Review on Hilitchi Circuit Temperature Thermal Assortment by Chris Lemm

Thermal fuses are a great idea and they seem to prevent many accidents and fires, but in reality they just prevent people from using the same coffee maker for more than a year or two. Partly it's a stupid design. You know that coffee is around 70-80°C and you know that the heater needs to be around 100°C to boil the water and pour it into the ground coffee. So why do I keep finding thermal fuses in coffee machines that blow at 120°C? And why have I never seen a coffee maker with a broken thermostat? Thermal fuses always fail! I recently bought a fog machine with the same problem. After a few hours of use it stopped working. When I took it apart, I found a warning sign that said "Caution! The nozzle works at a temperature of 250 degrees Celsius!”. and a 250 degree thermal fuse! Indeed, if something works well at a certain temperature, the thermal fuse should be set to a temperature above normal. It's easy, isn't it? I'm not advocating improving things like fuses unless you know what you're doing (I'm an electrical engineer and that's my coffee maker and my house!). but I also don't want to lie to you and tell you that all the products we develop are perfect or that the fuses are always chosen right from the start. Put the fogger or coffee maker in a place where there is no risk of fire, make sure it works properly and fight for your right to get it repaired! By the way: You may already know this, but don't solder it. Solder joints can fail in high temperature environments even if you don't damage the fuse during the soldering process. Always spot weld or use crimp terminals or cable lugs.