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Allen-Bradley 20G1F3C650KNANNNNN PowerFlex 755 AC Drive

1. Product Overview

The Allen-Bradley 20G1F3C650KNANNNNN is an air-cooled PowerFlex 755 AC packaged drive intended for large industrial motor-control applications. It belongs to the PowerFlex 755 family and is designed for applications where high motor current, stable speed control, reliable torque management, and flexible industrial integration are required.

The exact catalog number 20G1F3C650KNANNNNN is listed as an air-cooled 755 AC packaged drive. Related catalog listings place it alongside other high-current PowerFlex 755 configurations such as the 540 A, 585 A, 650 A, 750 A and 770 A versions.

The model number indicates a large-frame drive configuration rather than a small general-purpose inverter. With a nominal current designation of 650 A, this unit is intended for substantially larger motors and industrial machinery than compact PowerFlex drives.

The 20G1F3C650KNANNNNN is therefore better suited to large conveyors, heavy material-handling systems, large pumps, fans, compressors, process machinery, mills and other equipment requiring considerable motor power.

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2. Basic Product Information

Parameter	Specification
Model	20G1F3C650KNANNNNN
Brand	Allen-Bradley
Product Family	PowerFlex 755
Product Type	Air-Cooled AC Drive / AC Packaged Drive
Drive Series	PowerFlex 755
Catalog Family	20G1
Rated Current Designation	650 A
Input Voltage	400 V AC class
Input Phase	3 Phase
Cooling Method	Air Cooled
Mounting Concept	Industrial cabinet / panel installation
Application Class	Large industrial motor control
Motor Control	Variable-frequency AC motor control
Power Semiconductor	IGBT-based power conversion
Enclosure / Installation	Configuration-dependent
Communication	Configuration-dependent
Display / HIM	Configuration-dependent
Dimensions	Configuration-dependent; exact mechanical drawing should be used
Weight (kg)	Configuration-dependent; exact shipping/mechanical data should be confirmed

The exact model is consistently identified in catalog listings as an Air Cooled 755 AC Packaged Drive. The 650 A configuration is also listed with related 755 catalog numbers using different option combinations, which means that the final mechanical arrangement can vary according to the complete catalog configuration.

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3. Brand

Brand: Allen-Bradley

Allen-Bradley is widely associated with industrial automation equipment, motor control systems, programmable control, drives, motion products and factory automation components.

For this product, the relevant product family is the PowerFlex drive platform.

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4. Product Series

Series: PowerFlex 755

The 20G1F3C650KNANNNNN belongs to the PowerFlex 755 family.

The PowerFlex 755 family contains a very broad range of catalog configurations, including different voltage classes, current ratings, enclosure arrangements, control options, feedback options, communication options and application-specific accessories. The 650 A model is part of the high-current end of this product family.

This is important when selecting a replacement. Two PowerFlex 755 units may look similar from the outside while having different catalog suffixes and therefore different electrical or functional configurations.

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5. Detailed Model Identification

The catalog number is:

20G1F3C650KNANNNNN

The model-number structure contains configuration information relating to the PowerFlex 755 platform.

For practical purchasing and replacement work, the complete catalog number should always be treated as the identification reference rather than using only “PowerFlex 755” or “650 A.”

A difference such as 20G1F3C650KNANNNNN versus 20G1F3C650LNANNNNN, 20G1F3C650LNDNNNNN, or 20G1F3C650MNANNNNN does not necessarily represent a simple cosmetic variation. These catalog numbers can represent different packaged-drive configurations, options, ratings or installation arrangements. The related 650 A catalog numbers are documented as separate configurations within the same PowerFlex 755 family.

For that reason, the complete catalog number should be checked before ordering a replacement.

