I think I'm looking in the wrong place, because I'm having a lot of trouble finding the right parts.

Where is my mistake?

I am looking for example RPC-2E-UNI - Zeitrelais, 2 Kontakte, Ansprechverzögert, 8A, 12 ... 230V AC/DC, 8 Zeitbereiche

It has the clamps. A1, A2 und 25, 26, 28 und 15, 16, 18
I can't find a wiring diagram that will help me.
The one I found has no contacts to connect :-( but is just a picture.

If I have to go to such lengths for all the parts I need and create all the parts first, then this is going to be a lengthy project for me.

Is there another database to search for parts?

What I am looking for and need:
1 x 240V AC eingang
1 x Arli 4P16A-G => Hersteller Seite
1 x Fi schutzschalter 16A 30Ma 2 Polig => Beispiel
4 x Zeitrelais RPC-2E-UNI => Beispiel
60 x Stück Reihenklemmen Hutschiene => Beispiel
4 x 240V AC zu 72V DC Netzteil => Beispiel
1 x 240V AC zu 48V DC Netzteil
1 x 240V AC zu 24V DC Netzteil
1 x 240V AC zu 5V DC Netzteil
1 x Mesanet 7I95 Ethernet interfaced Step/dir +encoder + I/O => Hersteller Seite
4 x Step/dir Treiber SK8060 => Beispiel
1 x Step/dir Treiber SK5045
5 x Sensing NPN (Home Sensor) TL-W5MC2 => Beispiel
6 x Micro Limit schalter (Notaus Taster) => Beispiel
3 x Schrittmotor Nema 23
1 x Schrittmotor Nema 23 mit Gedribe
1 x Schrittmotor (Rundtischlager)