Issue:
Should oxidation be cleaned from circuit breaker bus bar before attaching bus bar?

Product Line:
Circuit Breakers

Environment:
MCCB and ACB  like Powerpact R and Masterpact NT, NW, MTZ

Resolution:

Yes, the oxidation should be cleaned off before attaching bus bar.

Schneider Electric Services uses denatured alcohol and scotch-brite if needed, making sure not to go to hard on it so you don't remove the tin or silver plating.  However, they do not have this procedure or chemicals in any official document. But it seems to be proven.

Released for: Schneider Electric Canada