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2.5-Year Warranty · Free Shipping · Same-Day Shipping 980-202-0882 · Charlotte, NC

Allen-Bradley 20BD-DB1-1 Kit, Dynamic Brake Resistor,115 Ohm,Internal Mount,400 480V

Manufacturer: Allen-Bradley
MPN: 20BD-DB1-1
UPC/GTIN: 662453975672

$449.99

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Allen-Bradley 20BD-DB1-1 — The Allen-Bradley 20BD-DB1-1 is a Bulletin 20BD dynamic brake chopper / resistor assembly for PowerFlex 750-Series drives: Kit, Dynamic Brake Resistor,115 Ohm,Internal Mount,400 480V AC Input, Frame 1. Dynamic braking is used on high-inertia or overhauling loads where the motor regenerates kinetic energy to the drive’s DC bus during deceleration. Without a dynamic brake, the drive faults on DC Bus Overvoltage. The 20BD chopper switches a resistor across the DC bus to dissipate regenerated energy as heat, keeping the DC bus within safe voltage limits.

Product Family Bulletin 20BD PowerFlex 750-Series Dynamic Brake
Purpose Dissipates regenerative energy from drive DC bus as heat during deceleration
Compatible Drives PowerFlex 753 (20F) / 755 (20G) / 755 with Options (21G)
Selection Reference Match by drive frame + duty cycle per 750-TD002 Dynamic Brake Selection
Installation External to drive; wired to drive DC+ / DC- bus terminals
Typical Applications Centrifuges, overhauling cranes, spindle drives, rapid-stop conveyors
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PLC Exchange is not an authorized distributor: Original Packaging is synonymous with Used Surplus. See Original Packaging or Warranty for more information.

SKU: 20BD-DB1-1 Category:

Description

Allen-Bradley 20BD-DB1-1

The Allen-Bradley 20BD-DB1-1 is a Bulletin 20BD dynamic brake chopper / resistor assembly for PowerFlex 750-Series drives: Kit, Dynamic Brake Resistor,115 Ohm,Internal Mount,400 480V AC Input, Frame 1. Dynamic braking is used on high-inertia or overhauling loads where the motor regenerates kinetic energy to the drive’s DC bus during deceleration. Without a dynamic brake, the drive faults on DC Bus Overvoltage. The 20BD chopper switches a resistor across the DC bus to dissipate regenerated energy as heat, keeping the DC bus within safe voltage limits.

Dynamic Brake Overview
Catalog Number 20BD-DB1-1
Product Family Bulletin 20BD PowerFlex 750-Series Dynamic Brake
Function DC-bus chopper + resistor assembly
Purpose Dissipates regenerated energy; protects DC bus capacitors
When to Use
High-Inertia Loads Flywheels, centrifuges, large rotating masses
Overhauling Loads Downhill conveyors, crane lowering, load-driven deceleration
Rapid Stop Applications requiring faster-than-coast deceleration
Without DB Drive faults on DC Bus Overvoltage during deceleration
Installation & Sizing
Mounting External to drive, adjacent panel or separate NEMA enclosure
Wiring DC+ and DC- bus terminals on drive
Heat Dissipation Resistor dissipates regenerated energy as heat; panel ventilation required
Sizing Reference Rockwell Automation publication 750-TD002 Dynamic Brake Selection
Source: Rockwell Automation Publication 750-TD001P-EN-P, July 2025 — PowerFlex 750-Series AC Drives Technical Data; drive configuration attributes parsed from Rockwell Automation manufacturer product description.

PLC Exchange Original Packaging is synonymous with Used Surplus. Because we are not an authorized distributor, we are not legally allowed to claim these items as “New”, “Factory Sealed”, or any other term that may imply such. We have over 10 years of experience working with trusted suppliers to make sure you receive the top-quality hardware you need. Used Surplus items ship in their original packaging, with the same function and contents as OEM-supplied materials. PLC Exchange is an independent supplier of industrial automation products and is not affiliated with the brand manufacturer or any of its authorized distributors. All warranties are provided directly by PLC Exchange. Trademarks, logos, and brand names referenced are property of their respective owners and are used for descriptive identification only.

Technical Notes for 20BD-DB1-1

  • Refer to the manufacturer's installation instructions for proper mounting, wiring, and configuration.
  • Ensure compatibility with your existing system architecture before ordering.
  • All 20BD-DB1-1 units sold by PLC Exchange are tested and ship in original factory packaging.
  • For application-specific questions or system compatibility verification, contact PLC Exchange technical support at [email protected] or 980-202-0882.

Reference Documents

Alternative Part Numbers & Names for 20BD-DB1-1

The 20BD-DB1-1 by Allen-Bradley may also be found under the following alternative names, catalog numbers, or common search variations:

  • 20BDDB11
  • Allen Bradley 20BD-DB1-1
  • Allen-Bradley 20BD-DB1-1
  • 20BD DB1 1

All variations refer to the same Allen-Bradley product. If you are unsure whether this is the correct part for your application, contact our team for assistance.

Additional information

Weight 0.5 lbs
Dimensions 12 × 10 × 6 in
warranty

2.5 Year PLC Exchange Warranty, 30 Days worry-free return from delivery

upc

662453975672

mpn

20BD-DB1-1

manufacturer

Allen-Bradley

condition

Original Packaging

Dimensions & Weight for 20BD-DB1-1

Shipping Dimensions
Weight0.5 lbs
Length12 in
Width10 in
Height6 in
Box Dimensions (L×W×H)12 × 10 × 6 in

Dimensions shown are for the shipping package. For module-level mechanical dimensions, refer to the manufacturer datasheet.

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Frequently Asked Questions

Where can I find the technical datasheet for the 20BD-DB1-1?

The official manufacturer datasheet is available for download on the 20BD-DB1-1 product page at PLC Exchange. Look for the Tech Data PDF link in the product description.

Does the 20BD-DB1-1 include a warranty?

Yes. Every 20BD-DB1-1 sold by PLC Exchange includes a 2.5-year warranty (30 months, full replacement). Details: https://plcexchange.net/warranty-information/

What is the return policy for the 20BD-DB1-1?

PLC Exchange offers a 30-day worry-free return policy. Eligibility and details: https://plcexchange.net/return-policy/

When will my 20BD-DB1-1 ship?

In-stock orders placed before 4 PM ET ship the same business day via free UPS Ground. Expedited options (Next Day Air, 2nd Day Air) are available at checkout.

Who manufactures the 20BD-DB1-1?

The 20BD-DB1-1 is manufactured by Allen-Bradley. PLC Exchange is an independent reseller specializing in Allen-Bradley industrial automation products.

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