Hi everyone,
Can we use a safety switch connected on the remote on-off bridge of a Quattro/ Multi ?
I know there's an assistant for that but it's hard to use in big three-phases system:

And it cannot be used on BMS controlled batteries:

Why not wiring it this way:

This way, all the Master remote on-off could be parallelized. Am I missing something about the electrical safety rules ?
Best regards