Since, the Integral 18 & 32 are discontinued now,the nearest correct substitute is Tesys U DOL motor starter. Please note
that Tesys U is a customized product & one has to order following references as per the requirement
1) Power Base
2) Control Unit
3) Function modules/Communication modules/Auxillary contact modules
4) Auxillary contacts
5) Reverser block
6) Plug-in terminal blocks
7) Control circuit pre-wiring system
Cross reference guide for your reference is attached below