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Black rectangular AC adapter with 5.5mm 2.5mm barrel plug

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E-buy AC Adapter 48V 0.52A 5.5mm 2.5mm

SKU CH-H1P2-89NB4

Powers Nortel Avaya 11xx and 12xx IP phones with a 48V 0.52A output and a 5.5mm 2.5mm connector

  • Product typeAC Adapter
  • Powers Nortel Avaya 11xx and 12xx IP phones
  • Delivers 48V at 0.52A for correct voltage
  • Fits 5.5mm by 2.5mm barrel connector precisely
  • Replaces NTYS17BAE6 and FSP025-1AD207A part numbers
  • Brand-new condition ensures reliable operation from day one

AC Adapter for Nortel Avaya IP Phones

This 48V 0.52A AC adapter replaces the NTYS17BAE6 and FSP025-1AD207A power supplies for Nortel Avaya 11xx and 12xx IP phones. It delivers the required voltage and current through a 5.5mm by 2.5mm barrel connector. The unit is supplied new and matches the original equipment specifications.

Practical limits of the 48V barrel interface

The adapter provides a fixed 48V output at 0.52A, so it cannot power devices that need a different voltage or a higher current draw. Polarity and connector dimensions must match the phone's input exactly or the unit will not connect. No other output profiles or connector sizes are supported by this model.

Deciding specification — 48V 0.52A output

The single figure that determines compatibility is the 48V 0.52A rating; if the phone's label lists different values this adapter will not work. Buyers who need a different voltage or a higher amperage supply should look elsewhere.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 70% of the 27,790 comparable items (median $30.99).

Specifications

Product
Product typeAC Adapter

Questions about this item

Does this 48V 0.52A adapter work with both the 11xx and 12xx IP phone series?

Yes, it replaces the NTYS17BAE6 and FSP025-1AD207A units used across the 11xx and 12xx models.

What does the 48V 0.52A rating deliver to the phone in daily use?

It supplies up to 25 watts of regulated power, matching the original supply specification for stable operation.

Will the 5.5mm by 2.5mm barrel plug fit the power jack on my Avaya handset?

The 5.5mm outer and 2.5mm inner dimensions are the exact connector size specified for the compatible Nortel Avaya IP phones.

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