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20BC170A0NNNANC0 Product Overview and Technical Guide

1. Product Introduction

The 20BC170A0NNNANC0 is a high-power AC variable frequency drive belonging to the PowerFlex 700, 20B Series. It is designed for industrial three-phase motor control applications where high output current, reliable speed regulation, controlled acceleration and deceleration, and flexible motor-control functions are required.

This model is a 400 V-class, three-phase AC drive with a 170 A continuous output-current rating. Its normal-duty power rating is approximately 90 kW, while its heavy-duty application rating is approximately 75 kW. This makes it suitable for relatively large industrial motors and machinery.

The model is particularly appropriate for industrial installations where a motor needs to operate at adjustable speeds rather than simply running directly from the fixed-frequency electrical supply. By controlling the output frequency and voltage supplied to the motor, the drive can regulate motor speed and torque according to the requirements of the machine.

The 20BC170A0NNNANC0 is a Frame 6 PowerFlex 700 configuration. It uses an IP20 enclosure arrangement and is intended to be installed inside an appropriate electrical cabinet or protected industrial enclosure.

The catalog configuration is also characterized by the absence of an internal brake IGBT and internal braking resistor. It is therefore important to evaluate the stopping characteristics and regenerative energy of the application before selecting the drive for machinery requiring rapid deceleration.

The model is especially relevant to high-power applications such as conveyors, pumps, fans, mixers, compressors, process machinery, material-handling equipment, and general industrial production machinery.

2. Brand and Product Series

Category	Specification
Brand	Allen-Bradley
Product family	PowerFlex 700 AC Drive
Series	20B
Catalog number	20BC170A0NNNANC0
Product type	AC Variable Frequency Drive
Drive category	Industrial AC Motor Drive
Frame	Frame 6
Voltage class	400 V AC
Input power	3-phase AC
Output	3-phase variable-frequency AC
Continuous output current	170 A
Normal-duty power	Approximately 90 kW
Heavy-duty power	Approximately 75 kW
Enclosure	IP20 / NEMA Type 1 installation
Control	Vector-oriented motor control
Brake IGBT	Not included
Internal brake resistor	Not included
Feedback	No feedback option in the basic configuration
Communication module	No internal communication module in the basic configuration
Filter configuration	EMC filter / common-mode choke configuration
Cooling	Forced-air cooling
Installation	Electrical cabinet / protected industrial enclosure
Product generation	Legacy industrial AC drive platform

The most important identification information is the complete catalog number 20BC170A0NNNANC0. Similar-looking PowerFlex 700 models can have different voltage classes, current ratings, braking configurations, communication options, feedback functions, filters, or enclosure arrangements.

3. Main Technical Specifications

Parameter	Specification
Model	20BC170A0NNNANC0
Product family	PowerFlex 700
Series	20B
Frame size	Frame 6
Input voltage	380–400 V AC class
Nominal mains voltage	400 V AC
Input phase	3-phase
Input frequency	50 Hz nominal
Output phase	3-phase
Continuous output current	170 A
Normal-duty rating	Approximately 90 kW
Heavy-duty rating	Approximately 75 kW
Output voltage	Variable, up to approximately 400 V AC
Output frequency	Adjustable, application dependent
Maximum frequency capability	Up to approximately 400 Hz
PWM frequency	Approximately 4 kHz at 400 V conditions
Control method	Vector-oriented AC motor control
Digital inputs	6
Digital outputs	3
Analog inputs	2
Analog outputs	2
Communication module	None in standard configuration
Feedback option	None in standard configuration
Brake IGBT	Without brake IGBT
Internal braking resistor	Not included
EMC filtering	EMC filter / common-mode choke configuration
Enclosure protection	IP20
NEMA classification	Type 1 when installed in suitable enclosure/system arrangement
Maximum ambient operating temperature	Approximately 50°C under specified conditions
Maximum altitude without derating	Approximately 1,000 m
Storage temperature	Approximately -40°C minimum
Cooling	Forced air
Mounting	Cabinet/panel mounting
Approximate frame dimensions	Approximately 700 × 350 × 350 mm class
Approximate dimensions	Approximately 700 × 350 × 350 mm (H × W × D)
Approximate weight	Approximately 45 kg
Installation environment	Indoor industrial environment
Motor type	Three-phase AC induction / compatible AC motor
Typical motor size	Up to approximately 90 kW normal duty
Typical applications	Pumps, fans, conveyors, mixers, process machinery, material handling

Dimension and weight note: physical dimensions and shipping weight can vary with the exact frame arrangement, junction-box configuration, terminal configuration, and installed accessories. For cabinet engineering, transportation, or mechanical replacement, the actual unit’s mechanical drawing and nameplate should be treated as the final dimensional reference.

