screw-terminalwiring
I have a robot using the following screw terminal :
On the input side 2x 8 awg wires coming from the battery, on the other side 2 x 3 wires for 2 motor drivers and 1 step-down that power a single board computer.
There should be like 45A as peak here, and I would like to improve safety on that.
So what "professional" solution exists and which one are usually used to achieve the same thing in consumer products ?
A Punchdown block would do nicely.
None of those wires seem high gauged, and some look like they were puled out of cat 5 anyway.
Other names for these are 110 Blocks, 66 Blocks, M-Blocks. They are used for telephone, voice (Cat 3) and data (cat 5/6) wiring. Also used in alarm system wiring.
You could make an adapter board which would have
I haven't seen screw terminal with the right pitch to mate with (or replace) your female 2x20 connector. I doubt that such screw terminal connector exists.
Best Answer
In consumer products, this is achieved with wire-to-wire connectors. You usually buy the connector housing and the contacts separately, and the contacts needs to be crimped to the wire. You can crimp several wires to the same contact to achieve the fan-out you need (to achieve parallel connection, as you call it). Just look at the power supply distribution inside a PC, that's how it is made (with the "molex Y cables"). Take all the wires that should go together, twist them, and crimp them in the same contact. Note that you must always be careful about the min/max AWG size specs of the contact.
Here are a few links to different manufacturers. There is a lot of choice, but for currents such as 45A, there is not many models left actually. You can use multiple pins in parallel to share the current, however.
You can find much more with Google.
Note that you usually need to buy specific tools for crimping the contacts (you can do it with pliers, but then, safety - which seems important to you - will not be guaranteed). But crimping tools cost an arm and a leg. For a DIY project, I'm not sure it is worth it. If I were you, I'd actually just use some heat shrink sleeving around the terminal, after making sure it is very tightly screwed.