The LAD90909 is a mounting kit from the TeSys LE range, designed to physically secure a contact block within a TeSys contactor or starter assembly. It's the bracket or frame piece that holds the auxiliary contact block in place on the contactor, not the block itself.
What to expect on fit
As a mounting kit, this part has no electrical ratings — it's purely mechanical. It mates with the TeSys LE contactor frame and accepts the standard TeSys auxiliary contact block. If your panel has the contactor already, the kit snaps into the designated slot on the contactor body; no tools needed beyond a screwdriver for the terminal screws on the block itself.