system	Very good	Environment and mechanical load
Cement plant	Very good	Dust and process duty
Industrial ventilation	Excellent	Airflow regulation
High-inertia machine	Good	Braking analysis
Rapid-stop machine	Application dependent	External braking/regeneration
Small motor	Poor	Drive is oversized

47. Recommended Same-Series Models

The following models are useful for comparison within the PowerFlex 755 high-power family.

Model	Voltage	Current	Light Duty	Normal Duty	Heavy Duty	Frame	Depth	Approx. Weight
20G11BC1K2JN0NNNNN	400 V	1,175 A	~710 kW class	710 kW	560 kW	9	600 mm	~1,250 kg class
20G11BC1K4JN0NNNNN	400 V	1,465 A	850 kW	800 kW	630 kW	9	600 mm	~1,270 kg
20G11BC1K4JN2NNNNN	400 V	1,465 A	850 kW class	800 kW	630 kW	9	600 mm	~1,270 kg
20G11BC1K4JN4NNNNN	400 V	1,465 A	850 kW class	800 kW	630 kW	9	600 mm	~1,270 kg
20G11BC1K5JN2NNNNN	400 V	~1,480 A	~900 kW class	~850 kW class	~710 kW class	9	600 mm class	Configuration dependent

The 20G11BC1K4JN4NNNNN is especially close electrically because it shares the same basic 1K4 high-power rating while using a different HIM-related configuration. The official listing confirms the same 400 V, 1,465 A, 800 kW ND, 630 kW HD and 600 mm depth class.

48. Recommended Model 1 — 20G11BC1K2JN0NNNNN

The 20G11BC1K2JN0NNNNN is a lower-current alternative within the same PowerFlex 755 family.

Parameter	Specification
Model	20G11BC1K2JN0NNNNN
Series	PowerFlex 755
Voltage	400 V AC class
Output current	1,175 A
Normal Duty	710 kW class
Heavy Duty	560 kW class
Frame	Frame 9
Cooling	Air cooled
Enclosure	IP20 / Type 1 class
Cabinet depth	600 mm class
EMC filtering	Yes
Dynamic braking	None
HIM	JN0 blank configuration
Depth	600 mm class
Height	Configuration dependent
Width	Configuration dependent
Weight (kg)	Approximately 1,250 kg class

This is a sensible choice when the motor current is below the 1,465 A requirement of the target model.

49. Recommended Model 2 — 20G11BC1K4JN2NNNNN

The 20G11BC1K4JN2NNNNN is another 1K4 configuration.

Parameter	Specification
Model	20G11BC1K4JN2NNNNN
Series	PowerFlex 755
Voltage	400 V AC class
Output current	1,465 A
Normal Duty	800 kW
Heavy Duty	630 kW
Frame	Frame 9
Cooling	Air cooled
Enclosure	IP20 / Type 1 class
Cabinet depth	600 mm class
EMC filtering	Yes
Dynamic braking	None
HIM configuration	JN2
Depth	600 mm class
Height	Configuration dependent
Width	Configuration dependent
Weight (kg)	Approximately 1,270 kg class

This model is useful when the application requires the same basic power capacity but a different operator-interface configuration.

50. Recommended Model 3 — 20G11BC1K4JN4NNNNN

The 20G11BC1K4JN4NNNNN is another close alternative.

Parameter	Specification
Model	20G11BC1K4JN4NNNNN
Series	PowerFlex 755
Voltage	400 V AC
Output current	1,465 A
Normal Duty	800 kW
Heavy Duty	630 kW
Light Duty	Approximately 850 kW class
Frame	Frame 9
Cooling	Air cooled
Enclosure	IP20 / Type 1 class
Cabinet	600 mm Deep MCC Style
Input	AC input with precharge
Dynamic braking	None
Depth	600 mm
Height	Configuration dependent
Width	Configuration dependent
Weight (kg)	Approximately 1,270 kg class

The official specifications identify this related configuration at 400 V AC, 1,465 A, 800 kW ND, 630 kW HD and 600 mm depth.

