Identifying Moeller MCBs types...

[fluffy2560]

I've got a bunch of Moeller MCBs for DIN rail mounting which I cannot identify the characteristics (not even searching web sites or Moeller's site). I am not sure even if the characteristics are relevant to a domestic installation so if anyone knows I'd be grateful for any info.

The two types of MCBs I have are as follows:

PLSM7-B16
PL7-B16/1

Obviously they are type B and 16A, but what difference does the PLSM7 or PL7 and /1 at the end mean?

 

[briwire]

the only other parameter I can think of with an MCB is the rated fault current, usually in kAmps.

 

[Spark123]

Different shape? Different age?