4. Electrical Characteristics

The 20BC170A0NNNANC0 is designed around a 400 V-class three-phase industrial electrical system.

Its 170 A continuous output rating is one of the most important selection parameters. In practice, the drive should not be selected merely by comparing the nominal motor horsepower. The motor’s actual full-load current, overload characteristics, duty cycle, acceleration requirements, ambient conditions, and installation altitude should all be considered.

For normal-duty applications, the drive is generally associated with motors around the 90 kW class.

For heavy-duty applications requiring greater overload capability, the usable motor rating is reduced to approximately the 75 kW class.

This distinction is important because a motor that appears to match the drive based on horsepower may still exceed the drive’s thermal or current capability when operating under heavy-duty conditions.

5. Normal-Duty and Heavy-Duty Selection

Application condition	Approximate rating
Normal-duty motor rating	90 kW class
Heavy-duty motor rating	75 kW class
Continuous output current	170 A
Short-term overload	Higher than continuous rating, depending on duty configuration
Recommended selection basis	Motor current + overload requirement
Primary selection parameter	Motor full-load current
Secondary selection parameter	Motor power
Additional consideration	Ambient temperature and altitude

For conveyors, crushers, mixers, extruders, hoists, and other machines with high starting torque or frequent acceleration, heavy-duty selection should be considered rather than relying only on the nominal 90 kW normal-duty rating.

6. Control Technology

The drive is designed for sophisticated industrial AC motor control rather than simple fixed-frequency motor operation.

The drive can vary the output frequency and voltage according to the motor-control requirements.

This allows the connected motor to operate at different speeds while maintaining controlled acceleration, deceleration, and torque behavior.

Vector-oriented control is particularly useful for machines where the load changes during operation. Compared with basic scalar control, vector-based control can provide improved speed regulation and dynamic response.

7. Motor Speed Control

A major advantage of the 20BC170A0NNNANC0 is its ability to control motor speed continuously.

For example, a conveyor may need to operate slowly during loading and faster during normal production.

A pump may need different speeds according to process demand.

A fan may need to operate at different speeds according to airflow requirements.

A mixer may require a low-speed mixing stage followed by a high-speed stage.

In each case, the drive can adjust the motor’s operating speed without requiring mechanical gear changes for every operating condition.

8. Acceleration and Deceleration

The drive provides configurable acceleration and deceleration functions.

Controlled acceleration is valuable for high-power machinery because starting a large motor directly from the line can produce substantial electrical and mechanical stress.

A controlled acceleration profile can help reduce:

• Motor starting stress
• Gearbox shock
• Belt tension shock
• Coupling stress
• Conveyor material movement
• Mechanical vibration
• Production disturbances

Controlled deceleration can provide similar benefits when stopping the machine.

However, the stopping process must be evaluated carefully in applications with large rotating inertia. When a motor decelerates, energy can be returned to the drive’s DC bus. If the application produces significant regenerative energy, an appropriate braking arrangement may be necessary.

9. Brake Configuration

The 20BC170A0NNNANC0 configuration does not include an internal brake IGBT.

It also does not include an internal brake resistor.

This is not necessarily a disadvantage. Many industrial applications do not require dynamic braking.

For example, a pump or fan that naturally slows down after the stop command may not require an aggressive braking system.

On the other hand, applications such as high-inertia conveyors, unwinders, winders, centrifuges, and certain material-handling systems may require additional braking equipment.

Therefore, braking requirements should be determined from:

• Motor power
• Motor speed
• Load inertia
• Required stopping time
• Number of stops per hour
• Direction of rotation
• Regenerative energy
• Mechanical braking system
• Required emergency stopping behavior

10. Feedback Configuration

The basic configuration does not include an encoder feedback option.

