Introduction

The Allen Bradley 20F11NB028JA0NNNNN PowerFlex 753 AC Drive is designed for industrial variable-speed motor applications where reliable drive control and integration into an automation system are required. The PowerFlex 753 family provides a flexible platform for controlling AC motors across a wide range of industrial machinery and processes.

With a 28 A output rating, this model occupies a higher-current position than many smaller PowerFlex 753 configurations. Correct drive selection should always be based on the motor's actual nameplate current and the application's duty requirements rather than horsepower alone. Heavy starting loads, frequent acceleration, rapid deceleration, and regenerative operation can significantly affect drive sizing.

The JA configuration identifier is associated with a later PowerFlex 753 configuration generation. For replacement projects, users should compare the complete catalog number and installed options to ensure that the replacement drive provides the required electrical and control functionality.

The compact dimensions of 454 × 190 × 212 mm and 11.8 kg weight should also be considered when replacing an existing drive inside an electrical enclosure. Cabinet ventilation, wiring space, grounding, incoming power protection, motor cable routing, and maintenance clearance should all be evaluated during installation.

Technical Specifications

Specification	Details
Manufacturer	Allen Bradley
Product Family	PowerFlex 753
Catalog Number	20F11NB028JA0NNNNN
Product Type	AC Drive / Variable Frequency Drive
Voltage Class	480 VAC
Input Phase	Three Phase
Output Current	28 A
Drive Platform	PowerFlex 753
Cooling	Air Cooled
Dynamic Braking	Internal DB Transistor
DC Terminals	Available
Configuration	JA
Dimensions	454 × 190 × 212 mm
Weight	11.8 kg / 26.01 lb

For installation planning, the stated dimensions should be treated as the physical drive dimensions provided for this model. Additional cabinet clearance should be allowed for power and control wiring, airflow, heat dissipation, inspection, and service access.

Recommended Related Models

The following PowerFlex 753 models can be considered when comparing current ratings and application requirements:

Allen Bradley 20F11NB027JA0NNNNN – PowerFlex 753 AC Drive, nearby current rating
Allen Bradley 20F11NB032JA0NNNNN – PowerFlex 753 AC Drive, higher-current configuration
Allen Bradley 20F11NB041JA0NNNNN – PowerFlex 753 AC Drive, higher-power application
Allen Bradley 20F11NB052JA0NNNNN – PowerFlex 753 AC Drive, higher-current configuration
Allen Bradley 20F11NC028JA0NNNNN – PowerFlex 753 configuration for comparison of related option combinations

When selecting a replacement, the complete catalog number should be matched against the original installation because seemingly similar PowerFlex 753 models may have different option configurations.

Popular Related Models

20F11NB028JA0NNNNN – PowerFlex 753 AC Drive, 28 A
20F11NB027JA0NNNNN – PowerFlex 753 AC Drive
20F11NB032JA0NNNNN – PowerFlex 753 AC Drive
20F11NB041JA0NNNNN – PowerFlex 753 AC Drive
20F11NB052JA0NNNNN – PowerFlex 753 AC Drive
20F11GE027JA0NNNNN – PowerFlex 753 AC Drive, 600 VAC class
20F11GE032JA0NNNNN – PowerFlex 753 AC Drive, 600 VAC class
20F11GE041JA0NNNNN – PowerFlex 753 AC Drive, 600 VAC class
20F11GE052JA0NNNNN – PowerFlex 753 AC Drive, 600 VAC class

The Allen Bradley 20F11NB028JA0NNNNN PowerFlex 753 AC Drive is a suitable catalog reference for industrial motor-control systems requiring a 480 VAC-class PowerFlex 753 drive with a 28 A output rating and dynamic braking capability.