51. Recommended Model 4 — 20G11BC1K5JN2NNNNN

The 20G11BC1K5JN2NNNNN is a higher-capacity related PowerFlex 755 configuration.

Parameter	Specification
Model	20G11BC1K5JN2NNNNN
Series	PowerFlex 755
Voltage	400 V AC class
Output current	Approximately 1,480 A class
Normal Duty	Approximately 850 kW class
Heavy Duty	Approximately 710 kW class
Frame	Frame 9
Cooling	Air cooled
Enclosure	IP20 / Type 1 class
Cabinet	MCC-style
EMC filtering	Yes
Dynamic braking	None
Depth	600 mm class
Height	Configuration dependent
Width	Configuration dependent
Weight (kg)	Configuration dependent

This model can be considered when the motor current or required duty rating is above the target 1K4 configuration.

52. Recommended Model 5 — 20G11BC1K4AN0NNNNN

The 20G11BC1K4AN0NNNNN is the older configuration corresponding closely to the target model.

Parameter	Specification
Model	20G11BC1K4AN0NNNNN
Series	PowerFlex 755
Voltage	400 V AC class
Output current	Approximately 1,465 A
Light Duty	850 kW
Normal Duty	800 kW
Heavy Duty	630 kW
Frame	Frame 9
Cooling	Air cooled
Enclosure	IP20 / Type 1 class
Cabinet depth	600 mm class
EMC filter	Yes
Dynamic braking	None
HIM	Blank / No HIM configuration
Depth	600 mm class
Height	Configuration dependent
Width	Configuration dependent
Weight (kg)	Approximately 1,270 kg class
Status	Discontinued
Replacement	20G11BC1K4JN0NNNNN

The older AN0 version was discontinued on June 30, 2024, with the 20G11BC1K4JN0NNNNN identified as its direct replacement.

53. Direct Replacement Relationship

The relationship between the older AN0 model and the current JN0 model is especially important.

Item	Previous Configuration	Current Configuration
Model	20G11BC1K4AN0NNNNN	20G11BC1K4JN0NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	400 V class	400 V class
Current	~1,465 A	~1,465 A
Normal Duty	800 kW	800 kW
Heavy Duty	630 kW	630 kW
Light Duty	850 kW	850 kW
Frame	9	9
Depth	600 mm class	600 mm class
Cooling	Air cooled	Air cooled
Dynamic braking	None	None
Lifecycle	Discontinued	Active
Replacement	—	Direct replacement

This makes the JN0 configuration particularly relevant for modernization projects involving existing AN0 installations.

54. Five Same-Brand Popular / Recommended Models

For a broader product comparison, the following models represent useful options across the same Allen-Bradley drive portfolio.

Model	Series	Voltage Class	Current / Power	Frame	Dimensions	Weight
20G11BC1K4JN0NNNNN	PowerFlex 755	400 V	1,465 A / 800 kW ND	9	600 mm deep	~1,270 kg
20G11BC1K4JN2NNNNN	PowerFlex 755	400 V	1,465 A / 800 kW ND	9	600 mm deep	~1,270 kg class
20G11BC1K4JN4NNNNN	PowerFlex 755	400 V	1,465 A / 800 kW ND	9	600 mm deep	~1,270 kg class
20F1ANC456JA0NNNNN	PowerFlex 753	400 V class	456 A / 250 kW class	7	Frame 7 configuration	Configuration dependent
25B-D030N114	PowerFlex 525	380–480 V	30 A / 15 kW class	D	Compact frame	~18 kg class

The first three are the closest alternatives because they remain within the PowerFlex 755 high-power family.

The PowerFlex 753 and PowerFlex 525 examples are much smaller and are better suited to lower-power industrial machinery.

55. PowerFlex 753 Alternative

The 20F1ANC456JA0NNNNN belongs to the PowerFlex 753 family.

It is a considerably smaller drive than the target 20G11BC1K4 configuration, but it can be useful when the application does not require the enormous current capacity of the Frame 9 PowerFlex 755.