For standard open-loop vector applications, this may be completely adequate.

However, certain machines require more precise speed regulation or position-related control.

Typical examples include:

• High-precision material handling
• Winding machinery
• Certain machine tools
• Hoisting systems
• Specialized production machinery

If encoder feedback is required, a suitable feedback-capable configuration should be selected rather than assuming the base 20BC170A0NNNANC0 can provide closed-loop feedback without additional hardware.

11. Communication

The basic configuration does not include an internal communication module.

This means the exact automation architecture should be reviewed before integration.

Industrial applications may require communication between the drive and a PLC, HMI, supervisory control system, or other automation equipment.

Typical information exchanged between a drive and controller can include:

• Start command
• Stop command
• Speed reference
• Output frequency
• Motor current
• Motor speed
• Drive status
• Fault status
• Warning status
• DC bus voltage
• Acceleration/deceleration control
• Parameter information

12. I/O Capability

The drive provides a combination of analog and digital I/O suitable for hardwired control.

I/O type	Approximate quantity
Digital inputs	6
Digital outputs	3
Analog inputs	2
Analog outputs	2

The I/O can be used for functions such as:

• Start
• Stop
• Forward
• Reverse
• Jog
• External fault
• Speed selection
• Speed reference
• Current monitoring
• Frequency monitoring
• Status indication
• Interlock signals

13. Enclosure and Installation

The 20BC170A0NNNANC0 uses an IP20-class enclosure configuration.

IP20 equipment is intended to be protected from direct environmental exposure and is normally installed inside an electrical cabinet or suitable industrial enclosure.

The enclosure should provide adequate protection against:

• Dust
• Water
• Oil mist
• Chemical contamination
• Mechanical impact
• Excessive humidity

The cabinet must also provide sufficient ventilation because a high-power drive generates heat during operation.

14. Approximate Mechanical Parameters

Mechanical parameter	Approximate value
Frame	Frame 6
Height	≈700 mm
Width	≈350 mm
Depth	≈350 mm
Overall size class	Large industrial drive
Approximate volume	≈0.086 m³
Approximate weight	≈45 kg
Mounting	Panel/cabinet
Cooling	Forced air
Installation clearance	Must follow drive installation requirements
Service access	Front and terminal access required
Cabinet ventilation	Required

These values are intended for general planning only. Actual dimensions can differ depending on the specific Frame 6 mechanical arrangement and installed options.

For a replacement project, the actual physical unit should be measured or its mechanical drawing should be checked before manufacturing a cabinet.

15. Product Applications

15.1 Conveyor Systems

The 20BC170A0NNNANC0 is well suited to large conveyor systems.

Large conveyors can experience significant inertia and starting torque. Controlled acceleration can help prevent belt shock and reduce mechanical stress.

Typical applications include:

• Mining conveyors
• Bulk-material conveyors
• Warehouse conveyors
• Manufacturing conveyors
• Packaging lines
• Heavy material-transfer systems

15.2 Pumps

The drive is suitable for large industrial pump motors.

Variable-speed operation allows the motor to respond to changing process requirements.

Typical applications include:

• Industrial water pumps
• Cooling-water systems
• Process pumps
• Circulation pumps
• Water-treatment systems
• Industrial utility systems

15.3 Fans and Blowers

Large ventilation and process fans can use variable-speed operation to regulate airflow.

This is particularly useful when the process does not require full airflow continuously.

Typical applications include:

• Industrial ventilation
• Furnace fans
• Exhaust systems
• Cooling systems
• Process air systems
• Dust collection systems

15.4 Mixers

Large mixers often require controlled torque during startup and adjustable speed during the mixing process.

The drive can provide controlled acceleration and adjustable operating speed.

Typical applications include:

• Chemical processing
• Material blending
• Industrial mixing
• Food-processing machinery
• Process tanks
• Manufacturing systems

15.5 Material Handling

The high current capacity makes this drive suitable for larger material-handling systems.

Applications can include:

• Rollers
• Conveyors
• Transfer systems
• Production-line material handling
• Bulk material systems
• Industrial lifting auxiliaries

15.6 Compressors

Variable-speed control can be useful for industrial compressor systems where the required operating condition changes over time.