Applications

The 20F11NB028JA0NNNNN can be applied to a variety of industrial motor-control systems, including:

Conveyor Systems – Provides adjustable motor speed and controlled acceleration for material-handling equipment.
Pumps and Fans – Supports variable-speed operation for process pumps, cooling systems, and industrial ventilation.
Packaging Machinery – Suitable for machines requiring repeatable motor acceleration, deceleration, and speed control.
Material Handling – Can be used in conveyors, feeders, lifting-related machinery, and other automated handling equipment.
Machine Tools – Provides variable-frequency motor control for appropriately rated industrial machinery.
Process Equipment – Useful where motor speed needs to be coordinated with a PLC or other automation controller.
Industrial Production Lines – Supports motor control within larger Allen Bradley automation architectures.
OEM Equipment – Suitable for machine builders requiring a configurable PowerFlex drive platform.

Advantages

28 A Output Capability
The 20F11NB028JA0NNNNN provides a 28 A output rating, allowing it to control appropriately sized industrial motors within its specified duty and application limits.

PowerFlex 753 Architecture
The PowerFlex 753 platform is designed for industrial automation applications requiring configurable motor control and integration with control systems.

480 VAC-Class Operation
This model is intended for three-phase industrial power systems in the 480 VAC class, making it suitable for common North American industrial electrical environments.

Integrated Drive Functions
The drive provides functions for motor speed control, acceleration/deceleration management, protection, and monitoring, reducing the need for separate motor-control equipment.

Dynamic Braking Capability
The configuration includes a dynamic braking transistor, allowing a suitable external braking resistor to be used when the application requires controlled dissipation of regenerative energy.

Compact Installation Footprint
With dimensions of 454 × 190 × 212 mm, the drive can be integrated into appropriately sized industrial control cabinets.

Flexible Automation Integration
The PowerFlex 753 family can be incorporated into broader Allen Bradley control architectures, making it useful for applications involving PLC-based machine and process automation.

Technical FAQs

1. What is the Allen Bradley 20F11NB028JA0NNNNN?
It is a PowerFlex 753 AC Drive designed for industrial variable-frequency motor control applications.

2. What is the output current rating of the 20F11NB028JA0NNNNN?
The model has a 28 A output rating. The exact motor horsepower selection should be based on the motor nameplate current, duty cycle, overload requirements, and applicable PowerFlex rating tables.

3. What voltage class does this PowerFlex 753 drive use?
The 20F11NB028JA0NNNNN belongs to the 480 VAC-class, three-phase PowerFlex 753 drive range.

4. Is the 20F11NB028JA0NNNNN suitable for three-phase motors?
Yes. It is intended for controlling appropriately rated three-phase AC motors in industrial applications.

5. Does the 20F11NB028JA0NNNNN support dynamic braking?
Yes. This configuration includes a dynamic braking transistor. An appropriately selected external braking resistor is required when dynamic braking is used.

6. What type of applications are suitable for this drive?
Typical applications include conveyors, pumps, fans, material-handling equipment, packaging machinery, production machinery, and other industrial systems requiring variable-speed AC motor control.

7. Can the 20F11NB028JA0NNNNN be integrated into an Allen Bradley automation system?
Yes. The PowerFlex 753 platform is designed for integration with industrial automation architectures and can be configured for applications involving Allen Bradley controllers and associated drive-control equipment.

8. What should be checked before replacing another PowerFlex 753 drive with this model?
Engineers should compare the input voltage, motor nameplate current, normal- and heavy-duty requirements, enclosure and environmental requirements, control options, I/O configuration, braking requirements, communications, and physical mounting dimensions before replacement.

9. What is the difference between the 20F11NB028JA0NNNNN and other PowerFlex 753 models?
The primary differences between PowerFlex 753 catalog numbers can include voltage class, current rating, enclosure configuration, filtering, braking options, I/O configuration, and other factory-selected options. The complete catalog number should therefore be checked rather than selecting a replacement based only on horsepower.

10. What are the dimensions and weight of the 20F11NB028JA0NNNNN?
The dimensions are 454 × 190 × 212 mm, and the weight is 11.8 kg (26.01 lb).

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