Parameter	Specification
Model	20F1ANC456JA0NNNNN
Series	PowerFlex 753
Voltage	400 V class
Output current	456 A
Normal Duty	Approximately 250 kW
Heavy Duty	Lower than Normal Duty
Frame	Frame 7
Cooling	Air cooled
Enclosure	Industrial open/IP20 class
Communication	Network options available
Dimensions	Frame 7 configuration dependent
Weight (kg)	Configuration dependent

This is a practical alternative when the motor size is significantly below the 800 kW class.

56. PowerFlex 525 Alternative

The 25B-D030N114 is a compact PowerFlex 525 drive.

It is designed for a completely different application range.

Parameter	Specification
Model	25B-D030N114
Series	PowerFlex 525
Voltage	380–480 V AC
Input phase	3 phase
Output current	Approximately 30 A
Normal Duty power	Approximately 15 kW
Heavy Duty power	Approximately 11 kW
Frame	Frame D
Cooling	Forced air
Enclosure	IP20 / NEMA Open class
Communication	Embedded EtherNet/IP
Safety	Safe Torque Off class
Dimensions	Compact Frame D configuration
Weight (kg)	Approximately 18 kg class

Compared with the 20G11BC1K4JN0NNNNN, this is a small machine-level drive rather than a large plant-level drive.

57. Same-Series Comparison

Model	Output Current	Normal Duty	Heavy Duty	Frame	Depth	Cooling	Approx. Weight
20G11BC1K2JN0NNNNN	1,175 A	710 kW class	560 kW class	9	600 mm	Air	~1,250 kg
20G11BC1K4JN0NNNNN	1,465 A	800 kW	630 kW	9	600 mm	Air	~1,270 kg
20G11BC1K4JN2NNNNN	1,465 A	800 kW	630 kW	9	600 mm	Air	~1,270 kg
20G11BC1K4JN4NNNNN	1,465 A	800 kW	630 kW	9	600 mm	Air	~1,270 kg
20G11BC1K5JN2NNNNN	~1,480 A	~850 kW class	~710 kW class	9	600 mm class	Air	Configuration dependent

58. Selection by Application

Application Type	Recommended Model Class
Large centrifugal pump	1K2 / 1K4
Large cooling pump	1K4
Very large process pump	1K4 / 1K5
Large fan	1K4
Large blower	1K4
Large conveyor	1K2 / 1K4
High-inertia conveyor	1K4 with braking analysis
Mining ventilation	1K4
Cement plant fan	1K4
Water-treatment blower	1K2 / 1K4
Smaller industrial motor	PowerFlex 753
Compact machine	PowerFlex 525

59. Installation Environment

The 20G11BC1K4JN0NNNNN is best suited to a controlled industrial electrical environment.

The installation area should be protected from:

• Excessive moisture.
• Condensation.
• Uncontrolled dust.
• Corrosive substances.
• Excessive vibration.
• Excessive ambient temperature.
• Blocked ventilation.

60. Transportation Requirements

The approximately 1,270 kg weight means that transportation should be treated as a dedicated engineering task.

Before delivery, the project team should check:

• Plant entrance dimensions.
• Door width.
• Door height.
• Corridor clearance.
• Elevator capacity.
• Floor loading.
• Forklift capacity.
• Crane access.
• Final cabinet location.

A large drive can easily become an installation problem if transportation is not considered during the design phase.

61. Floor Loading

The approximate 1.27-tonne mass should be included in the electrical-room structural assessment.

This is especially important for:

• Raised floors.
• Elevated platforms.
• Modular buildings.
• Older industrial facilities.
• Areas with restricted structural loading.

62. Cable Selection

At approximately 1,465 A, power-cable selection becomes a major part of the installation.

The project should evaluate:

• Conductor size.
• Number of parallel conductors.
• Cable temperature.
• Installation method.
• Voltage drop.
• Short-circuit withstand.
• Termination arrangement.
• Grounding conductors.
• Motor-cable routing.

63. Grounding

Large variable-frequency drives require careful grounding.

