Mounting block for a switched power inlet*. The tabs on either side of the inlet need to be pressed out to the side before inserting power cord. You may need to mirror the part or flip the switch around to orient the switch the way you want (the switch portion can be removed and rotated).
You may want to use insulated 0.187" female spade connectors [22-16 gauge*] [14-16 gauge*] to wire the switch.
The power inlets don't come with a fuse, you'll probably want a 250V 5mmx20mm fast blow fuse* if you're using it with a 3d printer. The current rating (in amps) will depend on the printer.
Check out this post if you need help with wiring or fuse selection.
Filaments: (full list can be found on thrinter.com)
-- Hatchbox Transparent Black ABS
*affiliate links
Fuse_Switch_Mount_v1-1.STEP | 170.8KB | |
Fuse_Switch_Mount_v1-1.STL | 398.1KB |