I am half way through my Electrical Engineering program and have only just started to learn about AC circuits and inductive loads but I did a little reading and went off to try a simple project on my on. A company I work for wanted a switch to turn off their large refrigerator for certain periods of time. Most countdown timers you can buy will turn something ON for the set amount of time. I needed something that turned OFF for a set amount of time and ON the rest of the time. I created a timed switch using easy to obtain components: A Normally Closed SSR (SNC-R2025-511) Specs An off the shelf timed switch (Sylvania SA 160) Specs The Refrigerator I can't get much info on the Sylvania part other than the 120VAC, 20A rating for inductive and resistive loads and the fact that it is a SPST device. I assume its just essentially another SSR. Included are two circuit diagrams of my box and of the refrigerator and one picture of the actual device. Sorry if they are messy and/or incorrect. Anyway I put the timer and SSR into a box with a male and female plug. I made two of these for two different refrigerators. One a smaller 6A, 120VAC, 60Hz and the other a 9.6A, 120VAC, 60Hz model. They both work fine on the smaller fridge and other small appliances.However, on the larger fridge they will work for a little while and then something (perhaps the SSR) continuously cycles on and off. It will remain on for 15 seconds or less then off briefly then on again. The relay and the box are warm but I wouldn't say hot and the refrigerator is well within the acceptable load range of the device. Is there something I am missing here. Is there some kind of blowback voltage from the refrigerators inductive load causing the issue? Do I need to isolate the timer or install a protection circuit? Is it just heat? I know I must be overlooking something really simply hahaha, any help would be appreciated. Also sorry if the formatting of my question is incorrect this is only my second time posting here.