I designed this for mains wiring up a 3D printer under the hood. The Voron SW uses 2 power supplys, and needs some wiring to be done. I could have used blades, and made a wire harness, but I wanted something I could easily take apart to service. I could have used wire nuts, but they sort of suck. I settles on Wago 222-413 connector blocks. This part is designed to hold 3 of them for the ground, common, and neutral wires from mains wiring.
It is designed with the Voron Swithwire in mind, but it should work on any frame with enough clearance for the Wago connectors and the wires.
Wago connectors snap into place, and are held quite firmly. You can remove them, but it take a bit of force.
Print in ABS or PETG at 40% infill; PLA will work too, but this is most likely going to be under your heated bed with your electronics, making ABS the correct choice.