X127-99-2b is a specific model of a control transformer used within high-end industrial battery charging systems, most notably the Legacy Gold Series (LG1 and LG3 models).
It is most likely one of the following:
If you are troubleshooting a charger and find no power at the control board, use a multimeter to check the secondary output of the X127-99-2B transformer before replacing the more expensive main control board. X127-99-2b
: Manuals for equipment like the Legacy Titanium HF Charger list specific attachment kits (e.g., X225-99-0-2) that follow a nearly identical naming convention to your query. X127-99-2b is a specific model of a control