The drive can provide controlled starting and adjustable operating speed, reducing the need to operate the motor continuously at maximum speed.

15.7 Process Machinery

The drive can also be incorporated into continuous production machinery.

Examples include:

• Extrusion equipment
• Processing lines
• Production machines
• Industrial automation equipment
• Large rotating machinery
• Manufacturing systems

16. Main Product Advantages

High Current Capability

The 170 A output rating gives the drive substantial motor-control capacity.

This makes it appropriate for large industrial motors and heavy production equipment.

High-Power Industrial Operation

The approximately 90 kW normal-duty rating allows the drive to control motors considerably larger than those typically served by compact machine drives.

Vector-Control Capability

Vector control provides improved motor-speed and torque regulation compared with basic V/Hz operation.

This is valuable where the machine experiences changing loads or requires more controlled motor behavior.

Controlled Motor Starting

Large motors can create significant starting current and mechanical stress.

The drive provides a controlled starting process that can reduce mechanical shock and improve machine operation.

Adjustable Speed

Motor speed can be adjusted according to the process requirement.

This can improve production flexibility and can also reduce unnecessary energy consumption in applications such as pumps and fans.

Industrial I/O

The combination of digital and analog I/O makes the drive suitable for hardwired machine-control systems.

High-Power Application Flexibility

The PowerFlex 700 platform covers many industrial applications, allowing engineers to use a familiar drive architecture across different machine types.

Robust Industrial Construction

The drive is designed for installation in industrial control cabinets and is intended for continuous industrial operation when correctly installed, cooled, protected, and configured.

17. Energy-Related Benefits

A variable-frequency drive can provide important energy benefits, particularly in variable-torque applications.

For example, a centrifugal fan or pump does not necessarily need to run at full speed all the time.

By reducing motor speed when process demand is lower, the mechanical power requirement can decrease significantly.

The actual energy savings depend on:

• Motor efficiency
• Load type
• Operating schedule
• Speed profile
• Process requirements
• Pump/fan system characteristics
• Drive efficiency
• Mechanical losses

Consequently, the drive should not be viewed as automatically reducing energy consumption in every application. Its greatest energy-saving potential is generally found where the mechanical load naturally decreases with motor speed.

18. Reliability Advantages

The drive can improve machine reliability by controlling the motor in a predictable manner.

Direct-on-line starting can place significant stress on mechanical components.

Variable-frequency starting allows the machine to accelerate according to a programmed profile.

This can reduce stress on:

• Bearings
• Gearboxes
• Couplings
• Belts
• Chains
• Shafts
• Conveyor structures
• Pumps
• Fans

19. Recommended Same-Series or Closely Related Models

The following five models are useful comparison candidates within the PowerFlex 700 / 20B family or very closely related configurations.

The exact catalog suffix determines options, so these models should be compared carefully before treating any of them as a replacement.

Model	Series	Voltage class	Current class	Normal-duty power	Heavy-duty power	Frame / size class	Approx. dimensions	Approx. weight
20BC170A0NNNANC0	PowerFlex 700 / 20B	400 V	170 A	90 kW	75 kW	Frame 6	≈700 × 350 × 350 mm	≈45 kg
20BC170A0NNNANN0	PowerFlex 700 / 20B	400 V	170 A	90 kW	75 kW	Frame 6	≈700 × 350 × 350 mm	≈45 kg
20BC170A0ANNANC0	PowerFlex 700 / 20B	400 V	170 A	90 kW	75 kW	Frame 6	≈700 × 350 × 350 mm	≈45 kg
20BC170A0ANNANA0	PowerFlex 700 / 20B	400 V	170 A	90 kW	75 kW	Frame 6	≈700 × 350 × 350 mm	≈45 kg
20BD170A0NNNANC0	PowerFlex 700 / 20B	480 V class	170 A class	Application dependent	Application dependent	Frame 6 class	≈700 × 350 × 350 mm	≈45 kg

The first four models are particularly close to the original because they maintain the same general 170 A / 400 V / Frame 6 architecture, while their catalog suffixes can represent differences in options and configuration.

The 20BD configuration belongs to the same general PowerFlex 700 platform but is intended for a higher-voltage 480 V-class electrical system. It should therefore not be considered a direct replacement for a 400 V drive without checking the complete electrical system.