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6. Main Electrical Parameters

Parameter	20G1F3C650KNANNNNN
Model	20G1F3C650KNANNNNN
Drive Type	AC Variable Frequency Drive
Rated Current	650 A class
Input Voltage	400 V AC class
Input Phase	3 Phase
Motor Application	Three-phase AC motors
Cooling	Air cooled
Power Conversion	IGBT power stage
Frequency Control	Variable-frequency operation
Motor Speed Control	Yes
Torque Control	Supported through the PowerFlex control architecture
Acceleration / Deceleration	Programmable
Motor Protection	Available through drive configuration
Overcurrent Protection	Integrated drive protection functions
Electronic Motor Control	Yes
Feedback Options	Configuration-dependent
Communication Options	Configuration-dependent
Enclosure	Configuration-dependent
Dimensions	Configuration-dependent
Weight (kg)	Configuration-dependent

One third-party listing gives the exact model a 400 V AC, three-phase and 650 A specification, while other catalog records independently identify the same model as an air-cooled PowerFlex 755 packaged drive. Because some secondary listings contain inconsistent horsepower/kilowatt information for this exact catalog number, the 650 A rating and catalog identity are more reliable than an independently quoted motor-kW value.

For an actual engineering installation, the motor power should therefore be selected from the applicable duty rating, motor nameplate current, overload requirement and the complete drive configuration rather than simply converting 650 A into a nominal motor kW value.

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7. Physical Construction

The 20G1F3C650KNANNNNN is a large industrial drive rather than a compact wall-mounted inverter.

Its air-cooled architecture is intended to remove heat generated by the power electronics during continuous industrial operation.

For a drive in this current class, cabinet layout is an important part of the installation. Adequate clearance, ventilation, cable routing, grounding and service access should be considered before installation.

The exact physical dimensions should not be treated as a universal value for every PowerFlex 755 650 A configuration. The catalog family contains multiple mechanical arrangements, and the complete order code can change the physical construction.

Dimensions and Weight

Mechanical Parameter	Specification
Model	20G1F3C650KNANNNNN
Width	Configuration-dependent
Height	Configuration-dependent
Depth	Configuration-dependent
Overall Dimensions	Must be confirmed against the exact mechanical drawing
Mounting	Industrial cabinet / panel installation
Cooling	Air cooled
Weight (kg)	Configuration-dependent
Shipping Weight (kg)	Configuration-dependent
Service Clearance	Required around cooling and service areas

It is better to use “configuration-dependent” for the dimensions and weight than to provide an attractive but inaccurate number. The available catalog listings confirm the exact model and its packaged-drive classification, but they do not provide a sufficiently reliable fixed dimensional and weight figure for this specific configuration.

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8. Product Applications

The 20G1F3C650KNANNNNN is particularly appropriate for large industrial equipment where a standard small-frame variable-frequency drive would not provide enough current capacity.

Heavy-Duty Conveyors

Large conveyors used in mining, aggregate handling, cement plants, ports, steel plants and manufacturing facilities can require substantial motor current.

A high-current PowerFlex 755 configuration can provide controlled acceleration and deceleration while allowing the motor to operate at different speeds according to the process requirement.

This is useful when the conveyor needs smooth starting rather than the mechanical shock associated with direct-on-line starting.

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Pumps

Large process pumps, water pumps, cooling-water pumps and industrial circulation systems can benefit from variable-speed operation.

Instead of operating a pump continuously at full speed and regulating flow mechanically, the drive can vary motor speed according to process requirements.

This can also reduce mechanical stress on the pump and associated piping system.

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Fans and Blowers

Large ventilation fans, industrial blowers and process-air systems are another suitable application area.

Fan systems often operate at different process loads throughout the day.

Variable-speed control allows the motor to run at an appropriate speed rather than operating continuously at maximum speed.

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Compressors

Industrial compressors can require substantial motor power and careful control during acceleration.

A large-frame AC drive can provide controlled motor starting, adjustable speed and programmable operating parameters.

The suitability of a particular compressor depends on the compressor type, motor characteristics, required torque profile and the drive’s configured control mode.

