Nortel Meridian QSP44A Power Control Shelf 60V DC

Nortel Meridian QSP44A Power Control Shelf 60V DC

The Nortel Meridian QSP44A is a power control shelf module designed to distribute and manage 60V DC power within Meridian telephone PBX (Private Branch Exchange) systems. This component serves as a critical part of the power distribution infrastructure in mid-range and larger Meridian installations, regulating voltage delivery to system cards and peripherals.

Specifications & What's Included

• Model: QSP44A
• Manufacturer: Nortel (Northern Telecom)
• Function: Power Control Shelf
• Voltage: 60V DC
• Application: Meridian telephone PBX systems
• Form Factor: Shelf/chassis module
• Condition: Used, pulled from working environment

Applications

The QSP44A power control shelf was used in Meridian telephone systems deployed in business environments throughout the 1980s and 1990s. Meridian PBX systems were standard telephone infrastructure in medium to large corporate installations, and the QSP44A managed critical 60V DC power distribution to keep the system operational. These shelves were essential for system reliability, providing regulated power to line cards, trunk cards, and peripheral controllers. While Meridian systems are now largely superseded by IP-based telephone platforms, organizations maintaining legacy Meridian installations for continuity or specialized applications still require replacement or spare power control modules.