Do current limiting MCBs differ from Type B, Type C MCBs?
Makers data is needed to see the I2t trends beyond the minimum called out by EN610009
Do you mean EN60898 (Or possibly 60947-2)? 
Can't see the one you quoted, could be 61009 RCBOs or 61000 series for EMC, did find a range of RCBOs in Aus here 3 Pole 20A RCBO 10KA 30MA C Curve TYPE A (Busbar Type with Neutral Pigtail) - LSTO20C/003A (agmelectrical.com.au) but i think they added a 0 by mistake
Makers data is needed to see the I2t trends beyond the minimum called out by EN610009
Do you mean EN60898 (Or possibly 60947-2)?
Can't see the one you quoted, could be 61009 RCBOs or 61000 series for EMC, did find a range of RCBOs in Aus here 3 Pole 20A RCBO 10KA 30MA C Curve TYPE A (Busbar Type with Neutral Pigtail) - LSTO20C/003A (agmelectrical.com.au) but i think they added a 0 by mistake