I may be wrong, but I think ITE Challenger may have been absorbed by Siemens. I wouldn’t recommend it but you could see if a new Siemens panel bus would match up. The neutral bars are probably in a different location in a new Siemens panel. If I were going to be responsible for it though, I would just replace the whole panel and not have to worry about it coming back on me later. That’s the real headache.
What caused that bus to roast in the first place? loose connection?
