Enclosure for Digital Temperature Controller

thingiverse

Enclosure for Digital Temperature Controller ===================================================== This is an enclosure specifically designed to house one of those highly affordable digital temperature control units sourced from China through online platforms like Amazon and eBay. These devices typically sell for around 20 Euro and are very effective in controlling either heating or cooling units. WARNING: Main voltage can be deadly! Attempt this project only if you have a solid understanding of what you're doing! Please note that I am not a trained electrician, so the instructions below may be incorrect or potentially hazardous. Here is where you will find my Solidworks part files: https://github.com/KaiserSoft/3D-Printing Instructions Required Components: 1 cheap Chinese digital temperature controller 1 2.5mm² terminal block strip with six terminals 220V cable 1 fuse tailored to the load; I used a 3A fuse in this example 5 M3x20mm screws for securing the lid 3 2mm self-tapping screws for securing the terminal strip 2 3mm or larger zip ties for securing mains lines 1 2mm zip tie for securing the temperature wire Build Instructions: Caution: Different versions of the digital temperature controller exist. Some units feature distinct outputs while others require a 12V supply to operate. Always verify the manual included with your unit for accurate wiring instructions. For this example, I am utilizing the model MH1230A, which can connect directly to mains power and control loads of up to 30 amps. To build, print Lower V2.STL and Lid.STL using a layer thickness of 0.25mm, an infill density of 20% honeycomb, a single outer shell, and two additional layers for the top and bottom, with the heated bed enabled. Next, configure the unit according to your device's unique wiring diagram. To prevent any cables from being ripped out, secure incoming power cords on the inside using zip ties. Warning: This enclosure is equipped to disconnect whatever is connected to terminal 1. Be cautious, as this can cause the output pin of your attached load to become live unless it uses a keyed outlet. In my region (Germany), outlets are not key-switched, so I marked the phase location on the plug and used a phase detector before connecting the unit to verify the electrical configuration.