20. Comparison of Same-Series Models

Model	Input	Output current	Power class	Feedback	Brake IGBT	Communication	Enclosure	Approx. dimensions	Weight kg
20BC170A0NNNANC0	400 V, 3-phase	170 A	90 kW ND / 75 kW HD	No	No	Basic configuration	IP20	≈700 × 350 × 350 mm	≈45
20BC170A0NNNANN0	400 V, 3-phase	170 A	90 kW ND / 75 kW HD	No	No	Basic configuration	IP20	≈700 × 350 × 350 mm	≈45
20BC170A0ANNANC0	400 V, 3-phase	170 A	90 kW ND / 75 kW HD	Configuration dependent	No	Configuration dependent	IP20	≈700 × 350 × 350 mm	≈45
20BC170A0ANNANA0	400 V, 3-phase	170 A	90 kW ND / 75 kW HD	No	No	No internal module	IP20	≈700 × 350 × 350 mm	≈45
20BD170A0NNNANC0	480 V class, 3-phase	170 A class	Application dependent	Configuration dependent	Configuration dependent	Configuration dependent	IP20	≈700 × 350 × 350 mm	≈45

21. Five Popular Models from the Same Brand

For a broader comparison, the following five models represent commonly encountered products from the same brand’s industrial variable-frequency drive portfolio.

Model	Product family	Voltage class	Current / power class	Typical application	Control	Approx. dimensions	Weight kg
25B-D017N104	PowerFlex 525	480 V class	17 A class	Small conveyors, pumps, fans	Sensorless vector	≈260 × 140 × 170 mm	≈4
25B-D010N104	PowerFlex 525	480 V class	10 A class	Small machinery and pumps	Sensorless vector	≈220 × 120 × 160 mm	≈3
22B-D017N104	PowerFlex 40	480 V class	17 A class	General machine control	Sensorless vector	≈260 × 140 × 170 mm	≈4
20F11ND077JA0NNNNN	PowerFlex 753	480 V class	77 A class	Large industrial machinery	Advanced vector control	≈600 × 300 × 300 mm	≈30–40
20G11ND077JA0NNNNN	PowerFlex 755	480 V class	77 A class	High-performance machinery	Advanced vector control	≈600 × 300 × 300 mm	≈30–40

The dimensions and weights in this comparison are approximate equipment-planning values. Compact-drive dimensions vary significantly by power rating and frame. Larger modular drive systems can also change size and weight depending on installed options.

22. PowerFlex 525

The PowerFlex 525 is a compact AC drive platform aimed at lower-power industrial applications.

Compared with the 20BC170A0NNNANC0, it is dramatically smaller and is intended for a completely different motor-power range.

Its main strengths include compact installation, relatively simple integration, and suitability for distributed machine automation.

Typical applications include:

• Small conveyors
• Small pumps
• Fans
• Packaging machines
• Small processing machines
• General machine automation

It should not be considered a direct replacement for a 170 A high-power drive.

23. PowerFlex 40

The PowerFlex 40 family is another compact industrial drive platform.

It is useful for straightforward motor-speed control applications where the motor rating is considerably lower than the 90 kW class associated with the 20BC170A0NNNANC0.

Typical applications include:

• Small conveyors
• Pumps
• Fans
• Machine tools
• Packaging equipment
• Small production machinery

24. PowerFlex 753

The PowerFlex 753 is much more relevant when the user is considering a high-power modernization project.

It is designed for larger industrial machinery and more advanced control requirements.

Typical applications include:

• Large conveyors
• Pumps
• Fans
• Compressors
• Process machinery
• Material handling
• Production equipment

It can be a more suitable direction when an older high-power drive needs to be replaced with a newer-generation architecture.

25. PowerFlex 755

The PowerFlex 755 is intended for advanced industrial motor-control applications.

It is particularly relevant where the machine requires sophisticated control functions, system integration, feedback options, and high-performance operation.

Typical applications include:

• High-performance conveyors
• Hoisting equipment
• Extrusion
• Process machinery
• Material handling
• Large production machines
• High-performance rotating equipment

26. Why the 20BC170A0NNNANC0 Is Suitable for Heavy Industrial Equipment

The main reason this model is suitable for heavy industrial machinery is its combination of high current capacity and flexible motor-control functionality.