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Material Handling Equipment

The drive can be considered for large material-handling machinery such as:

• Conveyors
• Transfer systems
• Feed systems
• Large hoisting machinery
• Bulk material handling
• Processing lines
• Industrial transport equipment

The ability to control acceleration and deceleration is particularly useful in systems where sudden speed changes could create mechanical stress.

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Process Machinery

The PowerFlex 755 platform is also suited to larger process machines.

Typical examples include:

• Mills
• Mixers
• Extrusion machinery
• Processing equipment
• Large rotating machinery
• Production lines
• Industrial machinery
• Continuous-process equipment

The exact suitability depends on the motor type and required operating profile.

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9. Major Product Advantages

9.1 High Current Capacity

The most obvious characteristic of the 20G1F3C650KNANNNNN is its large current class.

At approximately 650 A, it is designed for applications substantially larger than compact general-purpose variable-frequency drives.

This makes it useful for large motors and centralized industrial equipment where high current capacity is required.

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9.2 PowerFlex 755 Platform

The PowerFlex 755 platform provides a broad industrial drive architecture rather than a simple basic frequency converter.

It is designed around flexible motor-control requirements, allowing the drive to be adapted to different types of machinery and control systems.

This flexibility is particularly valuable in plants where different machines have different speed, torque, feedback and communication requirements.

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9.3 Air-Cooled Design

The air-cooled architecture provides a practical solution for industrial installations where forced-air cooling is preferred.

The cooling system is important because high-power semiconductor components generate considerable heat during operation.

Correct cabinet ventilation and airflow management are therefore essential.

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9.4 Smooth Motor Starting

One of the major benefits of a variable-frequency drive is controlled motor acceleration.

Instead of applying full line voltage directly to the motor, the drive controls the motor’s electrical operating conditions during acceleration.

This can reduce mechanical shock on:

• Shafts
• Couplings
• Gearboxes
• Belts
• Chains
• Conveyors
• Pumps
• Fans

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9.5 Adjustable Speed

The motor can operate at different speeds according to process requirements.

This is particularly useful for production systems where the machine does not need to operate at one fixed speed.

Adjustable-speed operation can also simplify process control.

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9.6 Better Process Control

A large industrial drive can become part of the overall automation system rather than functioning only as a motor starter.

Speed commands, feedback signals, alarms, status information and operating parameters can be incorporated into a larger control architecture depending on the installed options.

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9.7 Flexible Industrial Integration

PowerFlex 755 configurations can be equipped with different communication and feedback arrangements.

This allows the drive to be incorporated into larger automation systems.

The exact communication capability of 20G1F3C650KNANNNNN should be confirmed from the complete order configuration rather than assumed from the PowerFlex 755 family name alone.

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10. Typical Application Areas

Industry	Typical Equipment	Suitability
Mining	Large conveyors, crushers, feeders	High-current motor control
Cement	Fans, conveyors, mills	Large rotating equipment
Steel	Process lines, fans, conveyors	Heavy industrial machinery
Water Treatment	Large pumps, blowers	Variable-speed pumping
Manufacturing	Production machinery	Process speed control
Chemical Processing	Pumps, mixers, fans	Continuous process control
Material Handling	Conveyors, transfer systems	Controlled acceleration
HVAC / Industrial Ventilation	Large fans and blowers	Variable-speed operation
Food Processing	Large mixers and conveyors	Controlled process speed
Power / Utilities	Pumps, fans and auxiliary equipment	Large motor applications

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11. Recommended Related Models

The following five models are closely related to the 20G1F3C650KNANNNNN and belong to the same PowerFlex 755 catalog family.

They are particularly useful when comparing replacement units, alternative current ratings or different configuration options.

