Cheap power distribution board. I updated this file. The positive symbol is extruded through the body making it easier to see. You will need to use support on the top. I found the board on eBay and designed the case around it. I will be using it for LED lights and fans in my enclosure. You will need M3 screws and nuts for mounting. Having an assortment is a good thing to have around. You would need to mount the base and PCB board first. Then screw on the cover (Optional). At this point, you are ready to attach the wires.
Power Distribution Board (Affiliate Link)