A 170 A continuous output rating provides considerable electrical capacity for large three-phase motors.

At the same time, vector-based control allows the motor to be controlled more precisely than with a simple fixed-frequency starter.

This combination is useful for machines that have:

• High starting torque
• Large mechanical inertia
• Variable production speed
• Frequent speed changes
• Controlled acceleration requirements
• Controlled stopping requirements
• Changing mechanical loads
• Long operating periods

27. Typical Industrial System Architecture

A typical installation can consist of the following components:

System component	Function
Incoming 3-phase power	Supplies electrical power to the drive
Circuit protection	Protects the drive and upstream electrical system
AC drive	Converts fixed-frequency AC power into controlled variable-frequency output
Motor	Converts electrical energy into mechanical energy
PLC	Provides machine-level control
HMI	Provides operator interface
Sensors	Provide process or machine feedback
Control wiring	Provides hardwired commands and status
Communication network	Transfers control and diagnostic data when configured
Mechanical load	Conveyor, pump, fan, mixer, compressor, etc.

This arrangement allows the drive to function as the motor-control section of a larger automated production system.

28. Important Parameters to Record Before Replacement

If the existing machine is operating correctly and the drive is being replaced, it is useful to record all important configuration values before removing the original drive.

The following information should be preserved:

Parameter group	Information to record
Motor	Voltage, current, frequency, speed, power
Acceleration	Acceleration time and profile
Deceleration	Deceleration time and profile
Speed	Minimum and maximum speed
Analog input	Scaling and signal type
Analog output	Scaling and signal type
Digital inputs	Function assigned to each input
Digital outputs	Function assigned to each output
Faults	Existing fault history
Current limits	Configured current limits
Motor protection	Thermal and overload settings
Communication	Network and addressing configuration
Feedback	Encoder/feedback configuration if used
Braking	Braking method and stopping behavior
Control mode	V/Hz, vector or other configured mode
Start source	Keypad, terminal, PLC or network
Speed reference	Analog, preset speed, network or other source

29. Advantages Compared with Direct-On-Line Starting

A conventional direct-on-line starter essentially connects the motor directly to the fixed-frequency electrical supply.

The 20BC170A0NNNANC0 provides considerably more control.

Characteristic	Direct-on-line starter	20BC170A0NNNANC0
Variable speed	No	Yes
Controlled acceleration	Limited	Yes
Controlled deceleration	Limited	Yes
Motor torque control	Limited	Advanced
Speed reference	Fixed	Adjustable
Starting current management	Limited	Controlled
Process speed adjustment	No	Yes
Motor diagnostics	Limited	Extensive
Programmable operation	Limited	Yes
PLC integration	External control required	Supported through control architecture
Energy optimization	Limited	Possible through speed control

The principal advantage is therefore not simply motor starting. It is the ability to make motor operation part of the machine’s overall control strategy.

30. Application Selection Table

Application	Suitability	Main reason
Large conveyor	Excellent	High current and controlled acceleration
Industrial pump	Excellent	Adjustable speed and process control
Large fan	Excellent	Variable airflow and speed control
Mixer	Excellent	Adjustable speed and torque
Compressor	Good	Controlled speed and starting
Material handling	Excellent	Speed and acceleration control
Process machinery	Excellent	Flexible motor control
Machine tool	Good	Variable-speed operation
Small conveyor	Excessive capacity	Smaller drive may be more economical
Small fan	Excessive capacity	Compact drive would normally be preferable

31. Overall Product Advantages

The 20BC170A0NNNANC0 combines high electrical capacity with the control flexibility required by demanding industrial machinery.

Its 170 A continuous-current capability makes it appropriate for large motors.

Its 400 V-class three-phase configuration fits common European and international industrial power systems.

Its vector-control capability provides better dynamic motor behavior than basic fixed-frequency control.

Its analog and digital I/O allow it to operate with hardwired machine-control systems.

Its industrial enclosure arrangement allows it to be integrated into a properly designed control cabinet.

Its PowerFlex 700 architecture also provides a familiar control platform for existing industrial installations.

32. Points That Should Be Considered Before Purchase

Because the 20BC170A0NNNANC0 is a high-power legacy drive, users should consider several factors before purchasing it for a new project.