Model	Product Type	Current Class	Voltage Class	Cooling	Typical Use	Dimensions	Weight (kg)
20G1F3C585LNANNNNN	PowerFlex 755 AC Drive	585 A	400 V class	Air cooled	Large industrial motors	Configuration-dependent	Configuration-dependent
20G1F3C650LNANNNNN	PowerFlex 755 AC Packaged Drive	650 A	400 V class	Air cooled	Large conveyors / pumps / fans	Configuration-dependent	Configuration-dependent
20G1F3C650LNDNNNNN	PowerFlex 755 AC Packaged Drive	650 A	400 V class	Air cooled	High-current industrial applications	Configuration-dependent	Configuration-dependent
20G1F3C750LNANNNNN	PowerFlex 755 AC Packaged Drive	750 A class	400 V class	Air cooled	Very large industrial motors	Configuration-dependent	Configuration-dependent
20G1F3C770KNDNNNNN-P50	PowerFlex 755 AC Packaged Drive	770 A class	400 V class	Air cooled	Large industrial machinery	Configuration-dependent	Configuration-dependent

These catalog numbers are listed within the same PowerFlex 755 family and show the broad range of current and option configurations available around the 650 A class.

The 585 A and 750/770 A models are especially useful comparison points because they show how the same general product family can be selected for different motor-current requirements.

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12. Comparison of the Main Related Models

Model	Current	Relative Position	Cooling	Product Configuration	Dimensions	Weight (kg)
20G1F3C585LNANNNNN	585 A	Lower than 650 A	Air cooled	755 packaged drive	Configuration-dependent	Configuration-dependent
20G1F3C650KNANNNNN	650 A	Reference model	Air cooled	755 packaged drive	Configuration-dependent	Configuration-dependent
20G1F3C650LNANNNNN	650 A	Same current class	Air cooled	755 packaged drive	Configuration-dependent	Configuration-dependent
20G1F3C650LNDNNNNN	650 A	Same current class	Air cooled	755 packaged drive	Configuration-dependent	Configuration-dependent
20G1F3C750LNANNNNN	750 A	Higher than 650 A	Air cooled	755 packaged drive	Configuration-dependent	Configuration-dependent
20G1F3C770KNDNNNNN-P50	770 A	Higher than 650 A	Air cooled	755 packaged drive	Configuration-dependent	Configuration-dependent

The exact catalog listings show that the 650 A range includes several distinct configurations. Consequently, 20G1F3C650KNANNNNN should not automatically be replaced by another 650 A model without checking the suffix and options.

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13. Five Popular Allen-Bradley Models for Comparison

For broader product selection, the following models are useful representatives of the same brand’s industrial drive portfolio.

Model	Product Family	General Product Type	Typical Application	Voltage / Current	Cooling	Dimensions	Weight (kg)
20F1AND302JN0NNNNN	PowerFlex 753	Air-Cooled AC Drive	Industrial motor control	Configuration-dependent	Air cooled	Configuration-dependent	Configuration-dependent
20F1AGC302JN0NNNNN	PowerFlex 753	Air-Cooled AC Drive	Pumps, fans, conveyors	Configuration-dependent	Air cooled	Configuration-dependent	Configuration-dependent
20G1ANC367AA0NNNNN	PowerFlex 755	Air-Cooled AC Drive	Large industrial machinery	Configuration-dependent	Air cooled	Configuration-dependent	Configuration-dependent
20G1ANC456JN0NNNNN	PowerFlex 755	Air-Cooled AC Drive	High-power motor control	Configuration-dependent	Air cooled	Configuration-dependent	Configuration-dependent
20G1ANC477JN0NNNNN	PowerFlex 755	Air-Cooled AC Drive	Large industrial equipment	Configuration-dependent	Air cooled	Configuration-dependent	Configuration-dependent

The 753 and 755 families contain numerous catalog configurations, and the exact voltage, current, enclosure, control and communication characteristics depend on the complete catalog number. Related catalog records list these models as air-cooled 753 or 755 drives.

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14. PowerFlex 753 vs. PowerFlex 755

The PowerFlex 753 and PowerFlex 755 families are closely related industrial drive platforms, but they are not simply interchangeable versions of the same catalog number.