A proper grounding system helps with:

• Personnel safety.
• Fault-current paths.
• EMC.
• Communication reliability.
• Reduction of electrical noise.
• Motor bearing-current mitigation strategies where applicable.

64. Communication Network

Because the drive can integrate into an EtherNet/IP-based control architecture, network design should include:

• Network topology.
• IP addressing.
• Cable routing.
• Industrial Ethernet hardware.
• Shielding and grounding.
• Switch configuration.
• Network redundancy where required.
• PLC data mapping.
• Drive status and fault handling.

65. Parameter Management

A large industrial drive should have a documented parameter backup.

The backup should include at least:

• Motor data.
• Speed limits.
• Acceleration.
• Deceleration.
• Control mode.
• Start command.
• Speed reference.
• Network settings.
• Fault configuration.
• Process-control settings.
• Safety-related settings where applicable.

66. Commissioning

A typical commissioning sequence should include:

Step 1 — Confirm the Catalog Number

Verify:

20G11BC1K4JN0NNNNN

The complete catalog number should be checked against the project documentation.

Step 2 — Verify the Power Supply

Check:

• Voltage.
• Phase.
• Frequency.
• Grounding.
• Protection.

Step 3 — Verify the Motor

Check:

• Motor voltage.
• Motor current.
• Motor frequency.
• Motor power.
• Motor speed.
• Motor duty.

Step 4 — Enter Motor Data

Enter the correct motor nameplate information.

Incorrect motor parameters can cause poor performance or unnecessary trips.

Step 5 — Check Rotation

Perform a controlled rotation test before full-load operation.

Step 6 — Run at Low Speed

Monitor:

• Current.
• Speed.
• Vibration.
• Temperature.
• Noise.
• Drive status.

Step 7 — Increase Speed Gradually

Observe both the drive and the mechanical system throughout the operating range.

Step 8 — Test Network Control

Verify:

• Start.
• Stop.
• Speed reference.
• Status feedback.
• Fault feedback.
• Alarm handling.

67. Troubleshooting

When a large drive trips, the problem should not automatically be assumed to be an internal drive failure.

A systematic investigation should check:

1. Incoming power.
2. Drive fault code.
3. Motor current.
4. Motor temperature.
5. Mechanical load.
6. Cooling airflow.
7. Motor cable.
8. Grounding.
9. Communication network.
10. Parameter settings.

68. Preventive Maintenance

A good preventive-maintenance program should monitor trends rather than waiting for a failure.

Useful information includes:

• Drive temperature.
• Motor current.
• Cooling-fan condition.
• Fault history.
• Alarm history.
• Communication status.
• Motor vibration.
• Cabinet temperature.
• Electrical connection condition.

69. Product Advantages Summary

The 20G11BC1K4JN0NNNNN has several characteristics that make it particularly suitable for large industrial installations.

Its approximately 1,465 A current rating provides substantial motor-control capacity.

Its 800 kW Normal Duty rating places it in a high-power industrial category.

Its 850 kW Light Duty capability is attractive for variable-torque applications such as large pumps and fans.

Its 630 kW Heavy Duty rating provides a useful operating point for more demanding applications.

The Frame 9, 600 mm MCC-style construction makes it appropriate for centralized electrical installations.

The air-cooled architecture is practical for properly engineered electrical rooms.

The embedded EtherNet/IP capability makes the drive suitable for integration with modern plant automation.

The JN0 no-HIM configuration can also be useful where the drive is intended to be controlled from a centralized automation system.

70. Important Limitations

The main limitations to consider are not necessarily electrical-performance limitations.

They are mostly related to installation and application engineering.

The equipment is:

• Very large.
• Very heavy.
• High current.
• Thermally demanding.
• Not suitable for small motors.
• Not equipped with an internal dynamic-braking transistor.
• Dependent on proper electrical protection.
• Dependent on appropriate motor selection.
• Dependent on adequate electrical-room ventilation.
• Dependent on suitable mechanical handling equipment.

