Hello, the difference between AC contactor 0910 and 0901 is that the auxiliary contacts are not the same, 0910 is one normally open, 0901 is one normally closed.
0910's 1 means one normally open, 0 means 0 normally closed.
0 for 0901 means 0 normally open, 1 means 1 normally closed.
The current ratings are all 9A.