MCC Bucket stab assembly

[Designer69]

does anyone here know if Cutler-Hammer aftermarket MCC bucket stab / wire jumper ratings are the same for 15A to 150A breakers? these are for old ABB 9800 Unitrol MCC's that we are trying to retrofit.

Want to put bucket in spare cubicle into an empty space cubicle to allow mounting of 150A breaker.

However, spare cubicle currently has 50A breaker instead of 150A. Not sure if the bucket stab rating would differ from a 50A to 150A breaker.

thanks

 

[Jraef]

Typically is would, most mfrs have a cutoff point, maybe more than one, in that small frame size rating. For A-B for example, it's 60A, 100A and 150A. Only C-H can answer it though, especially on that after market line of replacement buckets. They get a little loosey-goosey on those things and on something like that ABB after market stuff where UL listing is impossible because the OEM no longer exists (it was originally Westinghouse, but a part of it that Eaton didn't buy), they sometimes allow outside vendors to assemble them under license, so who knows what went into it.