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The 3500/15 127610-01 is the legacy AC power supply module for a 3500 rack. Its operating input range depends on the paired high- or low-voltage AC power input module. It converts the selected AC source into the internal supplies required by the rack modules.
127610-01 pairs with 125840-01 for high-voltage AC or 125840-02 for low-voltage AC. Confirm both hardware revisions before applying the datasheet voltage range.
The lower supply is primary and the upper is backup when two are installed. Continuity during removal of either unit requires another correctly installed supply and the documented service procedure.
A universal-AC conversion uses 106M1079-01 together with 106M1081-01. The manufacturer warns against interchanging individual legacy and universal front or input modules.
Verify the 127610-01 front label, the 125840-01 or 125840-02 rear PIM label and both revision markings. Provide photographs of the supply/PIM pair and the installed primary or backup position. Do not replace a legacy half with a universal-AC half based only on the 3500/15 family name.
Send quantity, full 3500/15 127610-01 identification, front and rear nameplate photographs, the existing PIM number and the rack power arrangement. State whether a like-for-like legacy spare or a matched universal-AC conversion is required, together with receiving country and requested delivery date.