In Stock
PC Relay Board | Image
3 year warranty

PC Relay Board | Image
PC Relay Board | Image


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  • 4.86 (14)
  • Click a star to rate this product
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  • 4.86 (14)
  • Click a star to rate this product
This 0-51839-8 PC Relay Board was manufactured by Reliance Electric.



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  • Part Number: 0-51839-8
  • SKU: 0518398RE
  • Manufacturer: Reliance Electric
  • Series: Drive Boards

Product Description

0-51839-8 Relay Card

The 0-51839-8 is a board component fabricated by Reliance Electric.   Reliance was bought out by Baldor Electric Co in 2006, and this group was purchased by ABB Group in the later 2000s; your board may be marked as coming from any of these companies.   The board number will remain constant.

The 0-51839-8 functions as a Relay Card.   It is designed with a front faceplate and a conductive backplane.  The faceplate is connected with three screws to the PCB and makes it easier for technicians to insert and remove the board from rack systems.  The faceplate has seven light indicators located under a “Relay On” notation.

The 0-51839-8 circuit board is populated by seven relays.  These are placed on the board in a V formation. Each relay is paired with a disk capacitor that is located close to one side of each relay.   The board also has two lines of carbon composite resistors, fourteen in all. Surface wiring connects components located in the front panel to the surface of the board.   The PCB has the board number and the Reliance logo. It also has a grid pattern on its surface that is marked off on one plane by numbers (5 through 80 by fives,) and on another plane by letters A through BD.)   More information about the board and its operation can be accessed through Reliance publications like manuals, data sheets, or user guides.

AX Control has a variety of programs to help save you money.  Click on any of the links located on this page to find out more about our warranty, exchange,  or surplus purchase. Our team can also answer any questions you may have about these programs.

Frequently Asked Questions about 0-51839-8

How is voltage protection handled in the assembly of this 0-51839-8 product offering?

This 0-51839-8 device's voltage limitation is produced through its internal assembly's inclusion of Reliance Electric-standardized hardware components such as capacitors, diodes, and resistors.

Is this 0-51839-8 product offering still in production today?

No. Given this 0-51839-8 printed circuit board's placement in a now-obsolete legacy product series, it should come as no surprise that it has been discontinued for manufacture in the years following its initial release.

Reviews For 0-51839-8

Internal Review

It is something of a surprise that this 0-51839-8 printed circuit board product offering from the now-discontinued legacy series manufacturer Reliance Electric is not considered to exist as a modular assembly; given the fact that it makes use of both a front faceplate and a conductive backplane. This 0-51839-8 PCB is functionally-named simply as a Relay Board, and is available for both repair and replacement. - AX Control Lead Technician

  • O-51839-8

Repair Services For 0-51839-8

Type Lead Time Price Action
Repair Service 1-2 weeks $351

Our highly skilled technicians can repair your 0-51839-8. 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