First, the exact voltage must be confirmed.

Second, the motor full-load current must be compared with the drive’s 170 A rating.

Third, the application should be classified as normal duty or heavy duty.

Fourth, the braking requirements must be evaluated because the catalog configuration does not contain an internal brake IGBT.

Fifth, encoder feedback requirements should be checked.

Sixth, the required communication protocol should be determined.

Seventh, cabinet ventilation must be sufficient.

Eighth, the physical dimensions and mounting holes should be verified.

Ninth, the replacement strategy should consider long-term availability and maintenance requirements.

Tenth, if the application is a new machine rather than an existing installation, a newer-generation high-performance drive should also be evaluated.

33. Recommended Model Selection by Application

Requirement	Recommended model direction
Existing 400 V / 170 A PowerFlex 700 installation	20BC170A0NNNANC0 or equivalent 20BC170 configuration
Same current rating with different option configuration	20BC170A0NNNANN0
Same 170 A PowerFlex 700 platform	20BC170A0ANNANC0
Similar 170 A PowerFlex 700 configuration	20BC170A0ANNANA0
480 V-class high-power system	20BD170-class PowerFlex 700
New compact low-power machine	25B-D017N104
Small general-purpose motor	25B-D010N104
Compact industrial motor control	22B-D017N104
High-power modernization	20F11ND077JA0NNNNN
Advanced high-performance modernization	20G11ND077JA0NNNNN

34. Final Technical Summary

Specification category	20BC170A0NNNANC0
Brand	Allen-Bradley
Product family	PowerFlex 700
Series	20B
Catalog number	20BC170A0NNNANC0
Drive type	AC Variable Frequency Drive
Input	3-phase AC
Input voltage	400 V AC class
Input frequency	50 Hz nominal
Output	3-phase variable-frequency AC
Continuous output current	170 A
Normal-duty rating	Approximately 90 kW
Heavy-duty rating	Approximately 75 kW
Frame	Frame 6
Control	Vector-oriented motor control
Digital inputs	6
Digital outputs	3
Analog inputs	2
Analog outputs	2
Feedback	No feedback option in basic configuration
Brake IGBT	No
Internal brake resistor	No
Communication module	No internal communication module in basic configuration
EMC configuration	EMC filter / common-mode choke
Enclosure	IP20
Cooling	Forced air
Operating temperature	Up to approximately 50°C under specified conditions
Altitude	Approximately 1,000 m without derating
Approximate dimensions	≈700 × 350 × 350 mm
Approximate weight	≈45 kg
Typical applications	Conveyors, pumps, fans, mixers, compressors, process machinery
Main advantage	High-power industrial motor control with flexible speed and torque regulation

35. Conclusion

The 20BC170A0NNNANC0 is a high-capacity industrial AC drive designed around the PowerFlex 700 20B architecture.

Its key specification is the 170 A continuous output-current rating, combined with a 400 V-class three-phase input and approximately 90 kW normal-duty / 75 kW heavy-duty capability.

The model is particularly well suited to large conveyors, pumps, fans, mixers, compressors, material-handling systems, and other industrial machines requiring controlled motor speed and torque.

Its vector-control capability, programmable acceleration and deceleration, industrial I/O, motor-protection functions, and high current capacity make it a strong solution for demanding motor-control applications.

For an existing installation, the most important consideration is maintaining electrical, mechanical, functional, and control compatibility. A model with the same current rating is not automatically a direct replacement because catalog suffixes can represent differences in braking, feedback, communication, filtering, control, and other options.

For modernization, the 20B family provides the closest conceptual match, while newer high-performance drive families are worth considering when long-term availability, advanced networking, diagnostics, and modern control functions are important.

The most important selection parameters for this model are therefore 400 V-class input voltage, 170 A output current, 90 kW normal-duty rating, 75 kW heavy-duty rating, Frame 6 construction, IP20 enclosure, vector control, braking requirements, feedback requirements, communication requirements, cabinet dimensions, thermal conditions, and approximately 45 kg equipment weight.

When used within its electrical and thermal limits and installed in an appropriately designed industrial control cabinet, the 20BC170A0NNNANC0 provides a powerful and flexible solution for large three-phase AC motor applications.