Nortel / Meridian

Nortel Meridian QPC691A 5/12V Power Converter Module PBX Shelf Card NT C08921A0

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SKU:
12208
MPN:
QPC691A
Condition:
Used
Availability:
Usually ships within 1-2 business days.
Weight:
5.00 LBS
Shipping:
Calculated at Checkout
  • Nortel Meridian QPC691A 5/12V Power Converter Module — top-side PCB view showing large aluminum heatsink fins, power transistors, and blue electrolytic capacitors
  • Nortel QPC691A module label closeup — showing model number QPC691A, barcode, and '5/12 CONV 2' designation printed on the card edge bracket
  • Nortel Meridian QPC691A power converter — bottom/back side view showing green PCB, black metal shielded top cover, and card edge connector with LED indicators on front bracket
  • Nortel QPC691A 5/12 CONV 2 power converter — front panel view showing card bracket with 'QPC691A-A' designation, three green LED status indicators (+12V, -12V, +5V, GND labels), and 'RS' port
  • Nortel Meridian QPC691A — top-down angled view of board showing transformer, heatsink with copper thermal pad, and dual card edge connectors labeled NT C08921A0 21X88
  • Nortel QPC691A power converter — front bracket detail showing 'QPC691A-A 5/12 CONV 2' label and caution warning: power to be off before removing or inserting this pack
  • Nortel Meridian QPC691A — front panel close-up showing LED indicators labeled +12V, -12V, +5V, GND and RS connector on right side of beige bracket
  • Nortel QPC691A 5/12V Power Converter — side-angle top view showing full PCB with heatsink assembly, TO-3 power transistors, large electrolytic capacitors, and transformer
  • Nortel QPC691A PCB detail — close-up of power transistor section showing QHP202A4 transistors dated 8818K, small electrolytic and ceramic capacitors, and trim potentiometer
  • Nortel Meridian QPC691A — angled top view showing dual NT C08921A0 21X88 card edge connectors, transformer, heatsink copper thermal pad, and board component layout
  • Nortel / Meridian 5/12V PWR Converter QPC691A
$30.00
Was: $60.00
Current Stock: 1

Sold Out

Description

Nortel Meridian QPC691A 5/12V Power Converter Module PBX Shelf Card NT C08921A0

Power converter module designed for Nortel Meridian 1 PBX systems. This shelf card generates multiple voltage outputs for internal power distribution across the telecom switching platform.

Specifications & What's Included

  • Model: QPC691A (NT C08921A0)
  • Output Voltages: +12V, -12V, +5V, GND
  • Form Factor: Card/Plug-In Module
  • Interface: Backplane/Card Edge Connector
  • Output Transistors: QHP202A4 (dated 8818K)
  • Manufactured: Canada
  • Card only; no accessories included

Applications

The QPC691A converter module was used in Nortel Meridian 1 PBX systems to regulate and distribute multiple DC voltage rails to various shelf cards and components. This type of power module sits on the main backplane and converts input power to the standardized voltages required by switching fabric, processor, and interface cards. Typical installations included medium to large enterprise telephone switch systems from the 1980s through early 2000s.

Condition: Used
This Nortel Meridian QPC691A 5/12V Power Converter Module has been inspected and appears to be in good used condition. It was pulled from a working PBX environment where it was in active use. The PCB, heatsink, and card-edge connectors look clean with no signs of damage or burn marks. The front bracket LEDs and RS connector are intact. Normal light handling wear is visible on the bracket and card edges. Please view our photo set and contact us if you have any questions.
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Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information

Brand:
Nortel
Model:
QPC691A
MPN:
QPC691A
Secondary Model:
NT C08921A0
Type:
Power Converter Module / PBX Shelf Card
SKU:
12208
Output Voltages:
+12V, -12V, +5V, GND
Module Designation:
5/12 CONV 2
Compatible With:
Nortel Meridian 1 PBX Systems
Form Factor:
Card / Plug-In Module
Condition:
Used – Pulled from Working Environment
Seller Notes:
Card only; no additional accessories included
Country/Region of Manufacture:
Canada
Interface Type:
Backplane / Card Edge Connector
Application:
PBX Power Distribution, Telecom Shelf Power
PCB Markings:
NT C08921A0 21X88 (visible on PCB silkscreen)
Output Transistors:
QHP202A4 (visible on power transistors, dated 8818K)
Condition Notes:
Nortel Meridian QPC691A 5/12V Power Converter pulled from a working PBX environment. Inspected and in good used condition. PCB, heatsink, and connectors are clean with no damage observed. Please contact us with any questions.
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