Looking for a replacement Switch Actuator.

[QuantumCat]

Hello everyone,

I'm looking for a replacement switch 
The old one is (I believe) a Telemecanique.

It's green, transparant (for and LED), turning switch.

Now under Schneider Electric's Harmony XB4 series.
Unfortunately, I do not fully understand the descriptions.
It's a switch which I believe is NC, three positions?
In the left (start) position (fixed) it activates the NC contact,

In the "middle" unlocks it from the left position with an audible click (disengages the NC contact and does not engage the NC).

Stays in this position

A turn to the right it activates the NO contact on and returns to the middle position when released.

Is this a two position switch or a three position switch?

I have the following numbers:

Switch: L0524

Body/Fixing Collar: L0101 (I think)

Can anybody direct me to the the new / equivalent from the Harmony AB4 range?