Relay Fuse Holder for 3D Printer

cults3d

I made this as better fused protection that came with my Tronxy motherboard. Also is a mounting for Automotive relays up to 200A. Though the standard blade fuse holders only go up to 40A. If you use automotive relays make sure that you use the "continuous" type, otherwise they will run hot. For wiring. I would suggest something like 4mm (8swg) for the Heat bed (relay). And a 1.5mm (16swg) cable for everything else. There are also two additional 6mm finger terminals (or 6mm speaker terminals). For things like led strips or fans with fused protection. I have shown these made out of M6*30mm nozzle throats with thumb nuts. You will also need two washers and three half nuts for each terminal. There are two smaller holes on the front for mounting to a 2020 aluminium profile, with two slightly larger holes opposite for a screwdriver so that it is easy to fix/remove.