Meter cabinet with transformer metering - versions and costs?

Hello everyone,

I am currently renovating an old warehouse (from the 80s) and setting up a small workshop + office for personal use. I am doing most of the work myself, except for essential things like utility connections for water / sewage / electricity. However, I do have some "knowledge."

Now I am facing the problem of the "new installation" of the power supply.

Background:
The old meter box was completely messed up, old, and overloaded [2 boxes approx. 200x600mm each || one with meter, one with circuit breakers]. There were already some failures (primary RCD kept tripping). So I had it disconnected and had a construction power distributor installed. I immediately commissioned the electrician to provide a quote for a new, large, future-proof cabinet.

Free-standing cabinet max. 2m high and max. 1.10m wide.
Should be able to handle 3x100A because of workshop / machines => Current transformer measurement is required.
Preliminary information was "Such a cabinet costs 2-3k€." *Phew* but what can you do.

Now an offer came in for just under 12k€ gross for a generously equipped current transformer cabinet (21xC32 rotary switches || 37xC16 rotary switches || 70x B16 single-pole 230V) with 3x160A current transformers including installation + connection, without final wiring of the outgoing feeders. Professionally assembled; brand "S+J."
The cabinet alone is supposed to cost 7k€ net wholesale. I don’t really know the electrician well, but he seems reasonable to me (I am an entrepreneur myself and have quite a good intuition by now... I dare to say. But I could be wrong!!).

Question:
Is something like this realistic? Or what alternatives are there for such a problem?
Reducing the circuit breakers, of course. Half of everything would suffice for me with a (later) subsequent sub-distribution...

Of course, I can google myself – and I already have. But then you only find some empty cabinets and mostly only 3x 63A. Above all, I am not sure if a smaller cabinet might also be sufficient.

Are there any well-founded opinions here from possibly professionals or people who have had something similar?

Thanks in advance + regards
Nicolai

PS: This whole thing is happening in the greater Karlsruhe area (BW). In case that is relevant…

For the design, the simultaneously required power is important. This must also be specified for the application for the connection. The simultaneity factor is also included. In other words, three people cannot work simultaneously with several machines. Therefore, the number of sockets is a secondary matter. So it should be clear what is to be connected, operated, or produced at all.

Hello,

unfortunately, I don't understand the "answer."

As described, it should be designed for 3x160A ausgelegt (for now, I will only have the contract upgraded to 3x100A with the utility company; that is sufficient for the time being. They were already on site and looked at the incoming line). The costs to the supplier for the upgrade are not meant here either. They occur anyway.

According to my understanding, the allowable total power results from the above-mentioned specification, or not?

Regards Nicolai