For a machine designer, the choice normally depends on factors such as:

• Motor size
• Motor current
• Required control mode
• Feedback requirements
• Communication requirements
• Regenerative requirements
• Installation method
• Cabinet arrangement
• Safety requirements
• Application complexity
• Required expansion options

For a large, demanding machine, the PowerFlex 755 family is often considered when the application requires a more configurable drive architecture.

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15. Installation Considerations

The 20G1F3C650KNANNNNN should be installed as an industrial power-electronics system rather than treated like a small standalone inverter.

Before installation, engineers should check:

1. Incoming voltage.
2. Available short-circuit current.
3. Motor nameplate voltage.
4. Motor full-load current.
5. Motor service factor.
6. Required overload capacity.
7. Acceleration time.
8. Deceleration time.
9. Required braking method.
10. Grounding arrangement.
11. Motor cable size.
12. Cabinet ventilation.
13. Ambient temperature.
14. Required service clearance.
15. Communication requirements.
16. Feedback requirements.
17. Protective-device coordination.
18. Motor insulation suitability.
19. Drive mechanical dimensions.
20. Actual drive weight and lifting requirements.

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16. Cooling and Cabinet Design

Because this is a large air-cooled drive, cabinet airflow deserves particular attention.

Heat generated by the power section must be removed from the enclosure.

Poor ventilation can cause the internal temperature to rise, which can shorten component life and cause thermal protection to operate.

The cabinet should therefore be designed around:

• Airflow direction
• Fan capacity
• Ambient temperature
• Internal heat dissipation
• Filter condition
• Cable entry
• Service access
• Drive spacing

The actual cabinet design should be based on the complete installation drawing and the environmental conditions of the application.

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17. Motor Compatibility

The drive is intended for three-phase AC motor control.

Before connecting a motor, the following information should be checked:

Motor Parameter	Required Check
Motor Voltage	Must match the drive application
Motor Current	Must be within the selected drive capability
Motor Frequency	Confirm 50/60 Hz requirement
Motor Speed	Confirm base and maximum speed
Motor Power	Confirm against drive duty rating
Motor Type	Confirm compatible control mode
Motor Insulation	Check suitability for VFD operation
Motor Cable	Check length, insulation and grounding
Encoder	Required only when feedback control is used
Brake	Check braking requirements separately

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18. Why the 650 A Rating Matters

A 650 A-class drive is not normally selected simply because a machine happens to have a large motor.

The current rating has to be evaluated against the actual motor operating conditions.

A motor operating under heavy continuous load may require a different drive selection from a motor that only experiences short periods of high load.

Likewise, applications with high starting torque, frequent acceleration, frequent braking or high overload requirements need more careful sizing.

For this reason, the 20G1F3C650KNANNNNN should be evaluated using the motor nameplate current and the application’s duty cycle rather than relying only on horsepower conversion.

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19. Product Advantages at a Glance

Advantage	Description
High Current Capacity	Designed for large industrial motor applications
PowerFlex 755 Platform	Flexible architecture for demanding motor-control systems
Air Cooling	Practical thermal-management method for large industrial drives
Variable Speed	Allows motor speed to be matched to process requirements
Controlled Acceleration	Reduces mechanical shock during starting
Controlled Deceleration	Provides programmable stopping characteristics
Industrial Integration	Can be incorporated into larger automation systems
Expandability	PowerFlex 755 configurations support various options
Large Motor Support	Suitable for substantially larger motors than compact drives
Wide Application Range	Suitable for pumps, fans, conveyors and process machinery

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20. Recommended Selection Strategy

If the existing installation already uses 20G1F3C650KNANNNNN, the safest replacement strategy is to start with the exact same catalog number.

If the exact unit is unavailable, the next step should be to compare another 650 A PowerFlex 755 configuration.

For example, 20G1F3C650LNANNNNN and 20G1F3C650LNDNNNNN are related 650 A catalog numbers, but they should not be considered automatic drop-in replacements. Their complete configuration must be checked before substitution.

