Is it possible to modify the neutral position in Masterpact ACB from left hand side to right hand side.

It is very difficult to modify the neutral position in existing Masterpact ACB from Left side to Right side because the internal wiring of ACB is different for Left side Neutral and Right side Neutral.  It requires dismantling the complete ACB for such modification. This will also lead to the misbehavior of the Micrologic trip unit in ACB like nuisance tripping, incorrect measurement etc. So, it is not possible to modify the Neutral from Left side to Right side in an existing ACB at site.