Product review (1 stars): Didn't Survive Even One Oven Cleaning Cycle
The OEM part was a 3/4 inch snap disc that opens at 130C to protect the Kitchenaid oven while this part, the Clinac CS-7, is a 1/2 inch snap disc unit that opens at 150C. Unfortunately, our oven is rated for 4.8KW  which requires 20A at 240VAC while the Clinac CS-7 is only rated at 7A though it should last a long time if it only activates during a clean cycle. A few months ago our oven failed. It actually turned out to be a bad cooling blower that allowed the temperature to rise too high and trip the thermal cutout. The repair guy replaced the old unit with a CS-7 bearing the correct part number and installed a new cooling fan. The first time my wife ran the cleaning cycle yesterday the CS-7 failed. Since they say it is a replacement for the 4452223, the original OEM part number, I'm giving it a one star since the original OEM part lasted 13+ years and probably over 25 cleaning cycles.

After talking to my repair guy I'm looking for a different part to use in my oven. According to him he has a lot of clients with the same problem on KitchenAid, Whirlpool and Dacor ovens. These units fail during the cleaning cycle and have to be replaced before the oven will heat again.

Update 3/27/18: I think I have found another part that will perform better than this part in my oven. I found it on Amazon for $5.99 and I bought the last two (hopefully more coming in soon). It is the Emerson 3L01-300 Snap Disc Limit Control. It opens up at 300F (149C) and self resets when the temperature drops to 250F (121C). I don't know if Emerson is the manufacturer or not since the label on it shows it's a Thermodisc 60T11. It's rated for 100,000 cycles at 25A and 240VAC with a resistive load like in an oven. The benefit of the self resetting feature is that it will automatically turn the circuit back on after the space behind my oven cools to 250F so I won't have to pull the oven out, remove the back panel and either manually reset the unit or replace it. Since it was half the price of the other units available I purchased two of them. This is not a surface mount type unit so I will use 3/8in standoffs under the mounting flange to just bring it in contact with the surface being monitored. Since it automatically resets, and thus is subject to wear over time, I'm going to mount two 3L01-300s in series. One of them will likely have a slightly lower turn-off temperature and thus do the switching, if it ever gets hot enough to turn off, so that unit will take the wear and tear. If it ever welds the contacts together then the second unit will still act as a fail safe. I'm pretty comfortable with the 3L01-300s since it is the same design (different mount though) that was in my oven originally. It was also made by Thermodisc and was a model 60F24, a one-shot 130C turnoff that had to be replaced if it ever tripped. I'm not an appliance repair guy so I can't guarantee anything but I thought I would share this info since so many people have problems with the aftermarket units tripping during the cleaning cycle.