If the application has higher current requirements, the 750 A and 770 A configurations provide another comparison point.

If the application has lower current requirements, the 585 A configuration may be relevant.

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21. Important Mechanical Data Note

For industrial drives of this size, dimensions and weight are often affected by the exact enclosure, packaged-drive arrangement, power section, options and installation configuration.

Therefore, the following information should be treated as the correct engineering approach:

Item	20G1F3C650KNANNNNN
Model	20G1F3C650KNANNNNN
Width	Exact configuration dependent
Height	Exact configuration dependent
Depth	Exact configuration dependent
Net Weight (kg)	Exact configuration dependent
Shipping Weight (kg)	Exact configuration dependent
Installation Drawing	Required for final cabinet design
Mounting Hole Pattern	Confirm from mechanical drawing
Lifting Requirement	Confirm before installation
Cabinet Clearance	Confirm from installation documentation

This avoids using an incorrect fixed dimension or an unverified weight for a large industrial drive.

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22. Overall Product Description

The Allen-Bradley 20G1F3C650KNANNNNN is a high-current, air-cooled PowerFlex 755 AC packaged drive intended for large industrial motor-control applications.

Its 650 A class places it in the high-power portion of the PowerFlex 755 product family.

The drive is particularly suitable for industrial machinery where precise speed control, controlled acceleration, large motor-current capacity and integration with an automation system are important.

Typical applications include large conveyors, pumps, fans, blowers, compressors, process machinery, material-handling systems and other large rotating equipment.

The biggest practical advantage of this model is not simply its nominal current rating. It is the combination of high-current capability and the broader PowerFlex 755 architecture, which allows the drive to be configured for demanding industrial applications.

The complete catalog number is important because the PowerFlex 755 family contains many closely related models. Catalog numbers such as 20G1F3C650KNANNNNN, 20G1F3C650LNANNNNN, 20G1F3C650LNDNNNNN, 20G1F3C750LNANNNNN and 20G1F3C770KNDNNNNN-P50 appear as separate configurations within the same product family.

For replacement, procurement and engineering purposes, the complete 20G1F3C650KNANNNNN catalog number should therefore be retained.

In particular, the electrical rating, enclosure arrangement, control options, feedback, communication options, physical dimensions and actual equipment weight should be checked against the exact unit before purchasing or designing the replacement cabinet.

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23. Quick Reference

Specification	Details
Model	20G1F3C650KNANNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product Type	Air-Cooled AC Packaged Drive
Current Class	650 A
Voltage Class	400 V AC
Phase	3 Phase
Cooling	Air Cooled
Motor Control	Variable-Frequency AC Motor Control
Intended Equipment	Large Industrial Motors
Typical Applications	Pumps, fans, conveyors, compressors, process machinery, material handling
Installation	Industrial cabinet / panel environment
Dimensions	Configuration-dependent
Weight (kg)	Configuration-dependent
Recommended Replacement Practice	Match the complete catalog number whenever possible

24. Final Summary

Allen-Bradley 20G1F3C650KNANNNNN is a PowerFlex 755 air-cooled AC packaged drive in the 650 A class, intended for large industrial motor-control applications.

It is most appropriate for machinery that requires substantial motor current and controlled variable-speed operation.

The product’s main strengths are its high-current capability, industrial construction, air-cooled architecture, flexible PowerFlex 755 platform and suitability for large rotating machinery.

For purchasing or replacement work, the most important point is to compare the complete catalog number, not only the PowerFlex 755 series name or the 650 A current rating.

The closest comparison models include the 585 A, 650 A, 750 A and 770 A PowerFlex 755 configurations, while the PowerFlex 753 family provides a useful comparison when a different drive architecture or lower-power application is being considered.

Because the exact mechanical construction can vary between catalog configurations, dimensions and weight should be confirmed from the mechanical documentation for the exact 20G1F3C650KNANNNNN unit before cabinet fabrication, transportation planning or replacement installation.