Introduction
The Allen-Bradley 20F11NB070JA0NNNNN PowerFlex 753 AC Drive is an industrial variable frequency drive designed to provide adjustable-speed control for three-phase motors. It combines a 70 A current rating with a 25 HP Normal Duty rating and 20 HP Heavy Duty rating, making it suitable for a broad range of industrial machinery.
The PowerFlex 753 platform is intended for applications where motor control flexibility, integration capability, and reliable operation are important. The 20F11NB070JA0NNNNN configuration includes embedded I/O, forced-air cooling, an AC input with precharge, filtering, a common-mode capacitor jumper, and an internal dynamic braking transistor.
One of the key characteristics of this model is its Frame 5 design. The frame configuration provides a defined mechanical platform for installation and cabinet planning. With dimensions of 550 × 212 × 270 mm, sufficient cabinet space and appropriate ventilation should be considered during installation.
The drive's 70 A current rating makes it suitable for larger motor loads than many compact variable frequency drives. Depending on the application and duty cycle, it can support motors up to 25 HP under Normal Duty conditions or 20 HP under Heavy Duty conditions.
Dynamic braking is another useful feature for machinery where the motor must decelerate efficiently. The integrated braking transistor allows a compatible external braking resistor arrangement to be implemented when required by the application. This can be particularly useful for equipment with frequent starts and stops or significant rotating inertia.
The 20F11NB070JA0NNNNN is also supplied without a standard HIM in this particular catalog configuration. This makes it suitable for installations where drive operation and parameter management are handled through a control architecture or where a separate operator interface is selected according to the machine requirements.
Before installation, engineers should verify the incoming voltage, motor nameplate information, current requirements, enclosure and environmental conditions, grounding arrangements, braking requirements, and control-system compatibility. Proper cabinet ventilation is particularly important because the drive uses forced-air cooling.
For replacement applications, the complete catalog number 20F11NB070JA0NNNNN should be checked rather than relying only on the PowerFlex 753 family name. Small differences in catalog-number suffixes can represent meaningful differences in input configuration, filtering, braking, operator interface, and other options.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley |
| Product Family | PowerFlex 753 |
| Catalog Number | 20F11NB070JA0NNNNN |
| Product Type | PowerFlex 753 AC Drive |
| Drive Type | Air-Cooled AC Drive |
| Input Voltage | 240 V AC |
| Input Phase | 3-Phase |
| Voltage Class | 200–240 V AC |
| Current Rating | 70 A |
| Normal Duty Rating | 25 HP |
| Heavy Duty Rating | 20 HP |
| Normal Duty Power | Approximately 18.6 kW |
| Heavy Duty Power | Approximately 14.9 kW |
| Frame Size | Frame 5 |
| Input Configuration | AC Input with Precharge |
| Cooling | Forced Air |
| Enclosure | IP20/IP00, NEMA/UL Open Type |
| I/O | Embedded I/O |
| Dynamic Braking | Internal DB Transistor |
| Filtering | Filtered |
| CM Configuration | CM Jumper Installed |
| HIM | Blank / No HIM |
| Dimensions | 550 × 212 × 270 mm |
| Weight | 20.40 kg (44.97 lb) |
Recommended Related Models
| Model | Product Type |
|---|---|
| Allen-Bradley 20F11NB052JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11NB060JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11NB070JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11NB085JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11NB099JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11ND040JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11ND052JA0NNNNN | PowerFlex 753 AC Drive |
When selecting a related PowerFlex 753 drive, the input voltage, current rating, duty rating, frame size, braking configuration, filtering, and control requirements should be checked carefully.
Popular Related Models
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| Allen-Bradley 20F11NB070JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11ND040JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11ND052JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11ND065JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11ND077JA0NNNNN | PowerFlex 753 AC Drive |
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| Allen-Bradley 20F11ND125JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11NB040JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11NB052JA0NNNNN | PowerFlex 753 AC Drive |
| Allen-Bradley 20F11NB060JA0NNNNN | PowerFlex 753 AC Drive |
