Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.87 (15)
  • Click a star to rate this product
    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.87 (15)
  • Click a star to rate this product
The 0-52821 is a RPOA board from Reliance



Sell Surplus: Have a 0-52821 to sell? Sell Now
Exchange Credit: Learn more about our exchange credit program
  • Part Number: 0-52821
  • SKU: 052821RE
  • Manufacturer: Reliance Electric
  • Series: Drive Boards

0-52821 Technical Specifications

Original Manufacturer Reliance Electric
Functional Part Number 0-52821
Functional Description RPOA Circuit Card
Device Status Now-Obsolete Legacy

About the 0-52821

0-52821 RPOA

The 0-52821 board is a Reliance module component manufactured for use within various drive systems manufactured by that company and other compatible drives.  The 0-52821 is a single board component with an attached faceplate. Typically, this is marked with the Reliance logo; however, in some cases, it may be marked as being manufactured by ABB or by Baldor-Reliance.

The faceplate attached to the 0-52821 has two red LED indicators inserted into its top third.  These are labeled “power” and “data valid.” The bottom right edge is populated by a six-screw terminal strip that is then covered by its own removable cover held on by two screws.  The screw connections on this component are individually labeled as 189, 188 (both labeled 115 VAC,) 56+, 57- (both labeled Aux Pwr,) 4-, 3+ (both labeled Serial Data Input.) The faceplate also includes two set screws to lock the circuit board into a rack system.  These are placed at the top and bottom of the faceplate.

The board portion of the 0-52821 connects to the faceplate using screw connections.  It is populated by a TR-12174 411027-5-R transformer that connects to the board using various colored wire connections.  It has several transistors, twelve integrated circuits, diodes, resistors, and capacitors. Capacitors include disk capacitors.  The board also has two lines of MOVS (metal oxide varistors) located toward the board’s back edge. There are eight resistor network arrays on the board, along with several pin connections.  The board’s surface is printed in a grid pattern. More information about how this board operates or detailed installation instructions may be found through technical support publications from Reliance Electric like manuals and user guides.  

Reviews For 0-52821

Internal Review

As discussed in greater detail above, this 0-52821 printed circuit board product offering was originally-designed and produced by Reliance Electric for placement in a now-obsolete legacy product series, although its true functional role is unknown. This 0-52821 PCB should still be well voltage-protected for any Reliance Electric automated drive placement; boasting several capacitors and integrated circuits. - AX Control Lead Technician

  • O-52821

Repair Services For 0-52821

Type Lead Time Price Action
Repair Service 1-2 weeks $312

Our highly skilled technicians can repair your 0-52821. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More