71. Best Use Cases

The 20G11BC1K4JN0NNNNN is particularly well suited to:

Large Pumping Stations

Water Treatment Plants

Wastewater Facilities

Cooling-Water Systems

Large Industrial Fans

Large Blowers

Mining Systems

Cement Plants

Industrial Ventilation

Large Conveyors

High-Power Process Equipment

These applications commonly benefit from variable-speed control, centralized automation and high-current motor control.

72. Overall Technical Assessment

The 20G11BC1K4JN0NNNNN is a serious high-power industrial variable-frequency drive rather than a general-purpose compact inverter.

Its approximately 1,465 A output-current capacity, 800 kW Normal Duty rating and 850 kW Light Duty rating place it among the larger low-voltage industrial drive configurations.

The combination of 400 V AC, three-phase operation, Frame 9 construction, air cooling and 600 mm MCC-style depth makes it particularly suitable for centralized industrial electrical installations.

The product’s high current capacity makes it particularly attractive for large pumps, fans, blowers, conveyors and process machinery.

The embedded EtherNet/IP capability also allows the drive to participate in a centralized automation architecture.

The no-HIM JN0 configuration is especially appropriate when local operator control is not required and the drive will be managed through a PLC, HMI or supervisory control system.

73. Final Technical Parameter Table

Category	Specification
Model	20G11BC1K4JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product type	PowerFlex Air Cooled 755 AC Drive
Product configuration	755 AC Packaged Drive
Lifecycle	Active
Voltage	400 V AC class
Supply range	Approximately 380–480 V AC
Input	3 phase
Output	3 phase
Output current	1,465 A class
Light Duty	850 kW
Normal Duty	800 kW
Heavy Duty	630 kW
Frame	Frame 9
Cooling	Air cooled
Enclosure	IP20 / NEMA Type 1 class
Cabinet	600 mm Deep MCC Style
Input type	AC Input with Precharge
EMC filtering	Filtered
CM jumper	Installed
Dynamic braking	None
HIM	Blank / No HIM
Communication	Embedded EtherNet/IP
DC bus	Approximately 540 V DC class
Depth	600 mm
Height	Configuration dependent
Width	Configuration dependent
Approximate weight (kg)	1,270 kg
Approximate mass	1.27 metric tons
Installation	Industrial electrical room / MCC
Main applications	Pumps, fans, blowers, conveyors, process equipment, mining, water treatment

74. Final Conclusion

The 20G11BC1K4JN0NNNNN is a high-power Allen-Bradley PowerFlex 755 AC drive designed for large industrial motors and demanding plant-level applications.

Its main technical strengths are its 1,465 A current class, 850 kW Light Duty rating, 800 kW Normal Duty rating, 630 kW Heavy Duty rating, 400 V AC class, Frame 9 construction, air cooling, EMC filtering, AC input with precharge and 600 mm MCC-style configuration.

The approximate 1,270 kg weight makes this a major piece of electrical equipment, so transportation, lifting, floor loading, cabinet positioning and ventilation should all be included in the engineering plan.

The JN0 configuration is also distinctive because it is specified without a local HIM, making it a practical choice for installations where operators interact with the drive through a centralized PLC, HMI, SCADA or industrial Ethernet system.

For large pumps, industrial fans, blowers, conveyors, water-treatment equipment, cooling systems, mining machinery and other high-power process equipment, this model provides a strong combination of current capacity, industrial networking, variable-speed control and PowerFlex 755 platform compatibility.

When selecting an alternative, the 20G11BC1K2 configuration is appropriate when lower current capacity is sufficient, while the 20G11BC1K4JN2 and 20G11BC1K4JN4 configurations are useful when the same basic 1K4 power level is required with a different operator-interface configuration.

For modernization of an older AN0 configuration, the 20G11BC1K4JN0NNNNN is particularly significant because it is identified as the direct replacement for the discontinued 20G11BC1K4AN0NNNNN.

In practical terms, the 20G11BC1K4JN0NNNNN is best understood as a large-frame, high-current, air-cooled PowerFlex 755 drive for major industrial motor applications, where reliable variable-speed control, centralized automation and high-power electrical performance are more important than compact size or simple machine-level installation.